[Feature Request]: Terraform Apply should change k3s config.yaml

[TroyKomodo]

Description

When changing a value which would normally change the state of the /etc/rancher/config.yaml after deploy terraform apply returns successfully but the apply does not actually change the state of the servers.

Kube.tf file

locals {
  cluster_ipv4_cidr = "10.42.0.0/16"
}

module "kube-hetzner" {
  providers = {
    hcloud = hcloud
  }

  hcloud_token = var.hcloud_token

  source = "kube-hetzner/kube-hetzner/hcloud"

  ssh_public_key = file("~/.ssh/id_ed25519.pub")
  ssh_private_key = file("~/.ssh/id_ed25519")

  network_region = "eu-central"

  control_plane_nodepools = [
    {
      name        = "control-plane-fsn1",
      server_type = "cpx11",
      location    = "fsn1",
      labels      = [],
      taints      = [],
      count       = 1
    },
    {
      name        = "control-plane-nbg1",
      server_type = "cpx11",
      location    = "nbg1",
      labels      = [],
      taints      = [],
      count       = 1
    },
    {
      name        = "control-plane-hel1",
      server_type = "cpx11",
      location    = "hel1",
      labels      = [],
      taints      = [],
      count       = 1
    }
  ]

  agent_nodepools = [
    {
      name        = "agent-small",
      server_type = "cpx11",
      location    = "fsn1",
      labels      = [],
      taints      = [],
      count       = 1
    },
  ]

  load_balancer_type     = "lb11"
  load_balancer_location = "fsn1"

  autoscaler_nodepools = [
    {
      name        = "autoscaled-medium"
      server_type = "cpx41"
      location    = "fsn1"
      min_nodes   = 1
      max_nodes   = 5
    }
  ]

  etcd_s3_backup = {
    etcd-s3-endpoint            = "xxx.r2.cloudflarestorage.com"
    etcd-s3-access-key          = "xxx"
    etcd-s3-secret-key          = "xxx"
    etcd-s3-bucket              = "xxx"
  }

  control_planes_custom_config = {
    etcd-snapshot-schedule-cron = "0 */6 * * *"
  }

  use_control_plane_lb = "true"

  cni_plugin = "cilium"

  cluster_ipv4_cidr = local.cluster_ipv4_cidr
  
  cilium_values = <<EOT
ipam:
  mode: "cluster-pool"
  operator:
    clusterPoolIPv4PodCIDRList:
      - ${local.cluster_ipv4_cidr}
    clusterPoolIPv4MaskSize: 24
kubeProxyReplacement: strict
MTU: 1450
bpf:
  masquerade: true
EOT

  ingress_controller = "none"
}

provider "hcloud" {
  token = var.hcloud_token
}

terraform {
  required_version = ">= 1.3.3"
  required_providers {
    hcloud = {
      source  = "hetznercloud/hcloud"
      version = ">= 1.39.0"
    }
  }
}

output "kubeconfig" {
  value     = module.kube-hetzner.kubeconfig
  sensitive = true
}

variable "hcloud_token" {
  sensitive = true
}

Screenshots

No response

Platform

Linux

[mysticaltech]

@TroyKomodo That's not implemented yet, but it can be. We have started doing this already for variables like k3s_registries. Please don't hesitate to submit a PR if you want to help out.

[mraerino]

i opened a PoC for this here: #881

it is not perfect yet, but comments would be welcome!

[mysticaltech]

Also see #939

[mysticaltech]

@TroyKomodo This has shipped and is active since v2.3.1.