typhoon/aws/flatcar-linux/kubernetes/bootstrap.tf

# Kubernetes assets (kubeconfig, manifests)
module "bootstrap" {
  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=1ddecb1cef65c9715ed66b6c335634bc51f59613"

  cluster_name          = var.cluster_name
  api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
  etcd_servers          = aws_route53_record.etcds.*.fqdn
  networking            = var.networking
  network_mtu           = var.network_mtu
  pod_cidr              = var.pod_cidr
  service_cidr          = var.service_cidr
  daemonset_tolerations = var.daemonset_tolerations
  components            = var.components
}
Update CHANGES for control plane static pod switch * Remove old references to bootkube / self-hosted 2019-09-07 22:38:51 +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" {`
Use Cilium kube-proxy replacement when Cilium CNI is used * When using the Cilium component, disable bootstrapping the kube-proxy DaemonSet. Instead, configure Cilium to provide its kube-proxy replacement with BPF * Update the self-managed Cilium component to use kube-proxy replacement as well 2024-08-23 16:18:42 +02:00			`source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=1ddecb1cef65c9715ed66b6c335634bc51f59613"`
Add dghubble/pegasus AWS Kubernetes Terraform module 2017-09-18 06:40:33 +02:00
Migrate AWS 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 AWS tutorial and worker pools documentation * Define Terraform and plugin version requirements in versions.tf * Require aws ~> 2.7 to support Terraform v0.12 * Require ct ~> 0.3.2 to support Terraform v0.12 2019-05-28 05:42:48 +02:00			`cluster_name = var.cluster_name`
			`api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]`
			`etcd_servers = aws_route53_record.etcds.*.fqdn`
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 AWS 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 AWS tutorial and worker pools documentation * Define Terraform and plugin version requirements in versions.tf * Require aws ~> 2.7 to support Terraform v0.12 * Require ct ~> 0.3.2 to support Terraform v0.12 2019-05-28 05:42:48 +02:00			`network_mtu = var.network_mtu`
			`pod_cidr = var.pod_cidr`
			`service_cidr = var.service_cidr`
Allow custom initial node taints on worker pool nodes * Add `node_taints` variable to worker modules to set custom initial node taints on cloud platforms that support auto-scaling worker pools of heterogeneous nodes (i.e. AWS, Azure, GCP) * Worker pools could use custom `node_labels` to allowed workloads to select among differentiated nodes, while custom `node_taints` allows a worker pool's nodes to be tainted as special to prevent scheduling, except by workloads that explicitly tolerate the taint * Expose `daemonset_tolerations` in AWS, Azure, and GCP kubernetes cluster modules, to determine whether `kube-system` components should tolerate the custom taint (advanced use covered in docs) Rel: #550, #663 Closes #429 2021-04-11 21:08:56 +02:00			`daemonset_tolerations = var.daemonset_tolerations`
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 dghubble/pegasus AWS Kubernetes Terraform module 2017-09-18 06:40:33 +02:00			`}`
Migrate AWS 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 AWS tutorial and worker pools documentation * Define Terraform and plugin version requirements in versions.tf * Require aws ~> 2.7 to support Terraform v0.12 * Require ct ~> 0.3.2 to support Terraform v0.12 2019-05-28 05:42:48 +02:00