mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-11-04 04:08:16 +00:00
Merge pull request #16328 from erictune/scratch-addons
Auto commit by PR queue bot
This commit is contained in:
k8s-merge-robot
@@ -33,6 +33,31 @@ Documentation for other releases can be found at
|
|||||||
|
|
||||||
# Kubernetes Cluster Admin Guide: Cluster Components
|
# Kubernetes Cluster Admin Guide: Cluster Components
|
||||||
|
|
||||||
|
**Table of Contents**
|
||||||
|
|
||||||
|
<!-- BEGIN MUNGE: GENERATED_TOC -->
|
||||||
|
|
||||||
|
- [Kubernetes Cluster Admin Guide: Cluster Components](#kubernetes-cluster-admin-guide-cluster-components)
|
||||||
|
- [Master Components](#master-components)
|
||||||
|
- [kube-apiserver](#kube-apiserver)
|
||||||
|
- [etcd](#etcd)
|
||||||
|
- [kube-controller-manager](#kube-controller-manager)
|
||||||
|
- [kube-scheduler](#kube-scheduler)
|
||||||
|
- [addons](#addons)
|
||||||
|
- [DNS](#dns)
|
||||||
|
- [User interface](#user-interface)
|
||||||
|
- [Container Resource Monitoring](#container-resource-monitoring)
|
||||||
|
- [Cluster-level Logging](#cluster-level-logging)
|
||||||
|
- [Node components](#node-components)
|
||||||
|
- [kubelet](#kubelet)
|
||||||
|
- [kube-proxy](#kube-proxy)
|
||||||
|
- [docker](#docker)
|
||||||
|
- [rkt](#rkt)
|
||||||
|
- [monit](#monit)
|
||||||
|
- [fluentd](#fluentd)
|
||||||
|
|
||||||
|
<!-- END MUNGE: GENERATED_TOC -->
|
||||||
|
|
||||||
This document outlines the various binary components that need to run to
|
This document outlines the various binary components that need to run to
|
||||||
deliver a functioning Kubernetes cluster.
|
deliver a functioning Kubernetes cluster.
|
||||||
|
|
||||||
@@ -101,14 +126,38 @@ to create these pods and services does run on the master VM. See:
|
|||||||
|
|
||||||
Addon objects are created in the "kube-system" namespace.
|
Addon objects are created in the "kube-system" namespace.
|
||||||
|
|
||||||
Example addons are:
|
#### DNS
|
||||||
* [DNS](http://releases.k8s.io/HEAD/cluster/addons/dns/) provides cluster local DNS.
|
|
||||||
* [kube-ui](http://releases.k8s.io/HEAD/cluster/addons/kube-ui/) provides a graphical UI for the
|
While the other addons are not strictly required, all Kubernetes
|
||||||
cluster.
|
clusters should have [cluster DNS](dns.md), as many examples rely on it.
|
||||||
* [fluentd-elasticsearch](http://releases.k8s.io/HEAD/cluster/addons/fluentd-elasticsearch/) provides
|
|
||||||
log storage. Also see the [gcp version](http://releases.k8s.io/HEAD/cluster/addons/fluentd-gcp/).
|
Cluster DNS is a DNS server, in addition to the other DNS server(s) in your
|
||||||
* [cluster-monitoring](http://releases.k8s.io/HEAD/cluster/addons/cluster-monitoring/) provides
|
environment, which serves DNS records for Kubernetes services.
|
||||||
monitoring for the cluster.
|
|
||||||
|
Containers started by Kubernetes automatically include this DNS server
|
||||||
|
in their DNS searches.
|
||||||
|
|
||||||
|
#### User interface
|
||||||
|
|
||||||
|
The kube-ui provides a read-only overview of the cluster state. Access
|
||||||
|
[the UI using kubectl proxy](../user-guide/connecting-to-applications-proxy.md#connecting-to-the-kube-ui-service-from-your-local-workstation)
|
||||||
|
|
||||||
|
#### Container Resource Monitoring
|
||||||
|
|
||||||
|
[Container Resource Monitoring](../user-guide/monitoring.md) records generic time-series metrics
|
||||||
|
about containers in a central database, and provides a UI for browsing that data.
|
||||||
|
|
||||||
|
#### Cluster-level Logging
|
||||||
|
|
||||||
|
[Container Logging](../user-guide/monitoring.md) saves container logs
|
||||||
|
to a central log store with search/browsing interface. There are two
|
||||||
|
implementations:
|
||||||
|
|
||||||
|
* [Cluster-level logging to Google Cloud Logging](
|
||||||
|
docs/user-guide/logging.md#cluster-level-logging-to-google-cloud-logging)
|
||||||
|
|
||||||
|
* [Cluster-level Logging with Elasticsearch and Kibana](
|
||||||
|
docs/user-guide/logging.md#cluster-level-logging-with-elasticsearch-and-kibana)
|
||||||
|
|
||||||
## Node components
|
## Node components
|
||||||
|
|
||||||
@@ -146,6 +195,9 @@ network rules on the host and performing connection forwarding.
|
|||||||
`monit` is a lightweight process babysitting system for keeping kubelet and docker
|
`monit` is a lightweight process babysitting system for keeping kubelet and docker
|
||||||
running.
|
running.
|
||||||
|
|
||||||
|
### fluentd
|
||||||
|
|
||||||
|
`fluentd` is a daemon which helps provide [cluster-level logging](#cluster-level-logging).
|
||||||
|
|
||||||
<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
|
<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
|
||||||
[]()
|
[]()
|
||||||
|
|||||||
@@ -77,9 +77,7 @@ steps that existing cluster setup scripts are making.
|
|||||||
- [Scheduler pod template](#scheduler-pod-template)
|
- [Scheduler pod template](#scheduler-pod-template)
|
||||||
- [Controller Manager Template](#controller-manager-template)
|
- [Controller Manager Template](#controller-manager-template)
|
||||||
- [Starting and Verifying Apiserver, Scheduler, and Controller Manager](#starting-and-verifying-apiserver-scheduler-and-controller-manager)
|
- [Starting and Verifying Apiserver, Scheduler, and Controller Manager](#starting-and-verifying-apiserver-scheduler-and-controller-manager)
|
||||||
- [Logging](#logging)
|
- [Starting Cluster Services](#starting-cluster-services)
|
||||||
- [Monitoring](#monitoring)
|
|
||||||
- [DNS](#dns)
|
|
||||||
- [Troubleshooting](#troubleshooting)
|
- [Troubleshooting](#troubleshooting)
|
||||||
- [Running validate-cluster](#running-validate-cluster)
|
- [Running validate-cluster](#running-validate-cluster)
|
||||||
- [Inspect pods and services](#inspect-pods-and-services)
|
- [Inspect pods and services](#inspect-pods-and-services)
|
||||||
@@ -433,7 +431,7 @@ Arguments to consider:
|
|||||||
- Otherwise, if taking the firewall-based security approach
|
- Otherwise, if taking the firewall-based security approach
|
||||||
- `--api-servers=http://$MASTER_IP`
|
- `--api-servers=http://$MASTER_IP`
|
||||||
- `--config=/etc/kubernetes/manifests`
|
- `--config=/etc/kubernetes/manifests`
|
||||||
- `--cluster-dns=` to the address of the DNS server you will setup (see [Starting Addons](#starting-addons).)
|
- `--cluster-dns=` to the address of the DNS server you will setup (see [Starting Cluster Services](#starting-cluster-services).)
|
||||||
- `--cluster-domain=` to the dns domain prefix to use for cluster DNS addresses.
|
- `--cluster-domain=` to the dns domain prefix to use for cluster DNS addresses.
|
||||||
- `--docker-root=`
|
- `--docker-root=`
|
||||||
- `--root-dir=`
|
- `--root-dir=`
|
||||||
@@ -836,17 +834,30 @@ If you have selected the `--register-node=true` option for kubelets, they will n
|
|||||||
You should soon be able to see all your nodes by running the `kubectl get nodes` command.
|
You should soon be able to see all your nodes by running the `kubectl get nodes` command.
|
||||||
Otherwise, you will need to manually create node objects.
|
Otherwise, you will need to manually create node objects.
|
||||||
|
|
||||||
### Logging
|
### Starting Cluster Services
|
||||||
|
|
||||||
**TODO** talk about starting Logging.
|
You will want to complete your Kubernetes clusters by adding cluster-wide
|
||||||
|
services. These are sometimes called *addons*, and [an overview
|
||||||
|
of their purpose is in the admin guide](
|
||||||
|
../../docs/admin/cluster-components.md#addons).
|
||||||
|
|
||||||
### Monitoring
|
Notes for setting up each cluster service are given below:
|
||||||
|
|
||||||
**TODO** talk about starting Monitoring.
|
* Cluster DNS:
|
||||||
|
* required for many kubernetes examples
|
||||||
### DNS
|
* [Setup instructions](http://releases.k8s.io/HEAD/cluster/addons/dns/)
|
||||||
|
* [Admin Guide](../admin/dns.md)
|
||||||
**TODO** talk about starting DNS.
|
* Cluster-level Logging
|
||||||
|
* Multiple implementations with different storage backends and UIs.
|
||||||
|
* [Elasticsearch Backend Setup Instructions](http://releases.k8s.io/HEAD/cluster/addons/fluentd-elasticsearch/)
|
||||||
|
* [Google Cloud Logging Backend Setup Instructions](http://releases.k8s.io/HEAD/cluster/addons/fluentd-gcp/).
|
||||||
|
* Both require running fluentd on each node.
|
||||||
|
* [User Guide](../user-guide/logging.md)
|
||||||
|
* Container Resource Monitoring
|
||||||
|
* [Setup instructions](http://releases.k8s.io/HEAD/cluster/addons/cluster-monitoring/)
|
||||||
|
* GUI
|
||||||
|
* [Setup instructions](http://releases.k8s.io/HEAD/cluster/addons/kube-ui/)
|
||||||
|
cluster.
|
||||||
|
|
||||||
## Troubleshooting
|
## Troubleshooting
|
||||||
|
|
||||||
|
|||||||
@@ -33,6 +33,14 @@ Documentation for other releases can be found at
|
|||||||
|
|
||||||
# Connecting to applications: kubectl proxy and apiserver proxy
|
# Connecting to applications: kubectl proxy and apiserver proxy
|
||||||
|
|
||||||
|
<!-- BEGIN MUNGE: GENERATED_TOC -->
|
||||||
|
|
||||||
|
- [Connecting to applications: kubectl proxy and apiserver proxy](#connecting-to-applications-kubectl-proxy-and-apiserver-proxy)
|
||||||
|
- [Getting the apiserver proxy URL of kube-ui](#getting-the-apiserver-proxy-url-of-kube-ui)
|
||||||
|
- [Connecting to the kube-ui service from your local workstation](#connecting-to-the-kube-ui-service-from-your-local-workstation)
|
||||||
|
|
||||||
|
<!-- END MUNGE: GENERATED_TOC -->
|
||||||
|
|
||||||
You have seen the [basics](accessing-the-cluster.md) about `kubectl proxy` and `apiserver proxy`. This guide shows how to use them together to access a service([kube-ui](ui.md)) running on the Kubernetes cluster from your workstation.
|
You have seen the [basics](accessing-the-cluster.md) about `kubectl proxy` and `apiserver proxy`. This guide shows how to use them together to access a service([kube-ui](ui.md)) running on the Kubernetes cluster from your workstation.
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
@@ -33,6 +33,20 @@ Documentation for other releases can be found at
|
|||||||
|
|
||||||
# Logging
|
# Logging
|
||||||
|
|
||||||
|
**Table of Contents**
|
||||||
|
|
||||||
|
<!-- BEGIN MUNGE: GENERATED_TOC -->
|
||||||
|
|
||||||
|
- [Logging](#logging)
|
||||||
|
- [Logging by Kubernetes Components](#logging-by-kubernetes-components)
|
||||||
|
- [Examining the logs of running containers](#examining-the-logs-of-running-containers)
|
||||||
|
- [Cluster level logging to Google Cloud Logging](#cluster-level-logging-to-google-cloud-logging)
|
||||||
|
- [Cluster level logging with Elasticsearch and Kibana](#cluster-level-logging-with-elasticsearch-and-kibana)
|
||||||
|
- [Ingesting Application Log Files](#ingesting-application-log-files)
|
||||||
|
- [Known issues](#known-issues)
|
||||||
|
|
||||||
|
<!-- END MUNGE: GENERATED_TOC -->
|
||||||
|
|
||||||
## Logging by Kubernetes Components
|
## Logging by Kubernetes Components
|
||||||
|
|
||||||
Kubernetes components, such as kubelet and apiserver, use the [glog](https://godoc.org/github.com/golang/glog) logging library. Developer conventions for logging severity are described in [docs/devel/logging.md](../devel/logging.md).
|
Kubernetes components, such as kubelet and apiserver, use the [glog](https://godoc.org/github.com/golang/glog) logging library. Developer conventions for logging severity are described in [docs/devel/logging.md](../devel/logging.md).
|
||||||
|
|||||||
Reference in New Issue
Block a user