hcloud-talos/terraform-hcloud-talos

Error complains about wrong kubernetes version 1.20.0

malagant opened this issue · 4 comments

malagant commented 
Plan: 24 to add, 0 to change, 0 to destroy.
╷
│ Error: chart requires kubeVersion: >= 1.21.0-0 which is incompatible with Kubernetes v1.20.0
│
│   with module.talos.data.helm_template.cilium_default[0],
│   on .terraform/modules/talos/manifest_cilium.tf line 1, in data "helm_template" "cilium_default":
│    1: data "helm_template" "cilium_default" {
│
╵

I created a main.tf file with the following content and did a terraform init and terraform plan with the following content:

module "talos" {
  source  = "hcloud-talos/talos/hcloud"
  version = "2.8.3"

  talos_version = "v1.7.5" # The version of talos features to use in generated machine configurations

  hcloud_token = "BpP182jC8t1exhD0f9ZTS2V4HeuIQg0AwtLb2bke1exhD0f9ZTS2V4HeuIQG7qh65bHz9X7"

  cluster_name     = "heartcoded.io"
  cluster_domain   = "cluster.heartcoded.io.local"
  cluster_api_host = "kube.heartcoded.io"

  # If true, the current IP address will be used as the source for the firewall rules.
  # ATTENTION: to determine the current IP, a request to a public service (https://ipv4.icanhazip.com) is made.
  firewall_use_current_ip = false

  datacenter_name = "fsn1-dc14"

  kubernetes_version = "1.29.7"

  control_plane_count       = 3
  control_plane_server_type = "cax11"

  worker_count       = 3
  worker_server_type = "cax21"
}

I changed the token for opening this issue ;)

Any hint for me where this error might come from?

mrclrchtr commented

I'm not on the PC at the moment so I can't analyze it. I will be back next week. But I could imagine that it is related to cilium versions conflict.

That's something I need to take a closer look at anyway... The latest kubernetes version requires cilium 1.16.0.

It is possible to customize the cilium version via parameter.

mrclrchtr commented

Adding the following no longer throws the error:

module "talos" {
  ...
  cilium_version     = "1.15.7"
}

The problem is:
In this module cilium is used with the latest version. This is not a good idea, because an error like this can occur.

Version 1.16.0 was recently released and is not compatible with k8s 1.29.7.

Cilium must always be used in combination with a suitable Kubernetes version: https://docs.cilium.io/en/stable/network/kubernetes/compatibility/

Follow up tasks:

  • Change from latest to explicit cilium version
  • Add note on compatibility of k8s and cilium in documentation
mrclrchtr commented

I was wrong: It is not directly because of cilium... but it seems that in version 1.16.0 a new check of helm is used. I can't say exactly how it works, but there is the possibility to specify a kubernetes version in the terraform resource helm_template. This solves the problem. I make sure that from now on a default value is always set in the version.

mrclrchtr commented

🎉 This issue has been resolved in version 2.8.10 🎉

The release is available on GitHub release

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