[Bug]: Not able to use dedicated servers FSN1

[bartvanvliet]

Description

CCX13 servers unavailable in FSN1 despite UI showing availability

CCX13 servers in FSN1 location are shown as available in Hetzner Cloud UI (see screenshot), but when attempting to deploy via kube-hetzner, the API returns resource unavailability errors. Deployment works successfully when using HEL1 location instead.

Config that fails:

control_plane_nodepools = [
  {
    name        = "elastic-control-plane-fsn1",
    server_type = "ccx13",
    location    = "fsn1",
    count       = 3
  }
]

Error received:

Error: we are unable to provision servers for this location, try with a different location or try later (resource_unavailable)

Working solution:
Change location to hel1 for nodepools and load balancer - confirmed working with same CCX13 server type.

Kube.tf file

locals {
  hcloud_token = "REDACTED_API_TOKEN"
}

module "kube-hetzner" {
  providers = {
    hcloud = hcloud
  }
  hcloud_token = var.hcloud_token != "" ? var.hcloud_token : local.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        = "elastic-control-plane-fsn1",
      server_type = "ccx13",
      location    = "fsn1",
      labels      = [],
      taints      = [],
      count       = 3
    },
  ]

  agent_nodepools = [
    {
      name        = "fsn1-elastic-agent-large",
      server_type = "ccx13",
      location    = "fsn1",
      labels      = [],
      taints      = [],
      count       = 3
    },
  ]

  load_balancer_type     = "lb11"
  load_balancer_location = "fsn1"

  # firewall_kube_api_source = ["REDACTED_IP_RANGE/24"]

  dns_servers = [
    "1.1.1.1",
    "8.8.8.8", 
    "2606:4700:4700::1111",
  ]

  use_control_plane_lb = true
}

provider "hcloud" {
  token = var.hcloud_token != "" ? var.hcloud_token : local.hcloud_token
}

terraform {
  required_version = ">= 1.5.0"
  required_providers {
    hcloud = {
      source  = "hetznercloud/hcloud"
      version = ">= 1.49.1"
    }
  }
}

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

variable "hcloud_token" {
  sensitive = true
  default   = ""
}

Screenshots

Platform

Mac

[air3ijai]

Which result do you get via hcloud?

# Authenticate
export HCLOUD_TOKEN="<API Token>"

# List Datacenters
hcloud datacenter list

# List Server Types
hcloud server-type list

# List images
hcloud image list

# Create a server
hcloud server create --datacenter fsn1-dc14 --type ccx33 --image ubuntu-24.04 --name fsn1-ccx33-ubuntu

Just did an experiment and it shows that availability shown on the Hetzner is not necessary reflect instances availability.

Server type ccx23 and ccx33 is not available, but I was able to run servers, but not ccx43 and got an error

hcloud: error during placement (resource_unavailable, 8cf3b34cd58bf6ab)

[air3ijai]

And we also can use hcloud_server resource to run a server

resource "hcloud_server" "ubuntu" {
  name        = "fsn1-ccx43-ubuntu"
  datacenter  = "fsn1-dc14"
  image       = "ubuntu-24.04"
  server_type = "ccx43"
}

terraform {
  required_providers {
    hcloud = {
      source  = "hetznercloud/hcloud"
    }
  }
}