Merge pull request #97 from kube-hetzner/auto-destroy

Auto destroy LB on terraform destroy

main.tf

@@ -158,3 +158,30 @@ data "hcloud_load_balancer" "traefik" {
 
   depends_on = [null_resource.kustomization]
 }
+
+
+resource "null_resource" "destroy_traefik_loadbalancer" {
+  # this only gets triggered before total destruction of the cluster, but when the necessary elements to run the commands are still available
+  triggers = {
+    kustomization_id = null_resource.kustomization.id
+  }
+
+  # Important when issuing terraform destroy, otherwise the LB will not let the network get deleted
+  provisioner "local-exec" {
+    when       = destroy
+    command    = <<-EOT
+      kubectl -n kube-system delete service traefik --kubeconfig ${path.module}/kubeconfig.yaml
+    EOT
+    on_failure = continue
+  }
+
+  depends_on = [
+    local_file.kubeconfig,
+    null_resource.control_planes[0],
+    hcloud_network_subnet.k3s,
+    hcloud_network.k3s,
+    hcloud_firewall.k3s,
+    hcloud_placement_group.k3s,
+    hcloud_ssh_key.k3s
+  ]
+}

modules/host/locals.tf

@@ -65,7 +65,7 @@ locals {
 rpm --import https://rpm.rancher.io/public.key
 zypper refresh
 zypper --gpg-auto-import-keys install -y https://rpm.rancher.io/k3s/stable/common/microos/noarch/k3s-selinux-0.4-1.sle.noarch.rpm
-udevadm settle
+udevadm settle || true
 EOF
 
 }