typhoon/bare-metal/flatcar-linux/kubernetes/bootstrap.tf

# Kubernetes assets (kubeconfig, manifests)
module "bootstrap" {
  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8b6a3a4c0dacdc4c2eee22aa302ba5d49fc688ac"

  cluster_name                    = var.cluster_name
  api_servers                     = [var.k8s_domain_name]
  etcd_servers                    = var.controllers.*.domain
  networking                      = var.networking
  network_mtu                     = var.network_mtu
  network_ip_autodetection_method = var.network_ip_autodetection_method
  pod_cidr                        = var.pod_cidr
  service_cidr                    = var.service_cidr
  components                      = var.components
}
Migrate Container Linux bare-metal to static pod control plane * Run a kube-apiserver, kube-scheduler, and kube-controller-manager static pod on each controller node. Previously, kube-apiserver was self-hosted as a DaemonSet across controllers and kube-scheduler and kube-controller-manager were a Deployment (with 2 or controller_count many replicas). * Remove bootkube bootstrap and pivot to self-hosted * Remove pod-checkpointer manifests (no longer needed) 2019-09-05 07:05:29 +02:00			`# Kubernetes assets (kubeconfig, manifests)`
Rename bootkube modules to bootstrap * Rename render module from bootkube to bootstrap. Avoid confusion with the kubernetes-incubator/bootkube tool since it is no longer used * Use the poseidon/terraform-render-bootstrap Terraform module (formerly poseidon/terraform-render-bootkube) * https://github.com/poseidon/terraform-render-bootkube/pull/149 2019-09-15 01:24:32 +02:00			`module "bootstrap" {`
Update Kubernetes from v1.30.3 to v1.30.4 * Update Cilium from v1.16.0 to v1.16.1 2024-08-16 17:25:48 +02:00			`source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=8b6a3a4c0dacdc4c2eee22aa302ba5d49fc688ac"`
Add bare-metal support for Container Linux with Matchbox 2017-07-25 08:16:34 +02:00
Migrate bare-metal module Terraform v0.11 to v0.12 * Replace v0.11 bracket type hints with Terraform v0.12 list expressions * Use expression syntax instead of interpolated strings, where suggested * Update bare-metal tutorial * Define `clc_snippets` type constraint map(list(string)) * Define Terraform and plugin version requirements in versions.tf * Require matchbox ~> 0.3.0 to support Terraform v0.12 * Require ct ~> 0.3.2 to support Terraform v0.12 2019-05-29 04:19:23 +02:00			`cluster_name = var.cluster_name`
			`api_servers = [var.k8s_domain_name]`
Introduce list of detail objects for bare-metal machines * Define bare-metal `controllers` and `workers` as a complex type list(object{name=string, mac=string, domain=string}) to allow clusters with many machines to be defined more cleanly * Remove `controller_names` list variable * Remove `controller_macs` list variable * Remove `controller_domains` list variable * Remove `worker_names` list variable * Remove `worker_macs` list variable * Remove `worker_domains` list variable 2019-10-06 21:57:15 +02:00			`etcd_servers = var.controllers.*.domain`
Introduce the component system for managing pre-installed addons * Previously: Typhoon provisions clusters with kube-system components like CoreDNS, kube-proxy, and a chosen CNI provider (among flannel, Calico, or Cilium) pre-installed. This is convenient since clusters come with "batteries included". But it also means upgrading these components is generally done in lock-step, by upgrading to a new Typhoon / Kubernetes release * It can be valuable to manage these components with a separate plan/apply process or through automations and deploy systems. For example, this allows managing CoreDNS separately from the cluster's lifecycle. * These "components" will continue to be pre-installed by default, but a new `components` variable allows them to be disabled and managed as "addons", components you apply after cluster creation and manage on a rolling basis. For some of these, we may provide Terraform modules to aide in managing these components. ``` module "cluster" { # defaults components = { enable = true coredns = { enable = true } kube_proxy = { enable = true } # Only the CNI set in var.networking will be installed flannel = { enable = true } calico = { enable = true } cilium = { enable = true } } } ``` An earlier variable `install_container_networking = true/false` has been removed, since it can now be achieved with this more extensible and general components mechanism by setting the chosen networking provider enable field to false. 2024-05-19 00:05:33 +02:00			`networking = var.networking`
Migrate bare-metal module Terraform v0.11 to v0.12 * Replace v0.11 bracket type hints with Terraform v0.12 list expressions * Use expression syntax instead of interpolated strings, where suggested * Update bare-metal tutorial * Define `clc_snippets` type constraint map(list(string)) * Define Terraform and plugin version requirements in versions.tf * Require matchbox ~> 0.3.0 to support Terraform v0.12 * Require ct ~> 0.3.2 to support Terraform v0.12 2019-05-29 04:19:23 +02:00			`network_mtu = var.network_mtu`
			`network_ip_autodetection_method = var.network_ip_autodetection_method`
			`pod_cidr = var.pod_cidr`
			`service_cidr = var.service_cidr`
Allow CoreDNS and kube-proxy to be optional components * Allow for more minimal base cluster setups, that manage CoreDNS or kube-proxy as applications, with rolling updates, or deploy systems. Or in the case of kube-proxy, its becoming more common to not install it and instead use Cilium * Add a `components` pass-through variable to configure pre-installed components like kube-proxy and CoreDNS. These components can be disabled (individually or together) to allow for managing components with separate plan/apply processes or automations * terraform-render-bootstrap manifest assets are now structured as manifests/{coredns,kube-proxy,network} so adapt the controller layout scripts accordingly * This is similar to some changes in v1.29.2 that allowed for the container networking provider manifests to be skipped Related: https://github.com/poseidon/typhoon/pull/1419, https://github.com/poseidon/typhoon/pull/1421 2024-05-13 06:03:40 +02:00			`components = var.components`
Add bare-metal support for Container Linux with Matchbox 2017-07-25 08:16:34 +02:00			`}`
Migrate bare-metal module Terraform v0.11 to v0.12 * Replace v0.11 bracket type hints with Terraform v0.12 list expressions * Use expression syntax instead of interpolated strings, where suggested * Update bare-metal tutorial * Define `clc_snippets` type constraint map(list(string)) * Define Terraform and plugin version requirements in versions.tf * Require matchbox ~> 0.3.0 to support Terraform v0.12 * Require ct ~> 0.3.2 to support Terraform v0.12 2019-05-29 04:19:23 +02:00