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29f44cdac9 |
@@ -165,6 +165,7 @@
|
||||
"loadbalancer",
|
||||
"loadrestrictions",
|
||||
"logfmt",
|
||||
"lxnl",
|
||||
"mattn",
|
||||
"mccutchen",
|
||||
"metav",
|
||||
|
||||
@@ -1,32 +0,0 @@
|
||||
```mermaid
|
||||
---
|
||||
title: Rendering Overview
|
||||
---
|
||||
graph LR
|
||||
Platform[<a href="/docs/api/author/v1alpha4/#Platform">Platform</a>]
|
||||
Component[<a href="/docs/api/author/v1alpha4/#ComponentConfig">Components</a>]
|
||||
|
||||
Helm[<a href="/docs/api/author/v1alpha4/#Helm">Helm</a>]
|
||||
Kustomize[<a href="/docs/api/author/v1alpha4/#Kustomize">Kustomize</a>]
|
||||
Kubernetes[<a href="/docs/api/author/v1alpha4/#Kubernetes">Kubernetes</a>]
|
||||
|
||||
BuildPlan[<a href="/docs/api/core/v1alpha4/#buildplan">BuildPlan</a>]
|
||||
|
||||
ResourcesArtifact[<a href="/docs/api/core/v1alpha4/#artifact">Resources<br/>Artifact</a>]
|
||||
GitOpsArtifact[<a href="/docs/api/core/v1alpha4/#artifact">GitOps<br/>Artifact</a>]
|
||||
|
||||
Generators[<a href="/docs/api/core/v1alpha4/#generators">Generators</a>]
|
||||
Transformers[<a href="/docs/api/core/v1alpha4/#transformer">Transformers</a>]
|
||||
Validators[Validators<br/>TBD]
|
||||
Files[Manifest<br/>Files]
|
||||
|
||||
Platform --> Component
|
||||
Component --> Helm --> BuildPlan
|
||||
Component --> Kubernetes --> BuildPlan
|
||||
Component --> Kustomize --> BuildPlan
|
||||
|
||||
BuildPlan --> ResourcesArtifact --> Generators
|
||||
BuildPlan --> GitOpsArtifact --> Generators
|
||||
|
||||
Generators --> Transformers --> Validators --> Files
|
||||
```
|
||||
@@ -1,14 +1,17 @@
|
||||
---
|
||||
description: Get Support for Holos
|
||||
slug: /support
|
||||
sidebar_position: 900
|
||||
slug: support
|
||||
sidebar_position: 2000
|
||||
---
|
||||
|
||||
# Support
|
||||
|
||||
## Community Support
|
||||
|
||||
You can ask questions in our community forums in [GitHub Discussions](https://github.com/holos-run/holos/discussions), [Discord](https://discord.gg/JgDVbNpye7), or [Google Groups](https://groups.google.com/g/holos-discuss).
|
||||
You can ask questions in our community forums in [GitHub
|
||||
Discussions](https://github.com/holos-run/holos/discussions),
|
||||
[Discord](https://discord.gg/JgDVbNpye7), or [Google
|
||||
Groups](https://groups.google.com/g/holos-discuss).
|
||||
|
||||
## Commercial Support and Services
|
||||
|
||||
18
doc/md/topics/architecture.mdx
Normal file
@@ -0,0 +1,18 @@
|
||||
---
|
||||
description: Architecture diagrams.
|
||||
slug: architecture
|
||||
sidebar_position: 90
|
||||
---
|
||||
|
||||
import RenderPlatformDiagram from '@site/src/diagrams/render-platform-sequence.mdx';
|
||||
import RenderComponentDiagram from '@site/src/diagrams/render-component-sequence.mdx';
|
||||
|
||||
# Architecture
|
||||
|
||||
## Platform Rendering Sequence
|
||||
|
||||
<RenderPlatformDiagram />
|
||||
|
||||
## Component Rendering Sequence
|
||||
|
||||
<RenderComponentDiagram />
|
||||
@@ -16,8 +16,7 @@ have a standard Kubernetes API server with proper DNS and TLS certificates.
|
||||
You'll be able to easily reset the cluster to a known good state to iterate on
|
||||
your own Platform.
|
||||
|
||||
The [Concepts](/docs/concepts) page defines capitalized terms such as Platform
|
||||
and Component.
|
||||
The [Glossary] page defines capitalized terms such as Platform and Component.
|
||||
|
||||
## Reset the Cluster
|
||||
|
||||
@@ -105,7 +104,7 @@ You're back to the same state as the first time you completed this guide.
|
||||
|
||||
You'll need the following tools installed to complete this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the platform.
|
||||
1. [holos](../tutorial/setup.mdx) - to build the platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos components that wrap upstream Helm charts.
|
||||
3. [k3d](https://k3d.io/#installation) - to provide a k8s api server.
|
||||
4. [OrbStack](https://docs.orbstack.dev/install) or [Docker](https://docs.docker.com/get-docker/) - to use k3d.
|
||||
@@ -274,4 +273,7 @@ k3d cluster delete workload
|
||||
## Next Steps
|
||||
|
||||
Now that you have a real cluster, apply and explore the manifests Holos renders
|
||||
in the [Quickstart](/docs/quickstart) guide.
|
||||
in the [Tutorial].
|
||||
|
||||
[Glossary]: ../glossary.mdx
|
||||
[Tutorial]: ../tutorial.mdx
|
||||
|
||||
@@ -1,14 +0,0 @@
|
||||
---
|
||||
slug: file-generator
|
||||
title: File Generator
|
||||
description: Provide plain files to the Kustomize transformer.
|
||||
sidebar_position: 51
|
||||
---
|
||||
|
||||
# File Generator
|
||||
|
||||
Key points to cover:
|
||||
|
||||
1. The file generator loads plain files.
|
||||
2. Can be used to pass-through a plain file.
|
||||
3. Can be used as an input to a transformer.
|
||||
@@ -7,39 +7,40 @@ sidebar_position: 30
|
||||
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
import RenderingOverview from '../diagrams/rendering-overview.mdx';
|
||||
import PlatformSequence from '../diagrams/render-platform-sequence.mdx';
|
||||
import ComponentSequence from '../diagrams/render-component-sequence.mdx';
|
||||
import RenderingOverview from '@site/src/diagrams/rendering-overview.mdx';
|
||||
import PlatformSequence from '@site/src/diagrams/render-platform-sequence.mdx';
|
||||
import ComponentSequence from '@site/src/diagrams/render-component-sequence.mdx';
|
||||
|
||||
# Hello Holos
|
||||
|
||||
One of the first exercises you perform when learning a new programming language
|
||||
is to print out the "Hello World!" greeting. For Holos, our "Hello Holos"
|
||||
exercise involves modeling the [podinfo Helm chart][podinfo] that produces a
|
||||
similar greeting message from a Kubernetes Pod.
|
||||
## Overview
|
||||
|
||||
By the end of this tutorial you will gain the understanding of how to model
|
||||
an individual Holos Component using a Helm chart as its source.
|
||||
One of the first exercises we do when learning a new programming language is
|
||||
printing out a "Hello World!" greeting. Hello Holos configures the [podinfo Helm
|
||||
chart][podinfo] producing a similar greeting from a Kubernetes Service.
|
||||
|
||||
By the end of this tutorial you have an understanding of how to wrap a Helm
|
||||
Chart as a Holos Component.
|
||||
|
||||
## The Code
|
||||
|
||||
### Generate a Platform
|
||||
### Generating the structure
|
||||
|
||||
Use `holos` to generate a minimal platform directory structure. First, create
|
||||
and cd into a blank directory. Then use the `holos generate platform` command to
|
||||
and cd into a blank directory. Then use the `holos init platform` command to
|
||||
generate a minimal platform.
|
||||
|
||||
```shell
|
||||
mkdir holos-tutorial
|
||||
cd holos-tutorial
|
||||
holos generate platform v1alpha5
|
||||
holos init platform v1alpha5
|
||||
```
|
||||
|
||||
Holos creates a `platform` directory containing a `platform.gen.cue` file. This
|
||||
file is the entry point for your new platform configuration. You'll integrate
|
||||
components into the platform using the CUE code in this `platform` directory.
|
||||
|
||||
### Create a Component
|
||||
### Creating a component
|
||||
|
||||
Start by creating a directory for the `podinfo` component. Create an empty file
|
||||
and then add the following CUE configuration to it.
|
||||
@@ -70,7 +71,7 @@ HelmChart: #Helm & {
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Integrate the Component
|
||||
### Integrating the component
|
||||
|
||||
Integrate the `podinfo` component by creating a new file in the `platform`
|
||||
directory with the following CUE code:
|
||||
@@ -91,7 +92,7 @@ Platform: Components: podinfo: {
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Render the Manifests
|
||||
## Rendering manifests
|
||||
|
||||
Render a manifest for `podinfo` using the `holos render platform ./platform`
|
||||
command.
|
||||
@@ -109,7 +110,7 @@ rendered podinfo in 1.938665041s
|
||||
rendered platform in 1.938759417s
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="manifest" label="Manifest Data">
|
||||
<TabItem value="manifest" label="Rendered Manifest">
|
||||
```txt
|
||||
deploy/components/podinfo/podinfo.gen.yaml
|
||||
```
|
||||
@@ -237,13 +238,50 @@ executing `helm template` after caching `podinfo` locally.
|
||||
|
||||
Here’s a quick review of the files we created and their purpose:
|
||||
|
||||
| File | Purpose |
|
||||
| - | - |
|
||||
| `components/podinfo/podinfo.cue` | Configures the `podinfo` Helm chart as a holos component. |
|
||||
| `platform/podinfo.cue` | Adds the `podinfo` Helm chart to the list of Components that will be rendered by Holos. |
|
||||
```text
|
||||
holos-tutorial/
|
||||
├── components/
|
||||
│ └── podinfo/
|
||||
│ └── podinfo.cue
|
||||
├── cue.mod/
|
||||
├── platform/
|
||||
│ ├── platform.gen.cue
|
||||
│ └── podinfo.cue
|
||||
├── resources.cue
|
||||
├── schema.cue
|
||||
└── tags.cue
|
||||
```
|
||||
|
||||
We run `holos render platform` against the `platform` directory because that
|
||||
directory exports a [Platform] resource to `holos`.
|
||||
#### `components/podinfo/podinfo.cue`
|
||||
|
||||
Configures the `podinfo` Helm chart as a holos component.
|
||||
|
||||
#### `cue.mod`
|
||||
|
||||
[CUE Module] directory containing schema definitions for Kubernetes resources.
|
||||
|
||||
#### `platform/platform.gen.cue`
|
||||
|
||||
Exports the [Platform] spec from CUE to `holos` for processing.
|
||||
|
||||
#### `platform/podinfo.cue`
|
||||
|
||||
Integrates the `podinfo` Helm component into the platform.
|
||||
|
||||
#### `resources.cue`
|
||||
|
||||
Defines the `#Resources` schema of common Kubernetes resources.
|
||||
|
||||
#### `schema.cue`
|
||||
|
||||
Configures the `#Helm`, `#Kustomize`, and `#Kubernetes` common component kinds
|
||||
by composing the `#ComponentConfig` schema definition into each schema
|
||||
definition. The component kinds behave consistently as a result.
|
||||
|
||||
#### `tags.cue`
|
||||
|
||||
Holds parameter values passed from `holos render platform` to `holos render
|
||||
component` injected via [CUE Tags].
|
||||
|
||||
<Tabs groupId="67C1EE71-3EA8-4568-9F6D-0072BA09FF12">
|
||||
<TabItem value="overview" label="Rendering Overview">
|
||||
@@ -258,10 +296,18 @@ directory exports a [Platform] resource to `holos`.
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
We run `holos render platform` against the `platform` directory because that
|
||||
directory exports a [Platform] resource to `holos`. The platform directory is
|
||||
effectively the entrypoint into the rendering process.
|
||||
|
||||
Components are the building blocks for a Platform, and without them `holos
|
||||
render platform` does nothing. The `platform/podinfo.cue` file registers the
|
||||
`podinfo` Component with the Platform, and provides the path to the directory
|
||||
where the Component's CUE files are located.
|
||||
render platform` does nothing. The `platform/podinfo.cue` file integrates the
|
||||
`podinfo` Component with the Platform.
|
||||
|
||||
Holos requires two things to integrate a component with the platform.
|
||||
|
||||
1. A unique name for the component.
|
||||
2. The component filesystem path.
|
||||
|
||||
:::important
|
||||
Components can be parameterized.
|
||||
@@ -304,10 +350,12 @@ is the only Component, we're done!
|
||||
## Next Steps
|
||||
|
||||
We've shown how to add a single Helm chart to the Platform, but what if you have
|
||||
more than one Helm chart and they all need to access the same data? Check
|
||||
out the [Helm Generator] tutorial to learn more.
|
||||
more than one Helm chart and they all need to access the same data? Continue on
|
||||
with the next tutorial to learn how Holos makes it easy to pass data to multiple
|
||||
components and Helm Charts.
|
||||
|
||||
[podinfo]: https://github.com/stefanprodan/podinfo
|
||||
[Helm Generator]: ./helm-generator.mdx
|
||||
[CUE Module]: https://cuelang.org/docs/reference/modules/
|
||||
[CUE Tags]: https://cuelang.org/docs/howto/inject-value-into-evaluation-using-tag-attribute/
|
||||
[Platform]: ../api/author.md#Platform
|
||||
[Component Parameters]: ../topics/component-parameters.mdx
|
||||
|
||||
@@ -1,13 +0,0 @@
|
||||
---
|
||||
slug: helm-generator
|
||||
title: Helm Generator
|
||||
description: Generate manifests from existing Helm Charts
|
||||
sidebar_position: 40
|
||||
---
|
||||
|
||||
# Helm
|
||||
|
||||
Key points to cover:
|
||||
|
||||
1. Holos makes it easy to define data once and pass it to multiple charts.
|
||||
2. Work through the Prometheus and Blackbox example from the v1alpha4 Helm Guide.
|
||||
518
doc/md/tutorial/helm-values.mdx
Normal file
@@ -0,0 +1,518 @@
|
||||
---
|
||||
slug: helm-values
|
||||
title: Helm Values
|
||||
description: Holos provides values to multiple charts easily and safely.
|
||||
sidebar_position: 40
|
||||
---
|
||||
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
|
||||
<head>
|
||||
<meta property="og:title" content="Helm Values | Holos" />
|
||||
<meta property="og:image" content="https://holos.run/img/cards/guides-helm-2.png" />
|
||||
</head>
|
||||
|
||||
# Helm Values
|
||||
|
||||
## Overview
|
||||
|
||||
Holos makes it easier to integrate multiple Helm charts together. Holos adds
|
||||
valuable capabilities to Helm and Kustomize.
|
||||
|
||||
1. Inject the same value into two or more charts to integrate them safer than Helm alone.
|
||||
2. Add strong type checking and validation of constraints for Helm input values.
|
||||
3. Implementation of the [rendered manifests pattern].
|
||||
|
||||
We'll manage the [prometheus] and [blackbox] Helm Charts in this tutorial.
|
||||
Unfortunately, the upstream `values.yaml` files are misconfigured by default.
|
||||
Prometheus tries to connect to Blackbox at the wrong host and port.
|
||||
|
||||
:::tip
|
||||
Holos and CUE makes it easy to fix this problem by integrating them correctly.
|
||||
The integrated charts will stay in lock step over time.
|
||||
:::
|
||||
|
||||
## The Code
|
||||
|
||||
### Generating the structure
|
||||
|
||||
Use `holos` to generate a minimal platform directory structure. First, create
|
||||
and cd into a blank directory. Then use the `holos init platform` command.
|
||||
|
||||
```shell
|
||||
mkdir holos-helm-values-tutorial
|
||||
cd holos-helm-values-tutorial
|
||||
holos init platform v1alpha5
|
||||
```
|
||||
|
||||
Make a commit to track changes.
|
||||
|
||||
```bash
|
||||
git init . && git add . && git commit -m initial
|
||||
```
|
||||
|
||||
### Managing the Components
|
||||
|
||||
Create the `prometheus` and `blackbox` component directories, then add each of
|
||||
the following file contents.
|
||||
|
||||
```bash
|
||||
mkdir -p components/prometheus components/blackbox
|
||||
touch components/prometheus/prometheus.cue
|
||||
touch components/blackbox/blackbox.cue
|
||||
```
|
||||
|
||||
<Tabs groupId="D15A3008-1EFC-4D34-BED1-15BC0C736CC3">
|
||||
<TabItem value="prometheus.cue" label="prometheus.cue">
|
||||
```txt
|
||||
components/prometheus/prometheus.cue
|
||||
```
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Produce a helm chart build plan.
|
||||
holos: Helm.BuildPlan
|
||||
|
||||
Helm: #Helm & {
|
||||
Chart: {
|
||||
name: "prometheus"
|
||||
version: "25.27.0"
|
||||
repository: {
|
||||
name: "prometheus-community"
|
||||
url: "https://prometheus-community.github.io/helm-charts"
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="blackbox.cue" label="blackbox.cue">
|
||||
```txt
|
||||
components/blackbox/blackbox.cue
|
||||
```
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Produce a helm chart build plan.
|
||||
holos: Helm.BuildPlan
|
||||
|
||||
Helm: #Helm & {
|
||||
Chart: {
|
||||
name: "prometheus-blackbox-exporter"
|
||||
version: "9.0.1"
|
||||
repository: {
|
||||
name: "prometheus-community"
|
||||
url: "https://prometheus-community.github.io/helm-charts"
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Integrating the Components
|
||||
|
||||
Integrate the components with the platform by adding the following file to the
|
||||
platform directory.
|
||||
|
||||
```bash
|
||||
touch platform/prometheus.cue
|
||||
```
|
||||
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
Platform: Components: {
|
||||
prometheus: {
|
||||
name: "prometheus"
|
||||
path: "components/prometheus"
|
||||
}
|
||||
blackbox: {
|
||||
name: "blackbox"
|
||||
path: "components/blackbox"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Render the platform.
|
||||
|
||||
<Tabs groupId="33D6BFED-62D8-4A42-A26A-F3121D57C4E5">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
cached prometheus-blackbox-exporter 9.0.1
|
||||
rendered blackbox in 3.825430417s
|
||||
cached prometheus 25.27.0
|
||||
rendered prometheus in 4.840089667s
|
||||
rendered platform in 4.840137792s
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Commit the results.
|
||||
|
||||
<Tabs groupId="446CC550-A634-45C0-BEC7-992E5C56D4FA">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add . && git commit -m 'add blackbox and prometheus'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main b5df111] add blackbox and prometheus
|
||||
5 files changed, 1550 insertions(+)
|
||||
create mode 100644 components/blackbox/blackbox.cue
|
||||
create mode 100644 components/prometheus/prometheus.cue
|
||||
create mode 100644 deploy/components/blackbox/blackbox.gen.yaml
|
||||
create mode 100644 deploy/components/prometheus/prometheus.gen.yaml
|
||||
create mode 100644 platform/prometheus.cue
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Importing Helm Values
|
||||
|
||||
Holos renders the helm charts with their default values. We can import these
|
||||
default values into CUE so we can easily work with them as structured data
|
||||
instead of text markup.
|
||||
|
||||
```bash
|
||||
holos cue import \
|
||||
--package holos \
|
||||
--path 'Helm: Values:' \
|
||||
--outfile components/prometheus/values.cue \
|
||||
components/prometheus/vendor/25.27.0/prometheus/values.yaml
|
||||
```
|
||||
|
||||
```bash
|
||||
holos cue import \
|
||||
--package holos \
|
||||
--path 'Helm: Values:' \
|
||||
--outfile components/blackbox/values.cue \
|
||||
components/blackbox/vendor/9.0.1/prometheus-blackbox-exporter/values.yaml
|
||||
```
|
||||
|
||||
These command convert the YAML data into CUE code and nest the values under the
|
||||
`Values` field of the `Holos` struct.
|
||||
|
||||
:::important
|
||||
CUE unifies `values.cue` with the other `*.cue` files in the same directory.
|
||||
:::
|
||||
|
||||
Render the platform and commit the results.
|
||||
|
||||
<Tabs groupId="BDDCD65A-2E9D-4BA6-AAE2-8099494D5E4B">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered blackbox in 365.936792ms
|
||||
rendered prometheus in 371.855875ms
|
||||
rendered platform in 372.109916ms
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
<Tabs groupId="1636C619-258E-4D49-8052-F64B588C9177">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add . && git commit -m 'import values'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main 52e90ea] import values
|
||||
2 files changed, 1815 insertions(+)
|
||||
create mode 100644 components/blackbox/values.cue
|
||||
create mode 100644 components/prometheus/values.cue
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Managing Common Configuration
|
||||
|
||||
Define a structure to hold the configuration values we want both helm charts to
|
||||
use. We add this configuration to the `components` directory so it's in scope
|
||||
for all components.
|
||||
|
||||
```bash
|
||||
touch components/blackbox.cue
|
||||
```
|
||||
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Schema Definition
|
||||
#Blackbox: {
|
||||
// host constrained to a lower case dns label
|
||||
host: string & =~"^[a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?$"
|
||||
// port constrained to a valid range
|
||||
port: int & >0 & <=65535
|
||||
}
|
||||
|
||||
// Concrete values must validate against the schema.
|
||||
Blackbox: #Blackbox & {
|
||||
host: "blackbox"
|
||||
port: 9115
|
||||
}
|
||||
```
|
||||
|
||||
:::important
|
||||
1. CUE loads and unifies all `*.cue` files from the root directory containing
|
||||
`cue.mod` to the leaf component path directory.
|
||||
2. CUE validates types _and_ constraints. Validation with CUE is better than
|
||||
languages with only type checking.
|
||||
:::
|
||||
|
||||
Add and commit the configuration.
|
||||
|
||||
<Tabs groupId="A738CCE4-F0C6-4CC7-BE1F-2B92F0E86FDC">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add . && git commit -m 'add blackbox configuration'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main 1adcd08] add blackbox configuration
|
||||
1 file changed, 15 insertions(+)
|
||||
create mode 100644 components/blackbox.cue
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Referring to Common Configuration
|
||||
|
||||
Referencing common configuration from multiple components is easy and safe with
|
||||
Holos and CUE.
|
||||
|
||||
Patch the two `values.cue` files, or edit them by hand, to reference
|
||||
`Blackbox.host` and `Blackbox.port`.
|
||||
|
||||
<Tabs groupId="5FFCE892-B8D4-4F5B-B2E2-39EC9E9F87A4">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
patch -p1 < values.patch
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="patch" label="values.patch">
|
||||
```diff
|
||||
--- a/components/blackbox/values.cue
|
||||
+++ b/components/blackbox/values.cue
|
||||
@@ -1,6 +1,8 @@
|
||||
package holos
|
||||
|
||||
Helm: Values: {
|
||||
+ fullnameOverride: Blackbox.host
|
||||
+
|
||||
global: {
|
||||
//# Global image registry to use if it needs to be overriden for some specific use cases (e.g local registries, custom images, ...)
|
||||
//#
|
||||
@@ -192,7 +194,7 @@ Helm: Values: {
|
||||
annotations: {}
|
||||
labels: {}
|
||||
type: "ClusterIP"
|
||||
- port: 9115
|
||||
+ port: Blackbox.port
|
||||
ipDualStack: {
|
||||
enabled: false
|
||||
ipFamilies: ["IPv6", "IPv4"]
|
||||
--- a/components/prometheus/values.cue
|
||||
+++ b/components/prometheus/values.cue
|
||||
@@ -1083,7 +1083,7 @@ Helm: Values: {
|
||||
target_label: "__param_target"
|
||||
}, {
|
||||
target_label: "__address__"
|
||||
- replacement: "blackbox"
|
||||
+ replacement: "\(Blackbox.host):\(Blackbox.port)"
|
||||
}, {
|
||||
source_labels: ["__param_target"]
|
||||
target_label: "instance"
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
patching file 'components/blackbox/values.cue'
|
||||
patching file 'components/prometheus/values.cue'
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
:::important
|
||||
Both charts now use the same values in lock step. Holos and CUE integrate them
|
||||
safely and easily.
|
||||
:::
|
||||
|
||||
Remove the patch file, then commit the changes.
|
||||
|
||||
<Tabs groupId="6498B00E-FADA-4EB2-885C-808F1D22E04D">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
rm values.patch
|
||||
```
|
||||
```bash
|
||||
git add . && git commit -m 'integrate blackbox and prometheus together'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main 4221803] integrate blackbox and prometheus together
|
||||
2 files changed, 4 insertions(+), 2 deletions(-)
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Reviewing Changes
|
||||
|
||||
Holos makes it easy to see and review platform wide changes. Render the
|
||||
platform to see how both prometheus and blackbox change in lock step.
|
||||
|
||||
<Tabs groupId="E7F6D8B1-22FA-4075-9B44-D9F2815FE0D3">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered blackbox in 374.810666ms
|
||||
rendered prometheus in 382.899334ms
|
||||
rendered platform in 383.270625ms
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Changes are easily visible with version control.
|
||||
|
||||
<Tabs groupId="9789A0EF-24D4-4FB9-978A-3895C2778789">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git diff
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```diff
|
||||
diff --git a/deploy/components/blackbox/blackbox.gen.yaml b/deploy/components/blackbox/blackbox.gen.yaml
|
||||
index 3db20cd..5336f44 100644
|
||||
--- a/deploy/components/blackbox/blackbox.gen.yaml
|
||||
+++ b/deploy/components/blackbox/blackbox.gen.yaml
|
||||
@@ -7,7 +7,7 @@ metadata:
|
||||
app.kubernetes.io/name: prometheus-blackbox-exporter
|
||||
app.kubernetes.io/version: v0.25.0
|
||||
helm.sh/chart: prometheus-blackbox-exporter-9.0.1
|
||||
- name: prometheus-blackbox-exporter
|
||||
+ name: blackbox
|
||||
namespace: default
|
||||
---
|
||||
apiVersion: v1
|
||||
@@ -31,7 +31,7 @@ metadata:
|
||||
app.kubernetes.io/name: prometheus-blackbox-exporter
|
||||
app.kubernetes.io/version: v0.25.0
|
||||
helm.sh/chart: prometheus-blackbox-exporter-9.0.1
|
||||
- name: prometheus-blackbox-exporter
|
||||
+ name: blackbox
|
||||
namespace: default
|
||||
---
|
||||
apiVersion: v1
|
||||
@@ -43,7 +43,7 @@ metadata:
|
||||
app.kubernetes.io/name: prometheus-blackbox-exporter
|
||||
app.kubernetes.io/version: v0.25.0
|
||||
helm.sh/chart: prometheus-blackbox-exporter-9.0.1
|
||||
- name: prometheus-blackbox-exporter
|
||||
+ name: blackbox
|
||||
namespace: default
|
||||
spec:
|
||||
ports:
|
||||
@@ -65,7 +65,7 @@ metadata:
|
||||
app.kubernetes.io/name: prometheus-blackbox-exporter
|
||||
app.kubernetes.io/version: v0.25.0
|
||||
helm.sh/chart: prometheus-blackbox-exporter-9.0.1
|
||||
- name: prometheus-blackbox-exporter
|
||||
+ name: blackbox
|
||||
namespace: default
|
||||
spec:
|
||||
replicas: 1
|
||||
@@ -119,8 +119,8 @@ spec:
|
||||
name: config
|
||||
hostNetwork: false
|
||||
restartPolicy: Always
|
||||
- serviceAccountName: prometheus-blackbox-exporter
|
||||
+ serviceAccountName: blackbox
|
||||
volumes:
|
||||
- configMap:
|
||||
- name: prometheus-blackbox-exporter
|
||||
+ name: blackbox
|
||||
name: config
|
||||
diff --git a/deploy/components/prometheus/prometheus.gen.yaml b/deploy/components/prometheus/prometheus.gen.yaml
|
||||
index 9e02bce..ab638f0 100644
|
||||
--- a/deploy/components/prometheus/prometheus.gen.yaml
|
||||
+++ b/deploy/components/prometheus/prometheus.gen.yaml
|
||||
@@ -589,7 +589,7 @@ data:
|
||||
- source_labels:
|
||||
- __address__
|
||||
target_label: __param_target
|
||||
- - replacement: blackbox
|
||||
+ - replacement: blackbox:9115
|
||||
target_label: __address__
|
||||
- source_labels:
|
||||
- __param_target
|
||||
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
From the diff we know this change will:
|
||||
|
||||
1. Reconfigure the blackbox exporter host from `prometheus-blackbox-exporter` to `blackbox`.
|
||||
2. Have no effect on the blackbox service port. It was already using the default 9115.
|
||||
3. Reconfigure prometheus to query the blackbox exporter at the correct host and
|
||||
port, `blackbox:9115`.
|
||||
|
||||
Without this change prometheus incorrectly assumed blackbox was listening at
|
||||
`blackbox` on port `80` when it was actually listening at
|
||||
`prometheus-blackbox-exporter` port `9115`. Going forward, changing the
|
||||
blackbox host or port will reconfigure both charts correctly.
|
||||
|
||||
Commit the changes and move on to deploying them.
|
||||
|
||||
<Tabs groupId="F8C9A98D-DE1E-4EF6-92C1-017A9166F6C7">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add . && git commit -m 'render integrated blackbox and prometheus manifests'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main 67efe0d] render integrated blackbox and prometheus manifests
|
||||
2 files changed, 7 insertions(+), 7 deletions(-)
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Trying Locally
|
||||
|
||||
Optionally apply the manifests Holos rendered to a [Local Cluster].
|
||||
|
||||
## Next Steps
|
||||
|
||||
In this tutorial we learned how Holos makes it easier to holistically integrate
|
||||
the [prometheus] and [blackbox] charts so they're configured in lock step with
|
||||
each other. If we relied on Helm alone, there is no good way to configure both
|
||||
charts to use the same service endpoint.
|
||||
|
||||
[rendered manifests pattern]: https://akuity.io/blog/the-rendered-manifests-pattern
|
||||
[prometheus]: https://github.com/prometheus-community/helm-charts/tree/prometheus-25.27.0/charts/prometheus
|
||||
[blackbox]: https://github.com/prometheus-community/helm-charts/tree/prometheus-blackbox-exporter-9.0.1/charts/prometheus-blackbox-exporter
|
||||
[httpbin]: https://github.com/mccutchen/go-httpbin/tree/v2.15.0
|
||||
|
||||
[Config Schema]: #config-schema
|
||||
|
||||
[Technical Overview]: ./overview.mdx
|
||||
[Local Cluster]: ../topics/local-cluster.mdx
|
||||
@@ -1,10 +0,0 @@
|
||||
---
|
||||
slug: kustomize-transformer
|
||||
title: Kustomize Transformer
|
||||
description: Holos makes it easy to Kustomize a Helm chart.
|
||||
sidebar_position: 60
|
||||
---
|
||||
|
||||
# Helm Kustomization
|
||||
|
||||
Introduce Kustomization transformer.
|
||||
398
doc/md/tutorial/kustomize.mdx
Normal file
@@ -0,0 +1,398 @@
|
||||
---
|
||||
slug: kustomize
|
||||
title: Kustomize
|
||||
description: Holos makes it easy to Kustomize configuration.
|
||||
sidebar_position: 45
|
||||
---
|
||||
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
|
||||
# Kustomize
|
||||
|
||||
## Overview
|
||||
|
||||
In the previous tutorial we learned how Holos makes it easier to holistically
|
||||
integrate the [prometheus] and [blackbox] charts so they're configured in lock
|
||||
step with each other.
|
||||
|
||||
This tutorial goes further by integrating the [httpbin] service with prometheus
|
||||
and blackbox to automatically probe for availability.
|
||||
|
||||
We'll explore how Holos manages [kustomize] bases similar to the Helm kind
|
||||
covered in the [Helm Values] tutorial.
|
||||
|
||||
## The Code
|
||||
|
||||
### Generating the structure
|
||||
|
||||
<Tabs>
|
||||
<TabItem value="optional" label="Optional">
|
||||
:::note Skip this step if you completed the [Helm Values] tutorial.
|
||||
|
||||
Otherwise click the **Generate** tab to generate a blank platform now.
|
||||
:::
|
||||
</TabItem>
|
||||
<TabItem value="generate" label="Generate">
|
||||
Use `holos` to generate a minimal platform directory structure. First, create
|
||||
and cd into a blank directory. Then use the `holos init platform` command.
|
||||
|
||||
```shell
|
||||
mkdir holos-kustomize-tutorial
|
||||
cd holos-kustomize-tutorial
|
||||
holos init platform v1alpha5
|
||||
```
|
||||
|
||||
Make a commit to track changes.
|
||||
|
||||
```bash
|
||||
git init . && git add . && git commit -m initial
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Managing the Component
|
||||
|
||||
Create the `httpbin` component directory and add the `httpbin.cue` and
|
||||
`httpbin.yaml` files to it.
|
||||
|
||||
<Tabs groupId="800C3AE7-E7F8-4AFC-ABF1-6AFECD945958">
|
||||
<TabItem value="setup" label="Setup">
|
||||
```bash
|
||||
mkdir -p components/httpbin
|
||||
touch components/httpbin/httpbin.cue
|
||||
touch components/httpbin/httpbin.yaml
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="components/httpbin/httpbin.cue" label="httpbin.cue">
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Produce a Kustomize BuildPlan for Holos
|
||||
holos: Kustomize.BuildPlan
|
||||
|
||||
// https://github.com/mccutchen/go-httpbin/blob/v2.15.0/kustomize/README.md
|
||||
Kustomize: #Kustomize & {
|
||||
KustomizeConfig: {
|
||||
// Files tells Holos to copy the file from the component path to the
|
||||
// temporary directory Holos uses for BuildPlan execution.
|
||||
Files: {
|
||||
"httpbin.yaml": _
|
||||
}
|
||||
CommonLabels: {
|
||||
"app.kubernetes.io/name": "httpbin"
|
||||
}
|
||||
// Kustomization represents a kustomization.yaml file in CUE. Holos
|
||||
// marshals this field into a `kustomization.yaml` while processing a
|
||||
// BuildPlan. See
|
||||
// https://kubectl.docs.kubernetes.io/references/kustomize/kustomization/
|
||||
Kustomization: {
|
||||
images: [{name: "mccutchen/go-httpbin"}]
|
||||
// Use a hidden field to compose patches easily with a struct. Hidden
|
||||
// fields are not included in exported structures.
|
||||
_patches: {}
|
||||
// Convert the hidden struct to a list.
|
||||
patches: [for x in _patches {x}]
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="components/httpbin/httpbin.yaml" label="httpbin.yaml">
|
||||
```yaml showLineNumbers
|
||||
# https://github.com/mccutchen/go-httpbin/blob/v2.15.0/kustomize/resources.yaml
|
||||
apiVersion: apps/v1
|
||||
kind: Deployment
|
||||
metadata:
|
||||
name: httpbin
|
||||
spec:
|
||||
template:
|
||||
spec:
|
||||
containers:
|
||||
- name: httpbin
|
||||
image: mccutchen/go-httpbin
|
||||
ports:
|
||||
- name: http
|
||||
containerPort: 8080
|
||||
protocol: TCP
|
||||
livenessProbe:
|
||||
httpGet:
|
||||
path: /status/200
|
||||
port: http
|
||||
readinessProbe:
|
||||
httpGet:
|
||||
path: /status/200
|
||||
port: http
|
||||
resources: {}
|
||||
---
|
||||
apiVersion: v1
|
||||
kind: Service
|
||||
metadata:
|
||||
name: httpbin
|
||||
spec:
|
||||
ports:
|
||||
- port: 80
|
||||
targetPort: http
|
||||
protocol: TCP
|
||||
name: http
|
||||
appProtocol: http
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Holos knows the `httpbin.yaml` file is part of the BuildPlan because of the
|
||||
`KustomizeConfig: Files: "httpbin.yaml": _` line in the `httpbin.cue`.
|
||||
|
||||
### Integrating the Components
|
||||
|
||||
Integrate `httpbin` with the platform by adding the following file to the
|
||||
platform directory.
|
||||
|
||||
```bash
|
||||
touch platform/httpbin.cue
|
||||
```
|
||||
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
Platform: Components: {
|
||||
httpbin: {
|
||||
name: "httpbin"
|
||||
path: "components/httpbin"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Render the platform.
|
||||
|
||||
<Tabs groupId="B120D5D1-0EAB-41E0-AD21-15526EBDD53D">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered httpbin in 707.554666ms
|
||||
rendered platform in 707.9845ms
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Commit the results.
|
||||
|
||||
<Tabs groupId="446CC550-A634-45C0-BEC7-992E5C56D4FA">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add . && git commit -m 'add httpbin'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main c05f9ef] add httpbin
|
||||
4 files changed, 118 insertions(+)
|
||||
create mode 100644 components/httpbin/httpbin.cue
|
||||
create mode 100644 components/httpbin/httpbin.yaml
|
||||
create mode 100644 deploy/components/httpbin/httpbin.gen.yaml
|
||||
create mode 100644 platform/httpbin.cue
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Inspecting the BuildPlan
|
||||
|
||||
We can see the [BuildPlan] exported to `holos` by the `holos:
|
||||
Kustomize.BuildPlan` line in `httpbin.cue`. Holos processes this build plan to
|
||||
produce the fully rendered manifests.
|
||||
|
||||
<Tabs groupId="DD697D65-5BEC-4B92-BB33-59BE4FEC112F">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos cue export --expression holos --out=yaml ./components/httpbin
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```yaml showLineNumbers
|
||||
kind: BuildPlan
|
||||
apiVersion: v1alpha5
|
||||
metadata:
|
||||
name: no-name
|
||||
spec:
|
||||
artifacts:
|
||||
- artifact: components/no-name/no-name.gen.yaml
|
||||
generators:
|
||||
- kind: Resources
|
||||
output: resources.gen.yaml
|
||||
resources: {}
|
||||
- kind: File
|
||||
output: httpbin.yaml
|
||||
file:
|
||||
source: httpbin.yaml
|
||||
transformers:
|
||||
- kind: Kustomize
|
||||
inputs:
|
||||
- resources.gen.yaml
|
||||
- httpbin.yaml
|
||||
output: components/no-name/no-name.gen.yaml
|
||||
kustomize:
|
||||
kustomization:
|
||||
labels:
|
||||
- includeSelectors: false
|
||||
pairs:
|
||||
app.kubernetes.io/name: httpbin
|
||||
patches: []
|
||||
images:
|
||||
- name: mccutchen/go-httpbin
|
||||
resources:
|
||||
- resources.gen.yaml
|
||||
- httpbin.yaml
|
||||
kind: Kustomization
|
||||
apiVersion: kustomize.config.k8s.io/v1beta1
|
||||
source:
|
||||
component:
|
||||
name: no-name
|
||||
path: no-path
|
||||
parameters: {}
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Transforming manifests
|
||||
|
||||
Reviewing the BuildPlan exported in the previous command:
|
||||
|
||||
1. The [File Generator] copies the plain `httpbin.yaml` file into the build.
|
||||
2. The [Kustomize Transformer] uses `httpbin.yaml` as an input resource.
|
||||
3. The final artifact is the output from Kustomize.
|
||||
|
||||
This BuildPlan transforms the raw yaml by labeling all of the resources with
|
||||
`"app.kubernetes.io/name": "httpbin"` using the [KustomizeConfig] `CommonLabels`
|
||||
field. We still need to integrate `httpbin` with `prometheus`. Annotate the
|
||||
Service with `prometheus.io/probe: "true"` to complete the integration. Holos
|
||||
makes this easier with CUE. We don't need to edit any yaml files.
|
||||
|
||||
Add a new `patches.cue` file to the `httpbin` component with the following
|
||||
content.
|
||||
|
||||
<Tabs groupId="104D40FD-ED59-4F66-8B91-435436084743">
|
||||
<TabItem value="touch" label="touch">
|
||||
```bash
|
||||
touch components/httpbin/patches.cue
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="patches.cue" label="patches.cue">
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
import "encoding/yaml"
|
||||
|
||||
// Mix in a Kustomize patch to the configuration.
|
||||
Kustomize: KustomizeConfig: Kustomization: _patches: {
|
||||
probe: {
|
||||
target: kind: "Service"
|
||||
target: name: "httpbin"
|
||||
patch: yaml.Marshal([{
|
||||
op: "add"
|
||||
path: "/metadata/annotations/prometheus.io~1probe"
|
||||
value: "true"
|
||||
}])
|
||||
}
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
:::note
|
||||
We use a hidden `_patches` field to easily unify data into a struct, then
|
||||
convert the struct into a list for export.
|
||||
:::
|
||||
|
||||
## Reviewing Changes
|
||||
|
||||
Render the platform to see the result of the kustomization patch.
|
||||
|
||||
<Tabs groupId="5D1812DD-8E7B-4F97-B349-275214F38B6E">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered httpbin in 197.030208ms
|
||||
rendered platform in 197.416416ms
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Holos is configuring Kustomize to patch the plain `httpbin.yaml` file with the
|
||||
annotation.
|
||||
|
||||
<Tabs groupId="3D80279E-8EDE-4B3E-9269-50F5D1C1CA42">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git diff
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```diff
|
||||
diff --git a/deploy/components/httpbin/httpbin.gen.yaml b/deploy/components/httpbin/httpbin.gen.yaml
|
||||
index 298b9a8..a16bd1a 100644
|
||||
--- a/deploy/components/httpbin/httpbin.gen.yaml
|
||||
+++ b/deploy/components/httpbin/httpbin.gen.yaml
|
||||
@@ -1,6 +1,8 @@
|
||||
apiVersion: v1
|
||||
kind: Service
|
||||
metadata:
|
||||
+ annotations:
|
||||
+ prometheus.io/probe: "true"
|
||||
labels:
|
||||
app.kubernetes.io/name: httpbin
|
||||
name: httpbin
|
||||
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Add and commit the final changes.
|
||||
|
||||
<Tabs groupId="54C335C8-B382-4277-AE87-0D6556921955">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add . && git commit -m 'annotate httpbin for prometheus probes'
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main 6eeeadb] annotate httpbin for prometheus probes
|
||||
2 files changed, 3 insertions(+), 1 deletion(-)
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Trying Locally
|
||||
|
||||
Optionally apply the manifests Holos rendered to a [Local Cluster].
|
||||
|
||||
## Next Steps
|
||||
|
||||
We learned how Holos makes it easier to manage [httpbin], distributed as a
|
||||
Kustomize base, using a kustomize Component similar to the helm component we saw
|
||||
previously. Holos offers a clear way to kustomize any component, patching an
|
||||
annotation onto the `httpbin` Service in this example.
|
||||
|
||||
Continue on with the tutorial to explore how Holos makes it easier to manage
|
||||
certificates and make services accessible outside of a cluster.
|
||||
|
||||
[httpbin]: https://github.com/mccutchen/go-httpbin/tree/v2.15.0
|
||||
[prometheus]: https://github.com/prometheus-community/helm-charts/tree/prometheus-25.27.0/charts/prometheus
|
||||
[blackbox]: https://github.com/prometheus-community/helm-charts/tree/prometheus-blackbox-exporter-9.0.1/charts/prometheus-blackbox-exporter
|
||||
[kustomize]: https://kubectl.docs.kubernetes.io/references/kustomize/kustomization/
|
||||
|
||||
[Helm Values]: ./helm-values.mdx
|
||||
[File Generator]: ../api/core.md#File
|
||||
[Kustomize Transformer]: ../api/core.md#Kustomize
|
||||
[BuildPlan]: ../api/core.md#BuildPlan
|
||||
[KustomizeConfig]: ../api/author.md#KustomizeConfig
|
||||
[Local Cluster]: ../topics/local-cluster.mdx
|
||||
@@ -5,12 +5,12 @@ description: Learn how Holos integrates software into a holistic platform.
|
||||
sidebar_position: 10
|
||||
---
|
||||
|
||||
import RenderingOverview from '../diagrams/rendering-overview.mdx';
|
||||
import RenderPlatformDiagram from '../diagrams/render-platform-sequence.mdx';
|
||||
import RenderComponentDiagram from '../diagrams/render-component-sequence.mdx';
|
||||
import RenderingOverview from '@site/src/diagrams/rendering-overview.mdx';
|
||||
|
||||
# Tutorial
|
||||
|
||||
## Overview
|
||||
|
||||
Holos is a configuration management tool for Kubernetes resources. It provides
|
||||
the building blocks needed for implementing the [rendered manifests pattern].
|
||||
It gives the flexibility to manage a wide range of configurations, from large
|
||||
@@ -27,27 +27,19 @@ At a high level, Holos provides a few major components:
|
||||
|
||||
<RenderingOverview />
|
||||
|
||||
{/* TODO: Replace this with the Advantages diagram we talked about. */}
|
||||
|
||||
## Holos' role in your organization
|
||||
|
||||
Platform engineers run the `holos render platform` command locally and in CI to
|
||||
produce Kubernetes manifests which are committed to version control. GitOps
|
||||
tools like ArgoCD or Flux deploy the manifests produced by Holos.
|
||||
|
||||
Other tools focus on individual applications. Holos focuses holistically on the
|
||||
integration of applications into a whole platform. In this way a single one
|
||||
line configuration change, like changing the domain name, is clearly visible
|
||||
across the whole platform.
|
||||
|
||||
Rendering a platform may produce a single ConfigMap resource or produce millions
|
||||
of lines of fully rendered manifests configuring multiple environments,
|
||||
clusters, and regions.
|
||||
|
||||
<RenderPlatformDiagram />
|
||||
Holos works well with your existing Helm charts, kustomize bases, and any other
|
||||
configuration data you currently store in version control.
|
||||
|
||||
## Advantages of Holos
|
||||
|
||||
This section outlines some advantages of Holos.
|
||||
|
||||
### Safe
|
||||
|
||||
Holos uses [CUE] to provide strong typing and constraints to configuration data.
|
||||
@@ -60,11 +52,6 @@ Holos offers a consistent way to incorporate a wide variety of tools into a well
|
||||
defined data pipeline. Configuration produced from CUE, Helm, and Kustomize are
|
||||
all handled with the same consistent process.
|
||||
|
||||
### Easy
|
||||
|
||||
Holos makes it easy to define configuration data once, then safely use the data
|
||||
in multiple Helm charts, Kustomize bases, or any other supported component kind.
|
||||
|
||||
### Flexible
|
||||
|
||||
Holos is designed to be flexible. Holos offers flexible building blocks for
|
||||
@@ -76,40 +63,6 @@ For example, environments and clusters are explicitly kept out of the core and
|
||||
instead are provided as flexible, user-customizable [topics] organized as a
|
||||
recipes.
|
||||
|
||||
<RenderComponentDiagram />
|
||||
|
||||
## When not to use Holos
|
||||
|
||||
Holos is useful for many organizations but there are situations where Holos is
|
||||
not a good fit.
|
||||
|
||||
### Implicit GitOps
|
||||
|
||||
Holos takes an explicit view of GitOps, meaning the fully rendered manifests are
|
||||
complete. These manifests are stored in version control without an implicit
|
||||
dependency on external systems. If your team uses an implicit approach, meaning
|
||||
some configuration comes from elsewhere, then Holos may not be a good fit.
|
||||
|
||||
For example, if container image tags are managed by a system outside of version
|
||||
control then holos may not be a good fit.
|
||||
|
||||
Holos is a good fit if you're open to integrate external systems with Holos such
|
||||
that the external data becomes an input to produce the fully rendered manifests.
|
||||
|
||||
### CUE is a Non Starter
|
||||
|
||||
Holos heavily uses CUE. For example, when using Holos with Helm and Kustomize,
|
||||
we no longer need to write YAML files and text templates. All configuration is
|
||||
expressed in CUE and `holos` handles the YAML on our behalf.
|
||||
|
||||
CUE is a relatively simple domain specific language, but it is very different
|
||||
from most other languages because of it's roots in logic programming languages.
|
||||
|
||||
Holos is not a good fit if your team prefers to write code in YAML templates or
|
||||
turing complete general purpose languages.
|
||||
|
||||
For more info see [Why CUE for Configuration].
|
||||
|
||||
## Getting Help
|
||||
|
||||
If you get stuck, you can get help on [Discord] or [GitHub discussions]. Don't
|
||||
|
||||
@@ -1,11 +1,11 @@
|
||||
---
|
||||
slug: Custom Schemas
|
||||
title: Custom Schemas
|
||||
slug: schema-definitions
|
||||
title: Schema Definitions
|
||||
description: Define your own custom data structures.
|
||||
sidebar_position: 70
|
||||
---
|
||||
|
||||
# Custom Schemas
|
||||
# Schema Definitions
|
||||
|
||||
- Work through defining a `#Cluster` schema and a `Clusters` struct.
|
||||
- Direct the reader to [topics] for more recipes.
|
||||
@@ -7,107 +7,39 @@ sidebar_position: 20
|
||||
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
import RenderPlatformDiagram from '../diagrams/render-platform-sequence.mdx';
|
||||
import RenderPlatformDiagram from '@site/src/diagrams/render-platform-sequence.mdx';
|
||||
|
||||
# Setup
|
||||
|
||||
## Overview
|
||||
|
||||
This tutorial will guide you through the installation of Holos and its
|
||||
dependencies, as well as the initialization of a minimal Platform that you can
|
||||
extend to meet your specific needs.
|
||||
|
||||
## Prerequisites
|
||||
## Installing Holos
|
||||
|
||||
Holos integrates with the following tools that should be installed to enable
|
||||
their functionality.
|
||||
|
||||
* [Helm] to fetch and render Helm chart Components [Kubectl] to [kustomize]
|
||||
* components.
|
||||
|
||||
## Install Holos
|
||||
|
||||
Holos is distributed as a single file executable that can be installed in a couple of ways.
|
||||
Holos is distributed as a single file executable that can be installed in a
|
||||
couple of ways.
|
||||
|
||||
### Releases
|
||||
|
||||
Download `holos` from the [releases] page and place the executable into your
|
||||
shell path.
|
||||
|
||||
### Go install
|
||||
|
||||
Alternatively, install directly into your go bin path using:
|
||||
### Go Install
|
||||
|
||||
```shell
|
||||
go install github.com/holos-run/holos/cmd/holos@latest
|
||||
```
|
||||
|
||||
## Generate a new Platform
|
||||
### Dependencies
|
||||
|
||||
Use `holos` to generate a minimal platform using the recommended directory
|
||||
structure. First, create and cd into a blank directory. Then use the `holos
|
||||
generate platform` command to generate a minimal platform.
|
||||
|
||||
```shell
|
||||
mkdir holos-tutorial
|
||||
cd holos-tutorial
|
||||
holos generate platform v1alpha5
|
||||
```
|
||||
|
||||
Holos creates a `platform` directory containing a `platform.gen.cue` file
|
||||
serving as the entry point for your new platform configuration. You'll register
|
||||
software components with the platform using the CUE code in this `platform`
|
||||
directory.
|
||||
|
||||
## Render the Platform
|
||||
|
||||
We usually make configuration changes with holos in the following loop:
|
||||
|
||||
1. Edit some CUE code.
|
||||
2. Render the whole platform.
|
||||
3. Review the fully rendered manifests.
|
||||
4. Repeat
|
||||
|
||||
Rendering the platform to plain manifest files allows us to see the changes
|
||||
clearly.
|
||||
|
||||
<Tabs groupId="66379FE3-206D-4DF1-BAF0-29C9A6C17D00">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered platform in 8.292µs
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="diagram" label="Diagram">
|
||||
<RenderPlatformDiagram />
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
In this initial state `holos` doesn't do anything because no components are
|
||||
registered with the platform. You can inspect the Platform definition to get
|
||||
this insight.
|
||||
|
||||
<Tabs groupId="218658D2-1305-46D3-8F55-8DA8EB45F114">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos cue export --expression holos --out=yaml ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```yaml
|
||||
kind: Platform
|
||||
apiVersion: v1alpha5
|
||||
metadata:
|
||||
name: default
|
||||
spec:
|
||||
components: []
|
||||
```
|
||||
Note the `spec.components` field is empty.
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
Holos integrates with the following tools that should be installed to enable
|
||||
their functionality.
|
||||
|
||||
- [Helm] to fetch and render Helm chart Components.
|
||||
- [Kubectl] to [kustomize] components.
|
||||
|
||||
## Next Steps
|
||||
|
||||
@@ -115,21 +47,6 @@ You've got the structure of your platform configuration in place. Continue on to
|
||||
[Hello Holos] where you'll learn how easy it is to manage a Helm chart with
|
||||
holos.
|
||||
|
||||
## Do I need Kubernetes?
|
||||
|
||||
No. Holos generates fully rendered Kubernetes manifests but does not apply
|
||||
them. You don't need a Kubernetes cluster to start using Holos and reviewing
|
||||
the files it creates.
|
||||
|
||||
You will need a cluster to apply the rendered manifests and interact with the
|
||||
resources and services Holos configures. We recommend using our [Local Cluster]
|
||||
guide to set up a minimal [k3d] Kubernetes cluster with [OrbStack] or [Docker].
|
||||
You might like our [Local Cluster] guide because it:
|
||||
|
||||
1. Includes a script to quickly reset the cluster to a known good state.
|
||||
2. Configures proper DNS and TLS certificates.
|
||||
|
||||
|
||||
[Helm]: https://github.com/helm/helm/releases
|
||||
[Kubectl]: https://kubernetes.io/docs/tasks/tools/
|
||||
[kustomize]: https://kustomize.io/
|
||||
|
||||
@@ -7,6 +7,9 @@ image: /img/cards/announcing-holos.png
|
||||
description: Holistically manage Helm and Kustomize with CUE
|
||||
---
|
||||
|
||||
import RenderingOverview from '@site/src/diagrams/rendering-overview.mdx';
|
||||
import RenderPlatformDiagram from '@site/src/diagrams/render-platform-sequence.mdx';
|
||||
|
||||
<head>
|
||||
<title>Announcing Holos</title>
|
||||
<meta property="og:title" content="Announcing Holos" />
|
||||
@@ -21,39 +24,10 @@ manifests pattern as a data pipeline to fully render manifests generated from
|
||||
[Kustomize]: https://kustomize.io/
|
||||
[CUE]: https://cuelang.org/
|
||||
|
||||
```mermaid
|
||||
---
|
||||
title: Rendered Manifest Pipeline
|
||||
---
|
||||
graph LR
|
||||
Platform[<a href="/docs/api/author/v1alpha4/#Platform">Platform</a>]
|
||||
Component[<a href="/docs/api/author/v1alpha4/#ComponentConfig">Components</a>]
|
||||
<RenderingOverview />
|
||||
|
||||
Helm[<a href="/docs/api/author/v1alpha4/#Helm">Helm</a>]
|
||||
Kustomize[<a href="/docs/api/author/v1alpha4/#Kustomize">Kustomize</a>]
|
||||
Kubernetes[<a href="/docs/api/author/v1alpha4/#Kubernetes">Kubernetes</a>]
|
||||
{/* truncate */}
|
||||
|
||||
BuildPlan[<a href="/docs/api/core/v1alpha4/#buildplan">BuildPlan</a>]
|
||||
|
||||
ResourcesArtifact[<a href="/docs/api/core/v1alpha4/#artifact">Resources<br/>Artifact</a>]
|
||||
GitOpsArtifact[<a href="/docs/api/core/v1alpha4/#artifact">GitOps<br/>Artifact</a>]
|
||||
|
||||
Generators[<a href="/docs/api/core/v1alpha4/#generators">Generators</a>]
|
||||
Transformers[<a href="/docs/api/core/v1alpha4/#transformer">Transformers</a>]
|
||||
Files[Manifest<br/>Files]
|
||||
|
||||
Platform --> Component
|
||||
Component --> Helm --> BuildPlan
|
||||
Component --> Kubernetes --> BuildPlan
|
||||
Component --> Kustomize --> BuildPlan
|
||||
|
||||
BuildPlan --> ResourcesArtifact --> Generators
|
||||
BuildPlan --> GitOpsArtifact --> Generators
|
||||
|
||||
Generators --> Transformers --> Files
|
||||
```
|
||||
|
||||
<!-- truncate -->
|
||||
|
||||
At the start of the pandemic I was migrating our platform from VMs managed by
|
||||
Puppet to Kubernetes. My primary goal was to build an observability system
|
||||
@@ -85,6 +59,8 @@ a Go command line tool to implement the pattern as a data pipeline. I’d been
|
||||
thinking about the comments from the [Why are we templating YAML] posts and
|
||||
wondering what an answer to this question would look like.
|
||||
|
||||
<RenderPlatformDiagram />
|
||||
|
||||
The Go command line tool was an incremental improvement over the CI scripts, but
|
||||
we still didn’t have a good way to handle the data values. We were still
|
||||
templating YAML which didn’t catch errors early enough. It was too easy to
|
||||
@@ -101,22 +77,16 @@ Take a look at Holos if you’re looking to implement the rendered manifests
|
||||
pattern or can’t shake that feeling it should be easier to integrate third party
|
||||
software into Kubernetes like we felt.
|
||||
|
||||
1. [Helm Guide] Walks through how we solved the challenges we faced with the prometheus Helm charts.
|
||||
2. [Quickstart] Works through how a platform team can define golden paths for other teams using CUE.
|
||||
3. [Author API] provides an ergonomic way to work with Helm, Kustomize, and CUE resources.
|
||||
1. [Tutorial] takes a tour of Holos features starting from scratch.
|
||||
2. [Topics] cover how to customize and tailor Holos to your unique needs.
|
||||
|
||||
[Helm Guide]: /docs/guides/helm/
|
||||
[Guides]: /docs/guides/
|
||||
[API Reference]: /docs/api/
|
||||
[Quickstart]: /docs/quickstart/
|
||||
[Author API]: /docs/api/author/
|
||||
[Core API]: /docs/api/core/
|
||||
[Open Infrastructure Services]: https://openinfrastructure.co/
|
||||
[Why are we templating YAML]: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&query=https%3A%2F%2Fleebriggs.co.uk%2Fblog%2F2019%2F02%2F07%2Fwhy-are-we-templating-yaml&sort=byDate&type=story
|
||||
|
||||
[Holos]: https://holos.run/
|
||||
[Quickstart]: /docs/quickstart/
|
||||
[Tutorial]: /docs/v1alpha5/tutorial/overview/
|
||||
[Topics]: /docs/v1alpha5/topics/
|
||||
|
||||
[Holos]: https://holos.run/
|
||||
[Helm]: https://helm.sh/
|
||||
[Kustomize]: https://kustomize.io/
|
||||
[CUE]: https://cuelang.org/
|
||||
@@ -59,6 +59,14 @@ const config: Config = {
|
||||
showLastUpdateAuthor: true,
|
||||
showLastUpdateTime: true,
|
||||
sidebarPath: './sidebars.ts',
|
||||
// https://docusaurus.io/docs/versioning#configuring-versioning-behavior
|
||||
lastVersion: 'current',
|
||||
versions: {
|
||||
current: {
|
||||
label: 'v1alpha5',
|
||||
path: 'v1alpha5',
|
||||
}
|
||||
}
|
||||
},
|
||||
blog: {
|
||||
path: "blog",
|
||||
@@ -90,7 +98,7 @@ const config: Config = {
|
||||
}
|
||||
},
|
||||
navbar: {
|
||||
title: '',
|
||||
title: 'Holos',
|
||||
logo: {
|
||||
src: 'img/logo.svg',
|
||||
srcDark: 'img/logo-dark.svg',
|
||||
@@ -98,17 +106,9 @@ const config: Config = {
|
||||
items: [
|
||||
{
|
||||
type: 'doc',
|
||||
docId: 'guides/quickstart',
|
||||
position: 'left',
|
||||
label: 'Quickstart',
|
||||
},
|
||||
{ to: '/docs/technical-overview', label: 'Docs', position: 'left' },
|
||||
{ to: '/docs/guides', label: 'Guides', position: 'left' },
|
||||
{
|
||||
type: 'doc',
|
||||
docId: 'api',
|
||||
position: 'left',
|
||||
label: 'API',
|
||||
docId: 'tutorial/overview',
|
||||
label: 'Docs',
|
||||
position: 'left'
|
||||
},
|
||||
{ to: '/blog', label: 'Blog', position: 'left' },
|
||||
{
|
||||
@@ -121,71 +121,17 @@ const config: Config = {
|
||||
label: 'Discord',
|
||||
position: 'right',
|
||||
},
|
||||
{
|
||||
type: 'docsVersionDropdown',
|
||||
position: 'right',
|
||||
// dropdownItemsAfter: [{ to: '/versions', label: 'All versions' }],
|
||||
dropdownActiveClassDisabled: true,
|
||||
},
|
||||
],
|
||||
},
|
||||
footer: {
|
||||
style: 'dark',
|
||||
links: [
|
||||
{
|
||||
title: 'Docs',
|
||||
items: [
|
||||
{
|
||||
label: 'Quickstart',
|
||||
to: '/docs/quickstart',
|
||||
},
|
||||
{
|
||||
label: 'Concepts',
|
||||
to: '/docs/concepts',
|
||||
},
|
||||
{
|
||||
label: 'Documentation',
|
||||
to: '/docs',
|
||||
},
|
||||
{
|
||||
label: 'API Reference',
|
||||
to: '/docs/api',
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
title: 'Community',
|
||||
items: [
|
||||
{
|
||||
label: 'Support',
|
||||
href: '/docs/support',
|
||||
},
|
||||
{
|
||||
label: 'Discord',
|
||||
href: 'https://discord.gg/JgDVbNpye7',
|
||||
},
|
||||
{
|
||||
label: 'Discussion List',
|
||||
href: 'https://groups.google.com/g/holos-discuss',
|
||||
},
|
||||
{
|
||||
label: 'Discussion Forum',
|
||||
href: 'https://github.com/holos-run/holos/discussions',
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
title: 'More',
|
||||
items: [
|
||||
{
|
||||
label: 'Blog',
|
||||
to: '/blog',
|
||||
},
|
||||
{
|
||||
label: 'GitHub',
|
||||
href: 'https://github.com/holos-run/holos',
|
||||
},
|
||||
{
|
||||
label: 'GoDoc',
|
||||
href: 'https://pkg.go.dev/github.com/holos-run/holos?tab=doc',
|
||||
}
|
||||
],
|
||||
},
|
||||
],
|
||||
links: [],
|
||||
copyright: `Copyright © ${new Date().getFullYear()} The Holos Authors.`,
|
||||
},
|
||||
prism: {
|
||||
|
||||
@@ -15,14 +15,14 @@ const FeatureList: FeatureItem[] = [
|
||||
Svg: require('@site/static/img/base00/undraw_software_engineer_re_tnjc.svg').default,
|
||||
description: (
|
||||
<>
|
||||
<p align="left">
|
||||
<p style={{ textAlign: 'left' }}>
|
||||
<ul>
|
||||
<li>Provide simple definitions for other teams to use as golden paths.</li>
|
||||
<li>Define integrations in <a href="https://cuelang.org/">CUE</a> with strong type checking. No more text templates or bash scripts.</li>
|
||||
<li>Reuse your existing Helm charts and Kustomize bases.</li>
|
||||
</ul>
|
||||
</p>
|
||||
<a href="/docs/technical-overview">Learn More</a>
|
||||
<a href="/docs/v1alpha5/tutorial/overview/">Learn More</a>
|
||||
</>
|
||||
),
|
||||
},
|
||||
@@ -31,14 +31,14 @@ const FeatureList: FeatureItem[] = [
|
||||
Svg: require('@site/static/img/base00/undraw_through_the_park_lxnl.svg').default,
|
||||
description: (
|
||||
<>
|
||||
<p align="left">
|
||||
<p style={{ textAlign: 'left' }}>
|
||||
<ul>
|
||||
<li>Move faster using paved paths from your platform and security teams.</li>
|
||||
<li>Develop locally or in the cloud.</li>
|
||||
<li>Spend more time developing software and fewer cycles fighting infrastructure challenges.</li>
|
||||
</ul>
|
||||
</p>
|
||||
<a href="/docs/technical-overview">Learn More</a>
|
||||
<a href="/docs/v1alpha5/tutorial/overview/">Learn More</a>
|
||||
</>
|
||||
),
|
||||
},
|
||||
@@ -47,14 +47,14 @@ const FeatureList: FeatureItem[] = [
|
||||
Svg: require('@site/static/img/base00/undraw_security_on_re_e491.svg').default,
|
||||
description: (
|
||||
<>
|
||||
<p align="left">
|
||||
<p style={{ textAlign: 'left' }}>
|
||||
<ul>
|
||||
<li>Define security policy as reusable, typed configurations.</li>
|
||||
<li>Automatically enforce security policy on new projects.</li>
|
||||
<li>Ensure a consistent security posture cross-platform with fewer code changes.</li>
|
||||
</ul>
|
||||
</p>
|
||||
<a href="/docs/technical-overview">Learn More</a>
|
||||
<a href="/docs/v1alpha5/tutorial/overview/">Learn More</a>
|
||||
</>
|
||||
),
|
||||
}
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
```mermaid
|
||||
---
|
||||
title: holos render component
|
||||
title: holos render component sequence diagram
|
||||
---
|
||||
sequenceDiagram
|
||||
participant HRC as holos<br />render component
|
||||
@@ -1,6 +1,6 @@
|
||||
```mermaid
|
||||
---
|
||||
title: holos render platform
|
||||
title: holos render platform sequence diagram
|
||||
---
|
||||
sequenceDiagram
|
||||
participant HRP as holos<br />render platform
|
||||
32
doc/website/src/diagrams/rendering-overview.mdx
Normal file
@@ -0,0 +1,32 @@
|
||||
```mermaid
|
||||
---
|
||||
title: Rendering Overview
|
||||
---
|
||||
graph LR
|
||||
Platform[<a href="/docs/v1alpha5/api/author/#Platform">Platform</a>]
|
||||
Component[<a href="/docs/v1alpha5/api/author/#ComponentConfig">Components</a>]
|
||||
|
||||
Helm[<a href="/docs/v1alpha5/api/author/#Helm">Helm</a>]
|
||||
Kustomize[<a href="/docs/v1alpha5/api/author/#Kustomize">Kustomize</a>]
|
||||
Kubernetes[<a href="/docs/v1alpha5/api/author/#Kubernetes">Kubernetes</a>]
|
||||
|
||||
BuildPlan[<a href="/docs/v1alpha5/api/core/#BuildPlan">BuildPlan</a>]
|
||||
|
||||
ResourcesArtifact[<a href="/docs/v1alpha5/api/core/#Artifact">Resources<br/>Artifact</a>]
|
||||
GitOpsArtifact[<a href="/docs/v1alpha5/api/core/#Artifact">GitOps<br/>Artifact</a>]
|
||||
|
||||
Generators[<a href="/docs/v1alpha5/api/core/#Generator">Generators</a>]
|
||||
Transformers[<a href="/docs/v1alpha5/api/core/#Transformer">Transformers</a>]
|
||||
Validators[<a href="/docs/v1alpha5/api/core/#Transformer">Validators</a><br/>TBD]
|
||||
Files[Manifest<br/>Files]
|
||||
|
||||
Platform --> Component
|
||||
Component --> Helm --> BuildPlan
|
||||
Component --> Kubernetes --> BuildPlan
|
||||
Component --> Kustomize --> BuildPlan
|
||||
|
||||
BuildPlan --> ResourcesArtifact --> Generators
|
||||
BuildPlan --> GitOpsArtifact --> Generators
|
||||
|
||||
Generators --> Transformers --> Validators --> Files
|
||||
```
|
||||
@@ -23,17 +23,11 @@ function HomepageHeader() {
|
||||
<div className={styles.buttons}>
|
||||
<Link
|
||||
className="button button--secondary button--lg"
|
||||
to="docs/quickstart">
|
||||
Get Started
|
||||
</Link>
|
||||
<span className={styles.divider}></span>
|
||||
<Link
|
||||
className="button button--primary button--lg"
|
||||
to="docs/technical-overview/">
|
||||
to="docs/v1alpha5/tutorial/overview/">
|
||||
Learn More
|
||||
</Link>
|
||||
<span className={styles.divider}></span>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div >
|
||||
</header >
|
||||
|
||||
|
Before Width: | Height: | Size: 248 KiB After Width: | Height: | Size: 248 KiB |
|
Before Width: | Height: | Size: 206 KiB After Width: | Height: | Size: 206 KiB |
@@ -1,724 +0,0 @@
|
||||
---
|
||||
description: Try Holos with this quick start guide.
|
||||
slug: /archive/2024-09-15-quickstart
|
||||
sidebar_position: 100
|
||||
---
|
||||
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
import Admonition from '@theme/Admonition';
|
||||
|
||||
# Quickstart
|
||||
|
||||
In this guide, you'll experience how Holos makes the process of operating a
|
||||
Platform safer, easier, and more consistent. We'll use Holos to manage a
|
||||
vendor-provided Helm chart as a Component. Next, we'll mix in our own custom
|
||||
resources to manage the Component with GitOps. Finally, you'll see how Holos
|
||||
makes it safer and easier to maintain software over time by surfacing the exact
|
||||
changes that will be applied when upgrading the vendor's chart to a new version,
|
||||
before they are actually made.
|
||||
|
||||
The [Concepts](/docs/concepts) page defines capitalized terms such as Platform
|
||||
and Component.
|
||||
|
||||
## What you'll need {#requirements}
|
||||
|
||||
You'll need the following tools installed to complete this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the Platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos Components that
|
||||
wrap upstream Helm charts.
|
||||
|
||||
Optionally, if you'd like to apply the rendered manifests to a real Cluster,
|
||||
first complete the [Local Cluster Guide](/docs/guides/local-cluster).
|
||||
|
||||
## Install Holos
|
||||
|
||||
Install Holos with the following command or other methods listed on the
|
||||
[Installation](/docs/install/) page.
|
||||
|
||||
```bash
|
||||
go install github.com/holos-run/holos/cmd/holos@latest
|
||||
```
|
||||
|
||||
## Create a Git Repository
|
||||
|
||||
Start by initializing an empty Git repository. Holos operates on local files
|
||||
stored in a Git repository.
|
||||
|
||||
<Tabs groupId="init">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
mkdir holos-quickstart
|
||||
cd holos-quickstart
|
||||
git init
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
Initialized empty Git repository in /holos-quickstart/.git/
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
This guide assumes you will run commands from the root directory of the Git
|
||||
repository unless stated otherwise.
|
||||
|
||||
## Generate the Platform {#Generate-Platform}
|
||||
|
||||
Generate the Platform code in the repository root. A Platform refers to the
|
||||
entire set of software holistically integrated to provide a software development
|
||||
platform for your organization. In this guide, the Platform will include a
|
||||
single Component to demonstrate how the concepts fit together.
|
||||
|
||||
```bash
|
||||
holos generate platform quickstart
|
||||
```
|
||||
|
||||
Commit the generated platform config to the repository.
|
||||
|
||||
<Tabs groupId="commit-platform">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add .
|
||||
git commit -m "holos generate platform quickstart - $(holos --version)"
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main (root-commit) 0b17b7f] holos generate platform quickstart
|
||||
213 files changed, 72349 insertions(+)
|
||||
...
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Generate a Component {#generate-component}
|
||||
|
||||
The platform you generated is currently empty. Run the following command to
|
||||
generate the CUE code that defines a Helm Component.
|
||||
|
||||
<Tabs groupId="gen-podinfo">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos generate component podinfo --component-version 6.6.1
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
generated component
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
The --component-version 6.6.1 flag intentionally installs an older release.
|
||||
You'll see how Holos assists with software upgrades later in this guide.
|
||||
|
||||
The generate component command creates two files: a leaf file,
|
||||
`components/podinfo/podinfo.gen.cue`, and a root file, `podinfo.gen.cue`. Holos
|
||||
leverages the fact that [order is
|
||||
irrelevant](https://cuelang.org/docs/tour/basics/order-irrelevance/) in CUE to
|
||||
register the component with the Platform by adding a file to the root of the Git
|
||||
repository. The second file defines the component in the leaf component
|
||||
directory.
|
||||
|
||||
<Tabs groupId="podinfo-files">
|
||||
<TabItem value="components/podinfo/podinfo.gen.cue" label="Leaf">
|
||||
`components/podinfo/podinfo.gen.cue`
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Produce a helm chart build plan.
|
||||
(#Helm & Chart).Output
|
||||
|
||||
let Chart = {
|
||||
Name: "podinfo"
|
||||
Version: "6.6.1"
|
||||
Namespace: "default"
|
||||
|
||||
Repo: name: "podinfo"
|
||||
Repo: url: "https://stefanprodan.github.io/podinfo"
|
||||
|
||||
Values: {}
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="podinfo.gen.cue" label="Root">
|
||||
`podinfo.gen.cue`
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Manage podinfo on workload clusters only
|
||||
for Cluster in #Fleets.workload.clusters {
|
||||
#Platform: Components: "\(Cluster.name)/podinfo": {
|
||||
path: "components/podinfo"
|
||||
cluster: Cluster.name
|
||||
}
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
In this example, we provide the minimal information needed to manage the Helm
|
||||
chart: the name, version, Kubernetes namespace for deployment, and the chart
|
||||
repository location.
|
||||
|
||||
This chart deploys cleanly without any values provided, but we include an empty
|
||||
Values struct to show how Holos improves consistency and safety in Helm by
|
||||
leveraging the strong type-checking in CUE. You can safely pass shared values,
|
||||
such as the organization’s domain name, to all Components across all clusters in
|
||||
the Platform by defining them at the root of the configuration.
|
||||
|
||||
Commit the generated component config to the repository.
|
||||
|
||||
<Tabs groupId="commit-component">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add .
|
||||
git commit -m "holos generate component podinfo - $(holos --version)"
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main cc0e90c] holos generate component podinfo
|
||||
2 files changed, 24 insertions(+)
|
||||
create mode 100644 components/podinfo/podinfo.gen.cue
|
||||
create mode 100644 podinfo.gen.cue
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Render the Component
|
||||
|
||||
You can render individual components without adding them to a Platform, which is
|
||||
helpful when developing a new component.
|
||||
|
||||
<Tabs groupId="render-podinfo">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render component ./components/podinfo --cluster-name=default
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
cached
|
||||
rendered podinfo
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
First, the command caches the Helm chart locally to speed up subsequent
|
||||
renderings. Then, the command runs Helm to produce the output and writes it into
|
||||
the deploy directory.
|
||||
|
||||
<Tabs groupId="tree-podinfo">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
tree deploy
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
deploy
|
||||
└── clusters
|
||||
└── default
|
||||
└── components
|
||||
└── podinfo
|
||||
└── podinfo.gen.yaml
|
||||
|
||||
5 directories, 1 file
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
The component deploys to one cluster named `default`. In practice, the same
|
||||
component is often deployed to multiple clusters, such as `east` and `west` to
|
||||
provide redundancy and increase availability.
|
||||
|
||||
:::tip
|
||||
This example is equivalent to running `helm template` on the chart and saving
|
||||
the output to a file. Holos simplifies this task, making it safer and more
|
||||
consistent when managing many charts.
|
||||
:::
|
||||
|
||||
## Mix in an ArgoCD Application
|
||||
|
||||
We've seen how Holos works with Helm, but we haven't yet explored how Holos
|
||||
makes it easier to consistently and safely manage all of the software in a
|
||||
Platform.
|
||||
|
||||
Holos allows you to easily mix in resources that differentiate your Platform.
|
||||
We'll use this feature to mix in an ArgoCD [Application][application] to manage
|
||||
the podinfo Component with GitOps. We'll define this configuration in a way that
|
||||
can be automatically and consistently reused across all future Components added
|
||||
to the Platform.
|
||||
|
||||
Create a new file named `argocd.cue` in the root of your Git repository with the
|
||||
following contents:
|
||||
|
||||
<Tabs groupId="argocd-config">
|
||||
<TabItem value="command" label="argocd.cue">
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
#ArgoConfig: {
|
||||
Enabled: true
|
||||
RepoURL: "https://github.com/holos-run/holos-quickstart-guide"
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
:::tip
|
||||
If you plan to apply the rendered output to a real cluster, change the
|
||||
`example.com` RepoURL to the URL of the Git repository you created in this
|
||||
guide. You don't need to change the example if you're just exploring Holos by
|
||||
inspecting the rendered output without applying it to a live cluster.
|
||||
:::
|
||||
|
||||
With this file in place, render the component again.
|
||||
|
||||
<Tabs groupId="render-podinfo-argocd">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render component ./components/podinfo --cluster-name=default
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
wrote deploy file
|
||||
rendered gitops/podinfo
|
||||
rendered podinfo
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Holos uses the locally cached chart to improve performance and reliability. It
|
||||
then renders the Helm template output along with an ArgoCD Application resource
|
||||
for GitOps.
|
||||
|
||||
:::tip
|
||||
By defining the ArgoCD configuration at the root, we again take advantage of the
|
||||
fact that [order is
|
||||
irrelevant](https://cuelang.org/docs/tour/basics/order-irrelevance/) in CUE.
|
||||
:::
|
||||
|
||||
Defining the configuration at the root ensures all future leaf Components take
|
||||
the ArgoCD configuration and render an Application manifest for GitOps
|
||||
management.
|
||||
|
||||
<Tabs groupId="tree-podinfo-argocd">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
tree deploy
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
deploy
|
||||
└── clusters
|
||||
└── default
|
||||
├── components
|
||||
│ └── podinfo
|
||||
│ └── podinfo.gen.yaml
|
||||
└── gitops
|
||||
└── podinfo.application.gen.yaml
|
||||
|
||||
6 directories, 2 files
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Notice the new `podinfo.application.gen.yaml` file created by enabling ArgoCD in
|
||||
the Helm component. The Application resource in the file looks like this:
|
||||
|
||||
<Tabs groupId="podinfo-application">
|
||||
<TabItem value="file" label="podinfo.application.gen.yaml">
|
||||
```yaml showLineNumbers
|
||||
apiVersion: argoproj.io/v1alpha1
|
||||
kind: Application
|
||||
metadata:
|
||||
name: podinfo
|
||||
namespace: argocd
|
||||
spec:
|
||||
destination:
|
||||
server: https://kubernetes.default.svc
|
||||
project: default
|
||||
source:
|
||||
path: ./deploy/clusters/default/components/podinfo
|
||||
repoURL: https://example.com/holos-quickstart.git
|
||||
targetRevision: main
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
:::tip
|
||||
Holos generates a similar Application resource for every additional Component
|
||||
added to your Platform.
|
||||
:::
|
||||
|
||||
Finally, add and commit the results to your Platform's Git repository.
|
||||
|
||||
<Tabs groupId="commit-argo">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add .
|
||||
git commit -m "holos render component ./components/podinfo --cluster-name=default"
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main f95cef1] holos render component ./components/podinfo --cluster-name=default
|
||||
3 files changed, 134 insertions(+)
|
||||
create mode 100644 argocd.cue
|
||||
create mode 100644 deploy/clusters/default/components/podinfo/podinfo.gen.yaml
|
||||
create mode 100644 deploy/clusters/default/gitops/podinfo.application.gen.yaml
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
In this section, we learned how Holos simplifies mixing resources into
|
||||
Components, like an ArgoCD Application. Holos ensures consistency by managing an
|
||||
Application resource for every Component added to the Platform through the
|
||||
configuration you define in `argocd.cue` at the root of the repository.
|
||||
|
||||
## Define Workload Clusters {#workload-clusters}
|
||||
|
||||
We've generated a Component to manage podinfo and integrated it with our
|
||||
Platform, but rendering the Platform doesn't render podinfo. Podinfo isn't
|
||||
rendered because we haven't assigned any Clusters to the workload Fleet.
|
||||
|
||||
Define two new clusters, `east` and `west`, and assign them to the workload
|
||||
Fleet. Create a new file named `clusters.cue` in the root of your Git repository
|
||||
with the following contents:
|
||||
|
||||
<Tabs groupId="clusters">
|
||||
<TabItem value="clusters.cue" label="clusters.cue">
|
||||
```cue showLineNumbers
|
||||
package holos
|
||||
|
||||
// Define two workload clusters for disaster recovery.
|
||||
#Fleets: workload: clusters: {
|
||||
// In CUE _ indicates values are defined elsewhere.
|
||||
east: _
|
||||
west: _
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
This example shows how Holos simplifies configuring multiple clusters with
|
||||
similar configuration by grouping them into a Fleet.
|
||||
|
||||
:::tip
|
||||
Fleets help segment a group of Clusters into one leader and multiple followers
|
||||
by designating one cluster as the primary. Holos makes it safer, easier, and
|
||||
more consistent to reconfigure which cluster is the primary. The primary can be
|
||||
set to automatically restore persistent data from backups, while non-primary
|
||||
clusters can be configured to automatically replicate from the primary.
|
||||
|
||||
Automatic database backup, restore, and streaming replication is an advanced
|
||||
topic enabled by Cloud Native PG and CUE. Check back for a guide on this and
|
||||
other Day 2 operations topics.
|
||||
:::
|
||||
|
||||
## Render the Platform {#render-platform}
|
||||
|
||||
Render the Platform to render the podinfo Component for each of the workload
|
||||
clusters.
|
||||
|
||||
<Tabs groupId="render-platform">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered components/podinfo for cluster west in 99.480792ms
|
||||
rendered components/podinfo for cluster east in 99.882667ms
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
The render platform command iterates over every Cluster in the Fleet and renders
|
||||
each Component assigned to the Fleet. Notice the two additional subdirectories
|
||||
created under the deploy directory, one for each cluster: `east` and `west`.
|
||||
|
||||
<Tabs groupId="tree-platform">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
tree deploy
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
deploy
|
||||
└── clusters
|
||||
├── default
|
||||
│ ├── components
|
||||
│ │ └── podinfo
|
||||
│ │ └── podinfo.gen.yaml
|
||||
│ └── gitops
|
||||
│ └── podinfo.application.gen.yaml
|
||||
# highlight-next-line
|
||||
├── east
|
||||
│ ├── components
|
||||
│ │ └── podinfo
|
||||
│ │ └── podinfo.gen.yaml
|
||||
│ └── gitops
|
||||
│ └── podinfo.application.gen.yaml
|
||||
# highlight-next-line
|
||||
└── west
|
||||
├── components
|
||||
│ └── podinfo
|
||||
│ └── podinfo.gen.yaml
|
||||
└── gitops
|
||||
└── podinfo.application.gen.yaml
|
||||
|
||||
14 directories, 6 files
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Holos ensures consistency and safety by defining the ArgoCD Application once,
|
||||
with strong type checking, at the configuration root.
|
||||
|
||||
New Application resources are automatically generated for the `east` and `west`
|
||||
workload Clusters.
|
||||
|
||||
<Tabs groupId="applications">
|
||||
<TabItem value="east" label="east">
|
||||
`deploy/clusters/east/gitops/podinfo.application.gen.yaml`
|
||||
```yaml showLineNumbers
|
||||
apiVersion: argoproj.io/v1alpha1
|
||||
kind: Application
|
||||
metadata:
|
||||
name: podinfo
|
||||
namespace: argocd
|
||||
spec:
|
||||
destination:
|
||||
server: https://kubernetes.default.svc
|
||||
project: default
|
||||
source:
|
||||
# highlight-next-line
|
||||
path: ./deploy/clusters/east/components/podinfo
|
||||
repoURL: https://example.com/holos-quickstart.git
|
||||
targetRevision: main
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="west" label="west">
|
||||
`deploy/clusters/west/gitops/podinfo.application.gen.yaml`
|
||||
```yaml showLineNumbers
|
||||
apiVersion: argoproj.io/v1alpha1
|
||||
kind: Application
|
||||
metadata:
|
||||
name: podinfo
|
||||
namespace: argocd
|
||||
spec:
|
||||
destination:
|
||||
server: https://kubernetes.default.svc
|
||||
project: default
|
||||
source:
|
||||
# highlight-next-line
|
||||
path: ./deploy/clusters/west/components/podinfo
|
||||
repoURL: https://example.com/holos-quickstart.git
|
||||
targetRevision: main
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="default" label="default">
|
||||
`deploy/clusters/default/gitops/podinfo.application.gen.yaml`
|
||||
```yaml showLineNumbers
|
||||
apiVersion: argoproj.io/v1alpha1
|
||||
kind: Application
|
||||
metadata:
|
||||
name: podinfo
|
||||
namespace: argocd
|
||||
spec:
|
||||
destination:
|
||||
server: https://kubernetes.default.svc
|
||||
project: default
|
||||
source:
|
||||
# highlight-next-line
|
||||
path: ./deploy/clusters/default/components/podinfo
|
||||
repoURL: https://example.com/holos-quickstart.git
|
||||
targetRevision: main
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Add and commit the rendered Platform and workload Clusters.
|
||||
|
||||
<Tabs groupId="commit-render-platform">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git add .
|
||||
git commit -m "holos render platform ./platform - $(holos --version)"
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
[main 5aebcf5] holos render platform ./platform - 0.93.2
|
||||
5 files changed, 263 insertions(+)
|
||||
create mode 100644 clusters.cue
|
||||
create mode 100644 deploy/clusters/east/components/podinfo/podinfo.gen.yaml
|
||||
create mode 100644 deploy/clusters/east/gitops/podinfo.application.gen.yaml
|
||||
create mode 100644 deploy/clusters/west/components/podinfo/podinfo.gen.yaml
|
||||
create mode 100644 deploy/clusters/west/gitops/podinfo.application.gen.yaml
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Upgrade a Helm Chart
|
||||
|
||||
Holos is designed to ease the burden of Day 2 operations. With Holos, upgrading
|
||||
software, integrating new software, and making safe platform-wide configuration
|
||||
changes become easier.
|
||||
|
||||
Let's upgrade the podinfo Component to see how this works in practice. First,
|
||||
update the Component version field to the latest upstream Helm chart version.
|
||||
|
||||
<Tabs groupId="gen-podinfo">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos generate component podinfo --component-version 6.6.2
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
generated component
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Remove the cached chart version.
|
||||
|
||||
<Tabs groupId="gen-podinfo">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
rm -rf components/podinfo/vendor
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Now re-render the Platform.
|
||||
|
||||
<Tabs groupId="render-platform2">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt
|
||||
rendered components/podinfo for cluster east in 327.10475ms
|
||||
rendered components/podinfo for cluster west in 327.796541ms
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Notice we're still using the upstream chart without modifying it. The Holos
|
||||
component wraps around the chart to mix in additional resources and integrate
|
||||
the component with the broader Platform.
|
||||
|
||||
## Visualize the Changes
|
||||
|
||||
Holos makes it easier to see exactly what changes are made and which resources
|
||||
will be applied to the API server. By design, Holos operates on local files,
|
||||
leaving the task of applying them to ecosystem tools like `kubectl` and ArgoCD.
|
||||
This allows platform operators to inspect changes during code review, or before
|
||||
committing the change at all.
|
||||
|
||||
For example, using `git diff`, we see that the only functional change when
|
||||
upgrading this Helm chart is the deployment of a new container image tag to each
|
||||
cluster. Additionally, we can roll out this change gradually by applying it to
|
||||
the east cluster first, then to the west cluster, limiting the potential blast
|
||||
radius of a problematic change.
|
||||
|
||||
<Tabs groupId="git-diff">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
git diff deploy/clusters/east
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```diff showLineNumbers
|
||||
diff --git a/deploy/clusters/east/components/podinfo/podinfo.gen.yaml b/deploy/clusters/east/components/podinfo/podinfo.gen.yaml
|
||||
index 7cc3332..8c1647d 100644
|
||||
--- a/deploy/clusters/east/components/podinfo/podinfo.gen.yaml
|
||||
+++ b/deploy/clusters/east/components/podinfo/podinfo.gen.yaml
|
||||
@@ -5,9 +5,9 @@ kind: Service
|
||||
metadata:
|
||||
name: podinfo
|
||||
labels:
|
||||
- helm.sh/chart: podinfo-6.6.1
|
||||
+ helm.sh/chart: podinfo-6.6.2
|
||||
app.kubernetes.io/name: podinfo
|
||||
- app.kubernetes.io/version: "6.6.1"
|
||||
+ app.kubernetes.io/version: "6.6.2"
|
||||
app.kubernetes.io/managed-by: Helm
|
||||
spec:
|
||||
type: ClusterIP
|
||||
@@ -29,9 +29,9 @@ kind: Deployment
|
||||
metadata:
|
||||
name: podinfo
|
||||
labels:
|
||||
- helm.sh/chart: podinfo-6.6.1
|
||||
+ helm.sh/chart: podinfo-6.6.2
|
||||
app.kubernetes.io/name: podinfo
|
||||
- app.kubernetes.io/version: "6.6.1"
|
||||
+ app.kubernetes.io/version: "6.6.2"
|
||||
app.kubernetes.io/managed-by: Helm
|
||||
spec:
|
||||
replicas: 1
|
||||
@@ -53,7 +53,7 @@ spec:
|
||||
terminationGracePeriodSeconds: 30
|
||||
containers:
|
||||
- name: podinfo
|
||||
# highlight-next-line
|
||||
- image: "ghcr.io/stefanprodan/podinfo:6.6.1"
|
||||
# highlight-next-line
|
||||
+ image: "ghcr.io/stefanprodan/podinfo:6.6.2"
|
||||
imagePullPolicy: IfNotPresent
|
||||
command:
|
||||
- ./podinfo
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
:::tip
|
||||
Holos is designed to surface the _fully rendered_ manifests intended for the
|
||||
Kubernetes API server, making it easier to see and reason about platform-wide
|
||||
configuration changes.
|
||||
:::
|
||||
|
||||
## Recap {#recap}
|
||||
|
||||
In this quickstart guide, we learned how Holos makes it easier, safer, and more
|
||||
consistent to manage a Platform composed of multiple Clusters and upstream Helm
|
||||
charts.
|
||||
|
||||
We covered how to:
|
||||
|
||||
1. Generate a Git repository for the Platform config.
|
||||
2. Wrap the unmodified upstream podinfo Helm chart into a Component.
|
||||
3. Render an individual Component.
|
||||
4. Mix-in your Platform's unique resources to all Components. For example, ArgoCD Application resources.
|
||||
5. Define multiple similar, but not identical, workload clusters.
|
||||
6. Render the manifests for the entire Platform with the `holos render platform` command.
|
||||
7. Upgrade a Helm chart to the latest version as an important Day 2 task.
|
||||
8. Visualize and surface the details of planned changes Platform wide.
|
||||
|
||||
## Dive Deeper
|
||||
|
||||
If you'd like to dive deeper, check out the [Schema API][schema] and [Core
|
||||
API][core] reference docs. The main difference between the schema and core
|
||||
packages is that the schema is used by users to write refined CUE, while the
|
||||
core package is what the schema produces for `holos` to execute. Users rarely
|
||||
need to interact with the Core API when on the happy path, but can use the core
|
||||
package as an escape hatch when the happy path doesn't go where you want.
|
||||
|
||||
|
||||
[application]: https://argo-cd.readthedocs.io/en/stable/user-guide/application-specification/
|
||||
[schema]: /docs/api/author/
|
||||
[core]: /docs/api/core/
|
||||
@@ -1,106 +0,0 @@
|
||||
---
|
||||
description: Self service platform resource management for project teams.
|
||||
slug: /archive/guides/2024-09-17-manage-a-project
|
||||
sidebar_position: 250
|
||||
---
|
||||
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
import Admonition from '@theme/Admonition';
|
||||
|
||||
# Manage a Project
|
||||
|
||||
In this guide we'll explore how Holos easily, safely, and consistently manages
|
||||
platform resources for teams to develop the projects they're working on.
|
||||
|
||||
Intended Audience: Platform Engineers and Software Engineers.
|
||||
|
||||
Goal is to demonstrate how the platform team can consistently, easily, and
|
||||
safely provide platform resources to software engineers.
|
||||
|
||||
Assumption is software engineers have a container they want to deploy onto the
|
||||
platform and make accessible. We'll use httpbin as a stand-in for the dev
|
||||
team's container.
|
||||
|
||||
Project is roughly equivalent to Dev Team for the purpose of this guide, but in
|
||||
practice multiple teams work on a given project over the lifetime of the
|
||||
project, so we structure the files into projects instead of teams.
|
||||
|
||||
## What you'll need {#requirements}
|
||||
|
||||
You'll need the following tools installed to complete this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the Platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Helm Components.
|
||||
3. [kubectl](https://kubernetes.io/docs/tasks/tools/) - to render Kustomize Components.
|
||||
|
||||
If you'd like to apply the manifests we render in this guide complete the
|
||||
following optional, but recommended, steps.
|
||||
|
||||
a. Complete the [Local Cluster] guide to set up a local cluster to work with.
|
||||
b. You'll need a GitHub account to fork the repository associated with this
|
||||
guide.
|
||||
|
||||
## Fork the Guide Repository
|
||||
|
||||
<Tabs groupId="fork">
|
||||
<TabItem value="command" label="Command">
|
||||
```bash
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="output" label="Output">
|
||||
```txt showLineNumbers
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
This guide assumes you will run commands from the root directory of this
|
||||
repository unless stated otherwise.
|
||||
|
||||
[Quickstart]: /docs/quickstart
|
||||
[Local Cluster]: /docs/guides/local-cluster
|
||||
|
||||
## Render the Platform
|
||||
|
||||
So we can build the basic platform. Don't dwell on the platform bits.
|
||||
|
||||
## Apply the Manifests
|
||||
|
||||
Deploy ArgoCD, but not any of the Application resources.
|
||||
|
||||
## Browse to ArgoCD
|
||||
|
||||
Note there is nothing here yet.
|
||||
|
||||
## Switch to your Fork
|
||||
|
||||
Note all of the Applications change consistently.
|
||||
|
||||
## Apply the Applications
|
||||
|
||||
Note how ArgoCD takes over management, no longer need to k apply.
|
||||
|
||||
## Create a Project
|
||||
|
||||
Project is a conceptual, not technical, thing in Holos. Mainly about how components are laid out in the filesystem tree.
|
||||
|
||||
We use a schematic built into holos as an example, the platform team could use the same or provide a similar template and instructions for development teams to self-serve.
|
||||
|
||||
## Render the Platform
|
||||
|
||||
Notice:
|
||||
|
||||
1. Project is registered with the platform at the root.
|
||||
2. HTTPRoute and Namespace resources are added close to the root in `projects`
|
||||
3. Deployment and Service resources are added at the leaf in `projects/httpbin/backend`
|
||||
|
||||
## Update the image tag
|
||||
|
||||
Add a basic schematic to demonstrate this. May need to add two new flags for image url and image tag to the generate subcommand, but should just be two new fields on the struct.
|
||||
|
||||
## Dive Deeper
|
||||
|
||||
Set the stage for constraints. Ideas: Limit what resources can be added,
|
||||
namespaces can be operated in, enforce labels, etc...
|
||||
|
||||
Simple, consistent, easy constraints.
|
||||
|
Before Width: | Height: | Size: 934 KiB |
|
Before Width: | Height: | Size: 703 KiB |
|
Before Width: | Height: | Size: 1.1 MiB |
|
Before Width: | Height: | Size: 1014 KiB |
|
Before Width: | Height: | Size: 728 KiB |
|
Before Width: | Height: | Size: 1.1 MiB |
|
Before Width: | Height: | Size: 1014 KiB |
|
Before Width: | Height: | Size: 854 KiB |
|
Before Width: | Height: | Size: 1.1 MiB |
@@ -1,6 +0,0 @@
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
|
||||
# ArgoCD
|
||||
|
||||
Coming soon.
|
||||
@@ -1,3 +0,0 @@
|
||||
# Backstage
|
||||
|
||||
Coming soon.
|
||||
@@ -1,3 +0,0 @@
|
||||
# Observability
|
||||
|
||||
Coming soon.
|
||||
@@ -1,17 +0,0 @@
|
||||
# Overview
|
||||
|
||||
<!-- https://kubernetes.io/docs/contribute/style/diagram-guide/ -->
|
||||
|
||||
This tutorial covers the following process of getting started with Holos.
|
||||
|
||||
```mermaid
|
||||
graph LR
|
||||
A[1. Install <br>holos] -->
|
||||
B[2. Register <br>account] -->
|
||||
C[3. Generate <br>platform] -->
|
||||
D[4. Render <br>platform] -->
|
||||
E[5. Apply <br>config]
|
||||
|
||||
classDef box fill:#fff,stroke:#000,stroke-width:1px,color:#000;
|
||||
class A,B,C,D,E box
|
||||
```
|
||||
@@ -1,62 +0,0 @@
|
||||
# Registration
|
||||
|
||||
Holos leverages a simple web app to collect and store platform attributes with a web form. Register an account with the web app to create and retrieve the platform model.
|
||||
|
||||
```
|
||||
holos register user
|
||||
```
|
||||
|
||||
:::tip
|
||||
|
||||
Holos allows you to customize all of the sections and fields of your platform model.
|
||||
|
||||
:::
|
||||
|
||||
|
||||
## Generate your Platform
|
||||
|
||||
Generate your platform configuration from the holos reference platform embedded in the `holos` executable. Platform configuration is stored in a git repository.
|
||||
|
||||
```bash
|
||||
mkdir holos-infra
|
||||
cd holos-infra
|
||||
holos generate platform holos
|
||||
```
|
||||
|
||||
The generate command writes many files organized by platform component into the current directory
|
||||
|
||||
TODO: Put a table here describing key elements?
|
||||
|
||||
:::tip
|
||||
|
||||
Take a peek at `holos generate platform --help` to see other platforms embedded in the holos executable.
|
||||
|
||||
:::
|
||||
|
||||
## Push the Platform Form
|
||||
|
||||
```
|
||||
holos push platform form .
|
||||
```
|
||||
|
||||
## Fill in the form
|
||||
|
||||
TODO
|
||||
|
||||
## Pull the Platform Model
|
||||
|
||||
Once the platform model is saved, pull it into the holos-infra repository:
|
||||
|
||||
```
|
||||
holos pull platform model .
|
||||
```
|
||||
|
||||
## Render the Platform
|
||||
|
||||
With the platform model and the platform spec, you're ready to render the complete platform configuration:
|
||||
|
||||
```
|
||||
holos render platform ./platform
|
||||
```
|
||||
|
||||
## Summary
|
||||
|
Before Width: | Height: | Size: 624 KiB |
|
Before Width: | Height: | Size: 116 KiB |
@@ -1,687 +0,0 @@
|
||||
import Tabs from '@theme/Tabs';
|
||||
import TabItem from '@theme/TabItem';
|
||||
import Admonition from '@theme/Admonition';
|
||||
|
||||
# Try Holos Locally
|
||||
|
||||
This guide walks through the process of building and managing a software
|
||||
development platform with Holos. The k3d platform built in this guide is a
|
||||
slimmed down version of the larger, more holistic, Holos reference platform.
|
||||
|
||||
Holos is different from existing tools in a few important ways.
|
||||
|
||||
1. Holos provides a **unified configuration model** purpose built to improve on
|
||||
unmodified Helm charts, Kustomize bases, or anything else that produces
|
||||
structured configuration data.
|
||||
2. Holos all but **eliminates the need to template yaml**, a common source of
|
||||
frustration and errors in production.
|
||||
3. Holos platforms are **composable** and have breadth. The toolchain and
|
||||
techniques scale down to one machine and up to multiple clusters across
|
||||
multiple regions.
|
||||
4. The unified configuration model is well suited to a **Zero Trust security
|
||||
model**. Platform wide policy configuration is easier to manage with Holos.
|
||||
|
||||
---
|
||||
|
||||
This guide assumes commands are run locally. Capitalized terms have specific
|
||||
definitions described in the [Glossary](/docs/glossary).
|
||||
|
||||
## What you'll need {#Requirements}
|
||||
|
||||
You'll need the following tools installed to complete this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos components that wrap upstream Helm charts.
|
||||
3. [k3d](https://k3d.io/#installation) - to provide a k8s api server.
|
||||
4. [OrbStack](https://docs.orbstack.dev/install) or [Docker](https://docs.docker.com/get-docker/) - to use k3d.
|
||||
5. [kubectl](https://kubernetes.io/docs/tasks/tools/) - to interact with the k8s api server.
|
||||
6. [mkcert](https://github.com/FiloSottile/mkcert?tab=readme-ov-file#installation) - to make trusted TLS certificates.
|
||||
7. [jq](https://jqlang.github.io/jq/download/) - to fiddle with JSON output.
|
||||
|
||||
:::note
|
||||
|
||||
Registering an account **is recommended** to try out proper authentication and
|
||||
authorization in Holos, but you can complete this guide without signing up.
|
||||
|
||||
:::
|
||||
|
||||
## Goal {#Goal}
|
||||
|
||||
By the end of this guide you'll have built the foundation of a software
|
||||
development platform. The foundation provides Zero Trust security by
|
||||
holistically integrating off-the-shelf open source software.
|
||||
|
||||
1. Istio is configured to authenticate and authorize requests using an OIDC
|
||||
ID-Token issued by ZITADEL before requests reach backend services.
|
||||
2. The platform provides single sign-on and role based access control for all
|
||||
services running on the platform.
|
||||
|
||||
This guide strives to keep things neat and tidy. All of the resources are
|
||||
located in one k3d cluster and one local Git repository. If you want to clean
|
||||
up at any point, do so with:
|
||||
|
||||
```bash
|
||||
k3d cluster delete workload
|
||||
rm -rf holos-k3d
|
||||
```
|
||||
|
||||
## Sign In or Out {#Sign-In}
|
||||
|
||||
Holos provides integrated authentication and authorization which we'll use in
|
||||
this guide to protect a service. We recommend registering an account to see
|
||||
this in action. Registration also enables you to explore the customizable web
|
||||
form that simplifies complex configuration.
|
||||
|
||||
If you opt-out, the platform will be configured to use a fake identity in place
|
||||
of real id tokens.
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Sign In">
|
||||
```bash
|
||||
holos register user
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Opt Out">
|
||||
```bash
|
||||
holos logout
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Create the Platform {#Create-Platform}
|
||||
|
||||
A server-side platform resource in Holos stores the web form used to simplify
|
||||
platform wide configuration.
|
||||
|
||||
First, initialize an empty Git repository:
|
||||
|
||||
```bash
|
||||
mkdir holos-k3d
|
||||
cd holos-k3d
|
||||
git init
|
||||
```
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
Use `holos` to make the rpc call to create the server-side platform
|
||||
resource.
|
||||
|
||||
```bash
|
||||
holos create platform --name k3d --display-name "Try Holos Locally"
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
Create a blank `platform.metadata.json` file so subsequent holos commands
|
||||
skip rpc calls.
|
||||
|
||||
```bash
|
||||
touch platform.metadata.json
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Generate the Platform {#Generate-Platform}
|
||||
|
||||
Generate the platform code in the repository root.
|
||||
|
||||
```bash
|
||||
holos generate platform k3d
|
||||
```
|
||||
|
||||
Commit the generated platform config to the repository.
|
||||
|
||||
```bash
|
||||
git add .
|
||||
git commit -m "holos generate platform k3d - $(holos --version)"
|
||||
```
|
||||
|
||||
### Push the Platform Form
|
||||
|
||||
Each Holos platform has a Platform Form used to submit top level, platform-wide
|
||||
configuration values. The purpose of the form is to validate configuration
|
||||
values and simplify complicated configurations and integrations.
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
Push the Platform Form to publish it. Browse to the printed URL to view the
|
||||
form.
|
||||
|
||||
```bash
|
||||
holos push platform form .
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
You will update the Platform Model locally in a later step so there's
|
||||
nothing to do in this step. Only signed-in users can push a Platform Form
|
||||
to the Holos web server.
|
||||
|
||||
```bash
|
||||
# holos push platform form .
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
The Platform Form is defined locally in `forms/platform/platform-form.cue`.
|
||||
|
||||
On the web it looks like:
|
||||

|
||||
|
||||
### Update the Platform Model {#Platform-Model}
|
||||
|
||||
Holos needs initial, top level configuration values to render the platform. The
|
||||
Platform Model is the term we use for these values. In this section you will
|
||||
configure role based access control by way of updating the Platform Model.
|
||||
|
||||
In the k3d platform you're building now, role based access control is
|
||||
implemented by asserting against the oidc id token subject. Update the form
|
||||
with the `sub` claim value from your id token. This will ensure only you have
|
||||
access to platform services.
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
Copy and paste the `sub` value into your Platform Form's Subject field.
|
||||
|
||||
```bash
|
||||
holos login --print-claims --log-level=error | jq -r .sub
|
||||
```
|
||||
|
||||
After pasting the `sub` value, click Submit on the form.
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
You don't have an id token when you're signed out, so there's nothing for
|
||||
you to do in this step.
|
||||
|
||||
```bash
|
||||
# holos login --print-claims --log-level=error | jq -r .sub
|
||||
```
|
||||
|
||||
The platform will be configured to assert against the User-Agent header
|
||||
instead.
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Pull the Platform Model {#Pull-the-Platform-Model}
|
||||
|
||||
The Platform Model needs to be pulled into the local Git repository after the
|
||||
form has been submitted. Next, we'll run `holos render` which operates
|
||||
exclusively on local files.
|
||||
|
||||
Holos stores the Platform Model in the `platform.config.json` file. Holos
|
||||
provides this file as input to CUE when rendering the platform. This file is
|
||||
intended to be added to version control.
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
Pull the updated Platform Model into the local repository.
|
||||
|
||||
```bash
|
||||
holos pull platform model .
|
||||
git add platform.config.json
|
||||
git commit -m "Add platform model"
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
The holos generate platform k3d command created an initial Platform Model in
|
||||
`platform.config.json`. As a result there's nothing to do in this step.
|
||||
|
||||
```bash
|
||||
# holos pull platform model .
|
||||
# git add platform.config.json
|
||||
# git commit -m "Add platform model"
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## Render the Platform {#Render-the-Platform}
|
||||
|
||||
Holos has everything necessary to render the platform once the
|
||||
`platform.config.json` file and the code from `holos generate` are in the
|
||||
current directory.
|
||||
|
||||
Rendering a platform is the process of iterating over each platform component
|
||||
and rendering it into plain yaml. Holos does not apply the resulting manifests.
|
||||
Other tools like kubectl, ArgoCD, or Flux are responsible for applying the
|
||||
manifests.
|
||||
|
||||
```bash
|
||||
holos render platform ./platform
|
||||
```
|
||||
|
||||
The render command writes the manifest files to the `deploy/` directory. Commit
|
||||
the files so they can be applied via GitOps later.
|
||||
|
||||
```bash
|
||||
git add deploy
|
||||
git commit -m "holos render platform ./platform"
|
||||
```
|
||||
|
||||
:::info[Don't blink, this is where Holos builds the platform]
|
||||
|
||||
It usually takes no more than a few seconds.
|
||||
|
||||
Rendering the holos reference platform currently results in about 500K lines of
|
||||
yaml. In contrast, roughly 80K lines are produced by this slimmed down k3d
|
||||
platform.
|
||||
|
||||
We mention this because the scale doesn't matter as much as it does with other
|
||||
tools. Manage millions of lines of configuration with Holos the same way this
|
||||
guide manages thousands. This is made possible by the unique way CUE unifies
|
||||
all configuration into one single model.
|
||||
|
||||
:::
|
||||
|
||||
## Configure DNS {#DNS}
|
||||
|
||||
Configure your machine to resolve `*.holos.localhost` to your loopback
|
||||
interface. This is necessary for requests to reach the workload cluster.
|
||||
|
||||
<Tabs>
|
||||
<TabItem value="macos" label="macOS" default>
|
||||
Cache sudo credentials.
|
||||
|
||||
Admin access is necessary to setup a local dnsmasq instance and configure
|
||||
macOS's DNS resolver.
|
||||
|
||||
```bash
|
||||
sudo -v
|
||||
```
|
||||
|
||||
Resolve *.holos.localhost DNS queries to 127.0.0.1.
|
||||
|
||||
```bash
|
||||
bash ./scripts/local-dns
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="linux" label="Linux">
|
||||
[NSS-myhostname](http://man7.org/linux/man-pages/man8/nss-myhostname.8.html)
|
||||
ships with many Linux distributions and should resolve *.localhost
|
||||
automatically to 127.0.0.1.
|
||||
|
||||
Otherwise it is installable with:
|
||||
|
||||
```bash
|
||||
sudo apt install libnss-myhostname
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="windows" label="Windows">
|
||||
Ensure the loopback interface has at least the following names in `C:\windows\system32\drivers\etc\hosts`
|
||||
|
||||
```
|
||||
127.0.0.1 httpbin.holos.localhost app.holos.localhost
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
||||
## Create the Cluster {#Create-Cluster}
|
||||
|
||||
The Workload Cluster is where your applications and services will be deployed.
|
||||
In production this is usually an EKS, GKE, or AKS cluster.
|
||||
|
||||
:::tip
|
||||
|
||||
Holos supports all compliant Kubernetes clusters. Holos was developed and tested
|
||||
on GKE, EKS, Talos, k3s, and Kubeadm clusters.
|
||||
|
||||
:::
|
||||
|
||||
<Tabs>
|
||||
<TabItem value="evaluate" label="Try Holos" default>
|
||||
Use this command when exploring Holos.
|
||||
|
||||
```bash
|
||||
k3d cluster create workload \
|
||||
--port "443:443@loadbalancer" \
|
||||
--k3s-arg "--disable=traefik@server:0"
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="develop" label="Develop Holos">
|
||||
Use this command when developing Holos.
|
||||
|
||||
```bash
|
||||
k3d registry create registry.holos.localhost --port 5100
|
||||
```
|
||||
|
||||
```bash
|
||||
k3d cluster create workload \
|
||||
--registry-use k3d-registry.holos.localhost:5100 \
|
||||
--port "443:443@loadbalancer" \
|
||||
--k3s-arg "--disable=traefik@server:0"
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
Traefik is disabled because Istio provides the same functionality.
|
||||
|
||||
## Apply the Platform Components {#Apply-Platform-Components}
|
||||
|
||||
Use `kubectl` to apply each platform component. In production, it's common to
|
||||
fully automate this process with ArgoCD, but we use `kubectl` to the same
|
||||
effect.
|
||||
|
||||
### Local CA {#Local-CA}
|
||||
|
||||
Holos platforms use cert manager to issue tls certificates. The browser and
|
||||
tools we're using need to trust these certificates to work together.
|
||||
|
||||
Admin access is necessary for `mkcert` to manage the certificate into your trust
|
||||
stores.
|
||||
|
||||
```bash
|
||||
sudo -v
|
||||
```
|
||||
|
||||
Manage the local CA and copy the CA key to the workload cluster so that cert
|
||||
manager can manage trusted certificates.
|
||||
|
||||
```bash
|
||||
bash ./scripts/local-ca
|
||||
```
|
||||
|
||||
:::warning
|
||||
|
||||
Take care to run the local-ca script each time you create the workload cluster
|
||||
so that Certificates are issued correctly.
|
||||
|
||||
:::
|
||||
|
||||
|
||||
### Service Mesh
|
||||
|
||||
The platform service mesh provides an ingress gateway and connectivity useful
|
||||
for observability, reliability, and security.
|
||||
|
||||
#### Namespaces
|
||||
|
||||
With Holos, components are automatically added to the namespaces component,
|
||||
useful for centrally managed policies.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/namespaces
|
||||
```
|
||||
|
||||
#### Custom Resource Definitions
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/gateway-api
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/istio-base
|
||||
```
|
||||
|
||||
#### Cert Manager {#cert-manager}
|
||||
|
||||
Apply the cert-manager controller.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/cert-manager
|
||||
```
|
||||
|
||||
Apply the ClusterIssuer which issues Certificate resources using the local
|
||||
certificate authority.
|
||||
|
||||
```bash
|
||||
kubectl -n cert-manager wait pod -l app.kubernetes.io/component=webhook --for=condition=Ready
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/local-ca
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/certificates
|
||||
kubectl -n istio-gateways wait certificate httpbin.holos.localhost --for=condition=Ready
|
||||
```
|
||||
|
||||
:::warning
|
||||
|
||||
The certificate will time out before becoming ready if the [local-ca](#Local-CA)
|
||||
script was not run after the cluster was created.
|
||||
|
||||
:::
|
||||
|
||||
#### Istio {#Istio}
|
||||
|
||||
Istio implements the Service Mesh.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/istio-cni
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/istiod
|
||||
kubectl apply --server-side=true -f ./deploy/clusters/workload/components/gateway
|
||||
```
|
||||
|
||||
Verify the Gateway is programmed and the listeners have been accepted:
|
||||
|
||||
```bash
|
||||
kubectl -n istio-gateways wait gateway default --for=condition=Accepted
|
||||
```
|
||||
|
||||
#### httpbin {#httpbin}
|
||||
|
||||
httpbin is a simple backend service useful for end-to-end testing.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/httpbin-backend
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/httpbin-routes
|
||||
kubectl -n holos-system wait pod -l app.kubernetes.io/instance=httpbin --for=condition=Ready
|
||||
```
|
||||
|
||||
:::info
|
||||
|
||||
Browse to [https://httpbin.holos.localhost/](https://httpbin.holos.localhost/)
|
||||
to verify end to end connectivity. You should see the httpbin index page.
|
||||
|
||||
:::
|
||||
|
||||
### Authenticating Proxy
|
||||
|
||||
The auth proxy is responsible for authenticating browser requests, handling the
|
||||
oidc authentication flow, and providing a signed id token to the rest of the
|
||||
services in the mesh.
|
||||
|
||||
#### Cookie Secret
|
||||
|
||||
The auth proxy stores session information in an encrypted cookie. Generate a
|
||||
random cookie encryption Secret and apply.
|
||||
|
||||
```bash
|
||||
LC_ALL=C tr -dc A-Za-z0-9 </dev/urandom \
|
||||
| head -c 32 \
|
||||
| kubectl create secret generic "authproxy" \
|
||||
--from-file=cookiesecret=/dev/stdin \
|
||||
--dry-run=client -o yaml \
|
||||
| kubectl apply -n istio-gateways -f-
|
||||
```
|
||||
|
||||
#### Deployment
|
||||
|
||||
The auth proxy Deployment receives requests from web browsers and responds with
|
||||
an authentication decision.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/authproxy
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/authroutes
|
||||
```
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
<Admonition type="info">
|
||||
Verify authentication is working by browsing to
|
||||
[https://httpbin.holos.localhost/holos/authproxy](https://httpbin.holos.localhost/holos/authproxy).
|
||||
|
||||
We want a simple `Authenticated` response.
|
||||
|
||||
<Admonition type="tip">
|
||||
You may need to refresh the page a few times while the platform configures
|
||||
itself.
|
||||
</Admonition>
|
||||
</Admonition>
|
||||
|
||||
Istio will respond with `no healthy upstream` until the pod becomes ready.
|
||||
Wait for the pod to become ready with:
|
||||
|
||||
```bash
|
||||
kubectl -n holos-system wait pod -l app.kubernetes.io/instance=httpbin --for=condition=Ready
|
||||
```
|
||||
|
||||
Once authenticated, visit
|
||||
[https://httpbin.holos.localhost/holos/authproxy/userinfo](https://httpbin.holos.localhost/holos/authproxy/userinfo)
|
||||
which returns a subset of claims from your id token.
|
||||
|
||||
<Admonition type="warning">
|
||||
If you get `Unauthorized` instead of a json response body, make sure you
|
||||
[authenticated](https://httpbin.holos.localhost/holos/authproxy) first.
|
||||
</Admonition>
|
||||
|
||||
```json
|
||||
{
|
||||
"user": "275552236589843464",
|
||||
"email": "demo@holos.run",
|
||||
"preferredUsername": "demo"
|
||||
}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
The auth proxy will always try to sign you in when you are signed out, so
|
||||
there isn't much to do here. Please do take a moment to glance at the
|
||||
Signed In tab to see how this would work if you were signed in.
|
||||
|
||||
The `k3d` platform relies on `https://login.holos.run` to issue id tokens.
|
||||
Authorization has been configured against fake request headers instead of
|
||||
the real `x-oidc-id-token` header.
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Authorization Policy
|
||||
|
||||
Configure authorization policies using attributes of the authenticated request.
|
||||
Authorization policies route web requests through the auth proxy and then
|
||||
validate all requests against the `x-oidc-id-token` header.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f deploy/clusters/workload/components/authpolicy
|
||||
```
|
||||
|
||||
Istio make take a few seconds to program the Gateway with the
|
||||
AuthorizationPolicy resources.
|
||||
|
||||
## Try out Zero Trust
|
||||
|
||||
A basic Zero Trust security model is now in place. The platform authenticates
|
||||
and authorizes requests before they reach the backend service.
|
||||
|
||||
### Browser
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
The platform has been configured to authorize requests with a `x-oidc-id-token` header.
|
||||
|
||||
1. Verify authentication is working by browsing to [https://httpbin.holos.localhost/dump/request](https://httpbin.holos.localhost/dump/request).
|
||||
- Refresh the page a few times.
|
||||
- The `httpbin` backend pods should echo back the `x-oidc-id-token`
|
||||
header injected by the auth proxy.
|
||||
2. Note the `x-oidc-id-token` header is not sent by your browser but is
|
||||
received by the backend service.
|
||||
- This design reduces the risk of exposing id tokens in the browser.
|
||||
- Browser request size remains constant as more claims are added to id
|
||||
tokens.
|
||||
- Reliability improves because id tokens often overflow request header
|
||||
buffers when they pass through middle boxes across the internet.
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
The platform has been configured to authorize requests with a `User-Agent: anonymous` header.
|
||||
|
||||
1. Open an incognito window (Cmd+Shift+N) to verify the platform is
|
||||
enforcing the authorization policy.
|
||||
2. Browse to
|
||||
[https://httpbin.holos.localhost/dump/request](https://httpbin.holos.localhost/dump/request)
|
||||
you should be redirected to the sign in page by the auth proxy.
|
||||
- You **do not** need to register or sign in.
|
||||
- This step verifies the platform is redirecting unauthenticated
|
||||
requests to the identity provider.
|
||||
- Navigate back or close and re-open an incognito window.
|
||||
3. Set your `User-Agent` header to `anonymous` using your browser developer tools.
|
||||
- For Chrome the process is described
|
||||
[here](https://developer.chrome.com/docs/devtools/device-mode/override-user-agent#override_the_user_agent_string).
|
||||
- The purpose is to simulate an authenticated request.
|
||||
4. Browse to
|
||||
[https://httpbin.holos.localhost/dump/request](https://httpbin.holos.localhost/dump/request).
|
||||
- The platform should allow the request through to the backend pod.
|
||||
- `httpbin` should echo back your request which should contain `User-Agent: anonymous`.
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### Command Line
|
||||
|
||||
Verify unauthenticated requests are blocked by default outside the browser.
|
||||
|
||||
```bash
|
||||
curl -I https://httpbin.holos.localhost/dump/request
|
||||
```
|
||||
|
||||
You should receive a `HTTP/2 302` response that redirects to `location:
|
||||
https://login.holos.run` to start the oauth login flow.
|
||||
|
||||
Next, verify authenticated requests are allowed.
|
||||
|
||||
<Tabs groupId="registration">
|
||||
<TabItem value="registered" label="Signed In">
|
||||
The platform is configured to authenticate the id token present in the
|
||||
`x-oidc-id-token` header.
|
||||
|
||||
💡 It also works with `grpcurl`.
|
||||
|
||||
```bash
|
||||
curl -H x-oidc-id-token:$(holos token) https://httpbin.holos.localhost/dump/request
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem value="unregistered" label="Signed Out">
|
||||
The platform is configured to authorize any request with `User-Agent:
|
||||
anonymous` in place of validating the oidc id token.
|
||||
|
||||
💡 Take a moment to click the Signed In tab, I don't want you to miss how
|
||||
cool `$(holos token)` is.
|
||||
|
||||
```bash
|
||||
curl -A anonymous https://httpbin.holos.localhost/dump/request
|
||||
```
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
You should receive a response showing the request headers the backend received.
|
||||
|
||||
:::tip
|
||||
|
||||
Note how the platform secures both web browser and command line api access to
|
||||
the backend httpbin service. httpbin itself has no authentication or
|
||||
authorization functionality.
|
||||
|
||||
:::
|
||||
|
||||
## Summary
|
||||
|
||||
Thank you for taking the time to try out Holos. In this guide, you built the
|
||||
foundation of a software development platform that:
|
||||
|
||||
1. Provides a unified configuration model with CUE that
|
||||
- Supports unmodified Helm Charts, Kustomize Kustomizations, plain YAML.
|
||||
- Provides a web form to pass top level parameters.
|
||||
2. Reduces errors by eliminating the need to template unstructured text.
|
||||
3. Is composable and scales down to a local machine.
|
||||
4. Provides an way to safely configure broad authentication and authorization
|
||||
policy.
|
||||
|
||||
## Next Steps
|
||||
|
||||
Dive deeper with the following resources that build on the foundation you have now.
|
||||
|
||||
1. Explore the [Rendering Process](/docs/concepts#rendering) in Holos.
|
||||
2. Dive deeper into the [Platform Manifests](./platform-manifests) rendered in this guide.
|
||||
3. Deploy [ArgoCD](../argocd) onto the foundation you built.
|
||||
4. Deploy [Backstage](../backstage) as a portal to the integrated platform components.
|
||||
|
||||
## Clean-Up
|
||||
|
||||
If you'd like to clean up the resources you created in this guide, remove them
|
||||
with:
|
||||
|
||||
```bash
|
||||
k3d cluster delete workload
|
||||
rm -rf holos-k3d
|
||||
```
|
||||
@@ -1,137 +0,0 @@
|
||||
# Platform Manifests
|
||||
|
||||
This document provides an example of how Holos uses CUE and Helm to unify and
|
||||
render the platform configuration. It refers to the manifests rendered in the
|
||||
Try Holos Locally guide.
|
||||
|
||||
Take a moment to review the manifests `holos` rendered to build the platform.
|
||||
|
||||
### ArgoCD Application
|
||||
|
||||
Note the Git URL in the Platform Model is used to derive the ArgoCD
|
||||
`Application` resource for all of the platform components.
|
||||
|
||||
```yaml
|
||||
# deploy/clusters/workload/gitops/namespaces.application.gen.yaml
|
||||
apiVersion: argoproj.io/v1alpha1
|
||||
kind: Application
|
||||
metadata:
|
||||
name: namespaces
|
||||
namespace: argocd
|
||||
spec:
|
||||
destination:
|
||||
server: https://kubernetes.default.svc
|
||||
project: default
|
||||
source:
|
||||
# highlight-next-line
|
||||
path: /deploy/clusters/workload/components/namespaces
|
||||
# highlight-next-line
|
||||
repoURL: https://github.com/holos-run/holos-k3d.git
|
||||
# highlight-next-line
|
||||
targetRevision: HEAD
|
||||
```
|
||||
|
||||
One ArgoCD `Application` resource is produced for each Holos component by
|
||||
default. The CUE definition which produces the rendered output is defined in
|
||||
`buildplan.cue` around line 222.
|
||||
|
||||
:::tip
|
||||
|
||||
Note how CUE does not use error-prone text templates, the language is well
|
||||
specified and typed which reduces errors when unifying the configuration with
|
||||
the Platform Model in the following `#Argo` definition.
|
||||
|
||||
:::
|
||||
|
||||
```cue
|
||||
// buildplan.cue
|
||||
|
||||
// #Argo represents an argocd Application resource for each component, written
|
||||
// using the #HolosComponent.deployFiles field.
|
||||
#Argo: {
|
||||
ComponentName: string
|
||||
|
||||
Application: app.#Application & {
|
||||
metadata: name: ComponentName
|
||||
metadata: namespace: "argocd"
|
||||
spec: {
|
||||
destination: server: "https://kubernetes.default.svc"
|
||||
project: "default"
|
||||
source: {
|
||||
// highlight-next-line
|
||||
path: "\(_Platform.Model.argocd.deployRoot)/deploy/clusters/\(_ClusterName)/components/\(ComponentName)"
|
||||
// highlight-next-line
|
||||
repoURL: _Platform.Model.argocd.repoURL
|
||||
// highlight-next-line
|
||||
targetRevision: _Platform.Model.argocd.targetRevision
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// deployFiles represents the output files to write along side the component.
|
||||
deployFiles: "clusters/\(_ClusterName)/gitops/\(ComponentName).application.gen.yaml": yaml.Marshal(Application)
|
||||
}
|
||||
```
|
||||
|
||||
### Helm Chart
|
||||
|
||||
The `cert-manger` component renders using the upstream Helm chart. The build
|
||||
plan that defines the helm chart to use along with the values to provide looks
|
||||
like the following.
|
||||
|
||||
:::tip
|
||||
|
||||
Holos fully supports your existing Helm charts. Consider leveraging `holos` as
|
||||
an alternative to umbrella charts.
|
||||
|
||||
:::
|
||||
|
||||
```cue
|
||||
// components/cert-manager/cert-manager.cue
|
||||
package holos
|
||||
|
||||
// Produce a helm chart build plan.
|
||||
(#Helm & Chart).Output
|
||||
|
||||
let Chart = {
|
||||
Name: "cert-manager"
|
||||
Version: "1.14.5"
|
||||
Namespace: "cert-manager"
|
||||
|
||||
Repo: name: "jetstack"
|
||||
Repo: url: "https://charts.jetstack.io"
|
||||
|
||||
// highlight-next-line
|
||||
Values: {
|
||||
installCRDs: true
|
||||
startupapicheck: enabled: false
|
||||
// Must not use kube-system on gke autopilot. GKE Warden blocks access.
|
||||
// highlight-next-line
|
||||
global: leaderElection: namespace: Namespace
|
||||
|
||||
// https://cloud.google.com/kubernetes-engine/docs/concepts/autopilot-resource-requests#min-max-requests
|
||||
resources: requests: {
|
||||
cpu: "250m"
|
||||
memory: "512Mi"
|
||||
"ephemeral-storage": "100Mi"
|
||||
}
|
||||
// highlight-next-line
|
||||
webhook: resources: Values.resources
|
||||
// highlight-next-line
|
||||
cainjector: resources: Values.resources
|
||||
// highlight-next-line
|
||||
startupapicheck: resource: Values.resources
|
||||
|
||||
// https://cloud.google.com/kubernetes-engine/docs/how-to/autopilot-spot-pods
|
||||
nodeSelector: {
|
||||
"kubernetes.io/os": "linux"
|
||||
if _ClusterName == "management" {
|
||||
"cloud.google.com/gke-spot": "true"
|
||||
}
|
||||
}
|
||||
webhook: nodeSelector: Values.nodeSelector
|
||||
cainjector: nodeSelector: Values.nodeSelector
|
||||
startupapicheck: nodeSelector: Values.nodeSelector
|
||||
}
|
||||
}
|
||||
```
|
||||
@@ -1,28 +0,0 @@
|
||||
# Local Development
|
||||
|
||||
This document captures notes on locally developing Holos.
|
||||
|
||||
Follow the steps in [Try Holos Locally](../guides/try-holos), but take care
|
||||
to select `Develop` tabs when creating the k3d cluster so you have a local
|
||||
registry to push to.
|
||||
|
||||
## Apply Resources
|
||||
|
||||
Work will be done in the `dev-holos` namespace.
|
||||
|
||||
Apply the infrastructure, which should persist when tilt is started / stopped.
|
||||
|
||||
```bash
|
||||
kubectl apply --server-side=true -f ./hack/tilt/k8s/dev-holos-infra
|
||||
```
|
||||
|
||||
This creates the PostgresCluster, service account, etc...
|
||||
|
||||
## Start tilt
|
||||
|
||||
Tilt will build the go executable, build the container, then push it to the
|
||||
local repository associated with k3d.
|
||||
|
||||
```bash
|
||||
./hack/tilt/bin/tilt up
|
||||
```
|
||||
@@ -23,7 +23,7 @@ deployed services safely and consistently.
|
||||
|
||||
<DocCardList />
|
||||
|
||||
[Quickstart]: /docs/quickstart/
|
||||
[Deploy a Service]: /docs/guides/deploy-a-service/
|
||||
[Change a Service]: /docs/guides/change-a-service/
|
||||
[Technical Overview]: /docs/technical-overview/
|
||||
[Quickstart]: ./guides/quickstart.mdx
|
||||
[Deploy a Service]: ./guides/deploy-a-service.mdx
|
||||
[Change a Service]: ./guides/change-a-service.mdx
|
||||
[Technical Overview]: ./technical-overview.md
|
||||
|
||||
@@ -18,12 +18,11 @@ This guide builds on the concepts covered in the [Quickstart] and [Deploy a Serv
|
||||
|
||||
Like our other guides, this guide is intended to be useful without needing to
|
||||
run each command. If you'd like to apply the manifests to a real Cluster,
|
||||
complete the [Local Cluster Guide](/docs/guides/local-cluster) before this
|
||||
guide.
|
||||
complete the [Local Cluster Guide] before this guide.
|
||||
|
||||
You'll need the following tools installed to run the commands in this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the Platform.
|
||||
1. [holos] - to build the Platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos Components that
|
||||
wrap Helm charts.
|
||||
3. [kubectl](https://kubernetes.io/docs/tasks/tools/) - to render Holos
|
||||
@@ -706,14 +705,17 @@ Thanks for taking the time to work through this guide which covered:
|
||||
value is defined, making it faster and easier to troubleshoot problems.
|
||||
|
||||
|
||||
[Quickstart]: /docs/quickstart/
|
||||
[Deploy a Service]: /docs/guides/deploy-a-service/
|
||||
[Change a Service]: /docs/guides/change-a-service/
|
||||
[Helm]: /docs/api/author/v1alpha3/#Helm
|
||||
[Kubernetes]: /docs/api/author/v1alpha3/#Kubernetes
|
||||
[Kustomize]: /docs/api/author/v1alpha3/#Kustomize
|
||||
[ComponentFields]: /docs/api/author/v1alpha3/#ComponentFields
|
||||
[platform-files]: /docs/quickstart/#how-platform-rendering-works
|
||||
[Quickstart]: ./quickstart.mdx
|
||||
[Local Cluster Guide]: ./local-cluster.mdx
|
||||
[platform-files]: ./quickstart.mdx#how-platform-rendering-works
|
||||
[Deploy a Service]: ./deploy-a-service.mdx
|
||||
[Change a Service]: ./change-a-service.mdx
|
||||
[Helm]: ../api/author.md#Helm
|
||||
[Kubernetes]: ../api/author.md#Kubernetes
|
||||
[Kustomize]: ../api/author.md#Kustomize
|
||||
[ComponentFields]: ../api/author.md#ComponentFields
|
||||
[holos]: ../start/install.md
|
||||
|
||||
[AppProject]: https://argo-cd.readthedocs.io/en/stable/user-guide/projects/
|
||||
[unification operator]: https://cuelang.org/docs/reference/spec/#unification
|
||||
[code-owners]: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
|
||||
@@ -727,7 +729,6 @@ value is defined, making it faster and easier to troubleshoot problems.
|
||||
[comprehension]: https://cuelang.org/docs/reference/spec/#comprehensions
|
||||
[code owners]: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
|
||||
[ReferenceGrant]: https://gateway-api.sigs.k8s.io/api-types/referencegrant/
|
||||
[Local Cluster Guide]: /docs/guides/local-cluster
|
||||
[Bank of Holos]: https://github.com/holos-run/bank-of-holos
|
||||
[default value]: https://cuelang.org/docs/tour/types/defaults/
|
||||
[constrain]: https://cuelang.org/docs/tour/basics/constraints/
|
||||
|
||||
@@ -30,8 +30,7 @@ platform team.
|
||||
|
||||
Like our other guides, this guide is intended to be useful without needing to
|
||||
run the commands. If you'd like to render the platform and apply the manifests
|
||||
to a real Cluster, complete the [Local Cluster
|
||||
Guide](/docs/guides/local-cluster) before this guide.
|
||||
to a real Cluster, complete the [Local Cluster Guide] before this guide.
|
||||
|
||||
:::important
|
||||
This guide relies on the concepts we covered in the [Quickstart] guide.
|
||||
@@ -39,7 +38,7 @@ This guide relies on the concepts we covered in the [Quickstart] guide.
|
||||
|
||||
You'll need the following tools installed to run the commands in this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the Platform.
|
||||
1. [holos] - to build the Platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos Components that
|
||||
wrap Helm charts.
|
||||
3. [kubectl](https://kubernetes.io/docs/tasks/tools/) - to render Holos
|
||||
@@ -469,8 +468,7 @@ for Cluster in _Fleets.workload.clusters {
|
||||
|
||||
:::tip
|
||||
The behavior of files in the `platform/` directory is covered in detail in the
|
||||
[how platform rendering works](/docs/quickstart/#how-platform-rendering-works)
|
||||
section of the Quickstart guide.
|
||||
[how platform rendering works] section of the Quickstart guide.
|
||||
:::
|
||||
|
||||
Before we render the platform, we want to make sure our podinfo component, and
|
||||
@@ -1451,6 +1449,7 @@ configuration change a team needs to roll out after a service has been deployed
|
||||
for some time.
|
||||
|
||||
[Quickstart]: ./quickstart.mdx
|
||||
[how platform rendering works]: ./quickstart.mdx#how-platform-rendering-works
|
||||
[Change a Service]: ./change-a-service.mdx
|
||||
[Helm]: ../api/author.md#Helm
|
||||
[Kubernetes]: ../api/author.md#Kubernetes
|
||||
@@ -1472,3 +1471,4 @@ for some time.
|
||||
[code owners]: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
|
||||
[ReferenceGrant]: https://gateway-api.sigs.k8s.io/api-types/referencegrant/
|
||||
[Bank of Holos]: https://github.com/holos-run/bank-of-holos
|
||||
[holos]: ../start/install.md
|
||||
|
||||
@@ -4852,8 +4852,8 @@ Overview].
|
||||
[prometheus]: https://github.com/prometheus-community/helm-charts/tree/prometheus-25.27.0/charts/prometheus
|
||||
[blackbox]: https://github.com/prometheus-community/helm-charts/tree/prometheus-blackbox-exporter-9.0.1/charts/prometheus-blackbox-exporter
|
||||
[httpbin]: https://github.com/mccutchen/go-httpbin/tree/v2.15.0
|
||||
[Local Cluster]: /docs/guides/local-cluster/
|
||||
[guides]: /docs/guides/
|
||||
[Technical Overview]: /docs/technical-overview/
|
||||
[Installation]: /docs/install/
|
||||
[Local Cluster]: ./local-cluster.mdx
|
||||
[guides]: ../guides.md
|
||||
[Technical Overview]: ../technical-overview.md
|
||||
[Installation]: ../start/install.md
|
||||
[Config Schema]: #config-schema
|
||||
|
||||
@@ -16,8 +16,7 @@ have a standard Kubernetes API server with proper DNS and TLS certificates.
|
||||
You'll be able to easily reset the cluster to a known good state to iterate on
|
||||
your own Platform.
|
||||
|
||||
The [Concepts](/docs/concepts) page defines capitalized terms such as Platform
|
||||
and Component.
|
||||
The [Concepts] page defines capitalized terms such as Platform and Component.
|
||||
|
||||
## Reset the Cluster
|
||||
|
||||
@@ -105,7 +104,7 @@ You're back to the same state as the first time you completed this guide.
|
||||
|
||||
You'll need the following tools installed to complete this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the platform.
|
||||
1. [holos] - to build the platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos components that wrap upstream Helm charts.
|
||||
3. [k3d](https://k3d.io/#installation) - to provide a k8s api server.
|
||||
4. [OrbStack](https://docs.orbstack.dev/install) or [Docker](https://docs.docker.com/get-docker/) - to use k3d.
|
||||
@@ -274,4 +273,8 @@ k3d cluster delete workload
|
||||
## Next Steps
|
||||
|
||||
Now that you have a real cluster, apply and explore the manifests Holos renders
|
||||
in the [Quickstart](/docs/quickstart) guide.
|
||||
in the [Quickstart] guide.
|
||||
|
||||
[Concepts]: ../start/concepts.md
|
||||
[Quickstart]: ./quickstart.mdx
|
||||
[holos]: ../start/install.md
|
||||
|
||||
@@ -47,12 +47,11 @@ of Holos.
|
||||
|
||||
This guide is intended to be informative without needing to run the commands.
|
||||
If you'd like to render the platform and apply the manifests to a real Cluster,
|
||||
complete the [Local Cluster Guide](/docs/guides/local-cluster) before this
|
||||
guide.
|
||||
complete the [Local Cluster Guide] before this guide.
|
||||
|
||||
You'll need the following tools installed to run the commands in this guide.
|
||||
|
||||
1. [holos](/docs/install) - to build the Platform.
|
||||
1. [holos][Installation] - to build the Platform.
|
||||
2. [helm](https://helm.sh/docs/intro/install/) - to render Holos Components that
|
||||
wrap Helm charts.
|
||||
3. [kubectl](https://kubernetes.io/docs/tasks/tools/) - to render Holos
|
||||
@@ -61,8 +60,7 @@ Components that render with Kustomize.
|
||||
## Install Holos
|
||||
|
||||
Start by installing the `holos` command line tool with the following command.
|
||||
If you don't have Go, refer to [Installation](/docs/install/) to download the
|
||||
executable.
|
||||
If you don't have Go, refer to [Installation] to download the executable.
|
||||
|
||||
<Tabs groupId="go-install">
|
||||
<TabItem value="command" label="Command">
|
||||
@@ -1121,11 +1119,12 @@ Thank you for finishing the Quickstart guide. Dive deeper with the next guide
|
||||
on how to [Deploy a Service] which explains how to take one of your existing
|
||||
Helm charts or Deployments and manage it with Holos.
|
||||
|
||||
[application]: https://argo-cd.readthedocs.io/en/stable/user-guide/application-specification/
|
||||
[core]: /docs/api/core/v1alpha4/
|
||||
[Core API]: /docs/api/core/
|
||||
[Author API]: /docs/api/author/
|
||||
[Deploy a Service]: /docs/guides/deploy-a-service/
|
||||
[Manage a Project]: /docs/guides/manage-a-project/
|
||||
[rendered manifests pattern]: https://akuity.io/blog/the-rendered-manifests-pattern/
|
||||
[application]: https://argo-cd.readthedocs.io/en/stable/user-guide/application-specification/
|
||||
[core]: ../api/core.md
|
||||
[Core API]: ../api/core.md
|
||||
[Author API]: ../api/author.md
|
||||
[Deploy a Service]: ./deploy-a-service.mdx
|
||||
[Local Cluster Guide]: ./local-cluster.mdx
|
||||
[Installation]: ../start/install.md
|
||||
[^1]: [The Basics of CUE](https://cuelang.org/docs/tour/basics/json-superset/)
|
||||
|
||||
@@ -43,11 +43,11 @@ I rewrote our scripts and charts using CUE and Go, replacing the glue layer. The
|
||||
|
||||
Thanks for reading. Take Holos for a spin on your local machine with our [Quickstart] guide.
|
||||
|
||||
[Guides]: /docs/guides/
|
||||
[API Reference]: /docs/api/
|
||||
[Quickstart]: /docs/quickstart/
|
||||
[Guides]: ./guides.md
|
||||
[API Reference]: ./api.md
|
||||
[Quickstart]: ./guides/quickstart.mdx
|
||||
[CUE]: https://cuelang.org/
|
||||
[Author API]: /docs/api/author/
|
||||
[Core API]: /docs/api/core/
|
||||
[Author API]: ./api/author.md
|
||||
[Core API]: ./api/core.md
|
||||
[Open Infrastructure Services]: https://openinfrastructure.co/
|
||||
[Why are we templating YAML]: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&query=https%3A%2F%2Fleebriggs.co.uk%2Fblog%2F2019%2F02%2F07%2Fwhy-are-we-templating-yaml&sort=byDate&type=story
|
||||
|
||||
@@ -10,4 +10,4 @@ These documents provide additional context to supplement the [Quickstart] guide.
|
||||
|
||||
<DocCardList />
|
||||
|
||||
[Quickstart]: /docs/quickstart/
|
||||
[Quickstart]: ./guides/quickstart.mdx
|
||||
|
||||
@@ -9,8 +9,7 @@ sidebar_position: 200
|
||||
## Introduction
|
||||
|
||||
This page is intended as a high level conceptual overview of the key concepts in
|
||||
Holos. Refer to the [Core API](/docs/api/core/) for low level reference
|
||||
documentation.
|
||||
Holos. Refer to the [Core API] for low level reference documentation.
|
||||
|
||||
Holos is a tool built for platform engineers. The Holos authors share three
|
||||
core values which guide our design decisions for the tool.
|
||||
@@ -368,3 +367,4 @@ typically has two Fleets, one for management and one for workloads.
|
||||
[krm]: https://docs.google.com/document/d/1RmHXdLhNbyOWPW_AtnnowaRfGejw-qlKQIuLKQWlwzs/view#heading=h.sa6p0aye4ide
|
||||
[Platform]: ../api/core.md#Platform
|
||||
[BuildPlan]: ../api/core.md#BuildPlan
|
||||
[Core API]: ../api/core.md
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
package generate
|
||||
package cli
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
@@ -14,29 +14,29 @@ import (
|
||||
"github.com/spf13/cobra"
|
||||
)
|
||||
|
||||
// New returns a new generate command.
|
||||
func New(cfg *holos.Config, feature holos.Flagger) *cobra.Command {
|
||||
cmd := command.New("generate")
|
||||
cmd.Aliases = []string{"gen"}
|
||||
cmd.Short = "generate local resources"
|
||||
// New returns a new init command.
|
||||
func newInitCommand(feature holos.Flagger) *cobra.Command {
|
||||
cmd := command.New("init")
|
||||
cmd.Aliases = []string{"initialize", "gen", "generate"}
|
||||
cmd.Short = "initialize platforms and components"
|
||||
cmd.Args = cobra.NoArgs
|
||||
|
||||
cmd.AddCommand(NewPlatform(cfg))
|
||||
cmd.AddCommand(NewComponent(feature))
|
||||
cmd.AddCommand(newInitPlatformCommand())
|
||||
cmd.AddCommand(newInitComponentCommand(feature))
|
||||
|
||||
return cmd
|
||||
}
|
||||
|
||||
func NewPlatform(cfg *holos.Config) *cobra.Command {
|
||||
func newInitPlatformCommand() *cobra.Command {
|
||||
var force bool
|
||||
|
||||
cmd := command.New("platform [flags] PLATFORM")
|
||||
cmd.Short = "generate a platform from an embedded schematic"
|
||||
cmd.Long = fmt.Sprintf("Embedded platforms available to generate:\n\n %s", strings.Join(generate.Platforms(), "\n "))
|
||||
cmd.Example = " holos generate platform k3d"
|
||||
cmd.Short = "initialize a platform from an embedded schematic"
|
||||
cmd.Long = fmt.Sprintf("Available platforms:\n\n %s", strings.Join(generate.Platforms(), "\n "))
|
||||
cmd.Example = " holos init platform v1alpha5"
|
||||
cmd.Args = cobra.ExactArgs(1)
|
||||
|
||||
cmd.Flags().BoolVarP(&force, "force", "", force, "force generation")
|
||||
cmd.Flags().BoolVarP(&force, "force", "", force, "force initialization")
|
||||
|
||||
cmd.RunE = func(cmd *cobra.Command, args []string) error {
|
||||
ctx := cmd.Root().Context()
|
||||
@@ -47,7 +47,7 @@ func NewPlatform(cfg *holos.Config) *cobra.Command {
|
||||
return errors.Wrap(err)
|
||||
}
|
||||
if len(files) > 0 {
|
||||
return errors.Format("could not generate: directory not empty and --force=false")
|
||||
return errors.Format("could not initialize: directory not empty and --force=false")
|
||||
}
|
||||
}
|
||||
|
||||
@@ -63,10 +63,10 @@ func NewPlatform(cfg *holos.Config) *cobra.Command {
|
||||
return cmd
|
||||
}
|
||||
|
||||
// NewComponent returns a command to generate a holos component
|
||||
func NewComponent(feature holos.Flagger) *cobra.Command {
|
||||
// newInitComponentCommand returns a command to generate a holos component
|
||||
func newInitComponentCommand(feature holos.Flagger) *cobra.Command {
|
||||
cmd := command.New("component")
|
||||
cmd.Short = "generate a component from an embedded schematic"
|
||||
cmd.Short = "initialize a component from an embedded schematic"
|
||||
cmd.Hidden = !feature.Flag(holos.GenerateComponentFeature)
|
||||
|
||||
for _, name := range generate.Components("v1alpha3") {
|
||||
@@ -18,7 +18,6 @@ import (
|
||||
"github.com/holos-run/holos/internal/cli/command"
|
||||
"github.com/holos-run/holos/internal/cli/create"
|
||||
"github.com/holos-run/holos/internal/cli/destroy"
|
||||
"github.com/holos-run/holos/internal/cli/generate"
|
||||
"github.com/holos-run/holos/internal/cli/get"
|
||||
"github.com/holos-run/holos/internal/cli/kv"
|
||||
"github.com/holos-run/holos/internal/cli/login"
|
||||
@@ -69,6 +68,11 @@ func New(cfg *holos.Config, feature holos.Flagger) *cobra.Command {
|
||||
rootCmd.PersistentFlags().SortFlags = false
|
||||
rootCmd.PersistentFlags().AddGoFlagSet(cfg.LogFlagSet())
|
||||
|
||||
// Hide the help command
|
||||
rootCmd.SetHelpCommand(&cobra.Command{Hidden: true})
|
||||
rootCmd.PersistentFlags().BoolP("help", "h", false, "Print usage")
|
||||
rootCmd.PersistentFlags().Lookup("help").Hidden = true
|
||||
|
||||
// subcommands
|
||||
rootCmd.AddCommand(build.New(cfg, feature))
|
||||
rootCmd.AddCommand(render.New(cfg, feature))
|
||||
@@ -79,7 +83,7 @@ func New(cfg *holos.Config, feature holos.Flagger) *cobra.Command {
|
||||
rootCmd.AddCommand(login.New(cfg, feature))
|
||||
rootCmd.AddCommand(logout.New(cfg, feature))
|
||||
rootCmd.AddCommand(token.New(cfg, feature))
|
||||
rootCmd.AddCommand(generate.New(cfg, feature))
|
||||
rootCmd.AddCommand(newInitCommand(feature))
|
||||
rootCmd.AddCommand(register.New(cfg, feature))
|
||||
rootCmd.AddCommand(pull.New(cfg, feature))
|
||||
rootCmd.AddCommand(push.New(cfg, feature))
|
||||
|
||||
17407
package-lock.json
generated
@@ -1,5 +1,14 @@
|
||||
{
|
||||
"devDependencies": {
|
||||
"cspell": "^8.10.4"
|
||||
},
|
||||
"dependencies": {
|
||||
"@docusaurus/core": "^3.6.1",
|
||||
"@docusaurus/module-type-aliases": "^3.6.1",
|
||||
"@docusaurus/plugin-client-redirects": "^3.6.1",
|
||||
"@docusaurus/preset-classic": "^3.6.1",
|
||||
"@docusaurus/theme-mermaid": "^3.6.1",
|
||||
"@docusaurus/tsconfig": "^3.6.1",
|
||||
"@docusaurus/types": "^3.6.1"
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1 +1 @@
|
||||
0
|
||||
1
|
||||
|
||||