feat: switch to litestream backup

configs/cp/k3s-flatcar.yaml

@@ -27,7 +27,6 @@ systemd:
         Wants = network-online.target
         After = network.target network-online.target litestream.service
         ConditionPathExists=/opt/k3s-install.sh
-        ConditionPathExists=/mnt/HC_Volume_${volume_id}
         ConditionPathExists=!/opt/k3s/bin/k3s
 
         [Service]
@@ -48,7 +47,7 @@ systemd:
         Environment="K3S_TOKEN=${k3s_token}"
         Environment="INSTALL_K3S_VERSION=${k3s_version}"
         Environment="INSTALL_K3S_BIN_DIR=/opt/k3s"
-        Environment="INSTALL_K3S_EXEC=server --data-dir /mnt/HC_Volume_${volume_id}/k3s --advertise-address 172.23.2.10 --node-ip ${node_ip} --node-taint=node-type=k3s-controlplane:NoSchedule %{for san in k3s_sans }--tls-san='${san}' %{endfor} --disable-cloud-controller --disable servicelb --kubelet-arg=cloud-provider=external"
+        Environment="INSTALL_K3S_EXEC=server --data-dir /var/lib/rancher/k3s --advertise-address 172.23.2.10 --node-ip ${node_ip} --node-taint=node-type=k3s-controlplane:NoSchedule %{for san in k3s_sans }--tls-san='${san}' %{endfor} --disable-cloud-controller --disable servicelb --kubelet-arg=cloud-provider=external"
         ExecStart=/usr/bin/sh -c "/opt/k3s-install.sh"
 
         [Install]

configs/cp/litestream.yml

@@ -4,10 +4,11 @@ secret-access-key: ${secretKey}
 dbs:
   - path: /var/lib/rancher/k3s/server/db/state.db
     replicas:
-      - name: Garage
+      - name: Hcloud
         type: s3
+        path: litestream/k3s
         endpoint: ${endpoint}
-        bucket: k3s
+        bucket: 1661580-backup
-        region: hel1
+        region: auto
-        retention: 24h
+        retention: 4h
         snapshot-interval: 15m

k8s_control_plane.tf

@@ -11,14 +11,6 @@ resource "null_resource" "control_plane_generation" {
   }
 }
 
-resource "hcloud_volume" "cp-k3s-storage" {
-  for_each          = var.k3s_control_plane
-  name              = "${each.key}-k3s-storage"
-  size              = 15
-  format            = "ext4"
-  delete_protection = true
-}
-
 resource "hcloud_server" "control-plane" {
   for_each    = var.k3s_control_plane
   name        = each.key
@@ -96,13 +88,6 @@ resource "hcloud_server" "control-plane" {
   }
 }
 
-resource "hcloud_volume_attachment" "cp-k3s-storage" {
-  for_each  = var.k3s_control_plane
-  volume_id = hcloud_volume.cp-k3s-storage[each.key].id
-  server_id = hcloud_server.control-plane[each.key].id
-  automount = true
-}
-
 resource "cloudflare_record" "cp-host-ipv4" {
   for_each = var.k3s_control_plane
 
@@ -147,7 +132,6 @@ data "ct_config" "machine-ignitions-cp" {
       "node_ip"     = "${each.value.private_ip}"
       "k3s_version" = "${var.control_plane_k3s_version}",
       "k3s_sans"    = var.k3s_sans,
-      "volume_id"   = hcloud_volume.cp-k3s-storage[each.key].id
     }
   )
   snippets = [

k8s_flatcar_machines.tf

@@ -136,7 +136,7 @@ resource "null_resource" "machine-drainable" {
   provisioner "local-exec" {
     when       = destroy
     on_failure = continue
-    command    = "kubectl drain --delete-emptydir-data=true --ignore-daemonsets=true ${each.key}"
+    command    = "kubectl drain --delete-emptydir-data=true --ignore-daemonsets=true --disable-eviction ${each.key}"
   }
 }
 

vars.tf

@@ -39,12 +39,12 @@ variable "litestream_version" {
 
 variable "control_plane_k3s_version" {
   type    = string
-  default = "v1.30.4+k3s1"
+  default = "v1.30.5+k3s1"
 }
 
 variable "worker_k3s_version" {
   type    = string
-  default = "v1.30.4+k3s1"
+  default = "v1.30.5+k3s1"
 }
 
 variable "k3s_sans" {