mirror of
https://github.com/outbackdingo/terraform-render-bootstrap.git
synced 2026-01-27 10:20:45 +00:00
0d3f17393e
* Change the default Pod CIDR from 10.2.0.0/16 to 10.20.0.0/14 (10.20.0.0 - 10.23.255.255) to support 1024 nodes by default * Most CNI providers divide the Pod CIDR so that each node has a /24 to allocate to local pods (256). The previous `10.2.0.0/16` default only fits 256 /24's so 256 nodes were supported without customizing the pod_cidr
terraform-render-bootstrap
terraform-render-bootstrap is a Terraform module that renders TLS certificates, static pods, and manifests for bootstrapping a Kubernetes cluster.
Audience
terraform-render-bootstrap is a low-level component of the Typhoon Kubernetes distribution. Use Typhoon modules to create and manage Kubernetes clusters across supported platforms. Use the bootstrap module if you'd like to customize a Kubernetes control plane or build your own distribution.
Usage
Use the module to declare bootstrap assets. Check variables.tf for options and terraform.tfvars.example for examples.
module "bootstrap" {
source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=SHA"
cluster_name = "example"
api_servers = ["node1.example.com"]
etcd_servers = ["node1.example.com"]
}
Generate assets in Terraform state.
terraform init
terraform plan
terraform apply
To inspect and write assets locally (e.g. debugging) use the assets_dist Terraform output.
resource local_file "assets" {
for_each = module.bootstrap.assets_dist
filename = "some-assets/${each.key}"
content = each.value
}