Merge 6fa7daa21d into a5d641c930

README.md

@@ -54,7 +54,7 @@ Follow those simple steps, and your world's cheapest Kube cluster will be up and
 
 First and foremost, you need to have a Hetzner Cloud account. You can sign up for free [here](https://hetzner.com/cloud/).
 
-Then you'll need to have [terraform](https://learn.hashicorp.com/tutorials/terraform/install-cli),  [kubectl](https://kubernetes.io/docs/tasks/tools/) cli, and [hcloud](<https://github.com/hetznercloud/cli>) the Hetzner cli. The easiest way is to use the [homebrew](https://brew.sh/) package manager to install them (available on Linux, Mac, and Windows Linux Subsystem).
+Then you'll need to have [terraform](https://learn.hashicorp.com/tutorials/terraform/install-cli),  [kubectl](https://kubernetes.io/docs/tasks/tools/) cli and [hcloud](<https://github.com/hetznercloud/cli>) the Hetzner cli. The easiest way is to use the [homebrew](https://brew.sh/) package manager to install them (available on Linux, Mac, and Windows Linux Subsystem).
 
 ```sh
 brew install terraform

init.tf

@@ -80,18 +80,25 @@ resource "null_resource" "kustomization" {
     content = yamlencode({
       apiVersion = "kustomize.config.k8s.io/v1beta1"
       kind       = "Kustomization"
-      resources = concat([
+      resources = concat(
+        [
           "https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/${local.ccm_version}/ccm-networks.yaml",
-        "https://raw.githubusercontent.com/hetznercloud/csi-driver/${local.csi_version}/deploy/kubernetes/hcloud-csi.yml",
           "https://github.com/weaveworks/kured/releases/download/${local.kured_version}/kured-${local.kured_version}-dockerhub.yaml",
           "https://raw.githubusercontent.com/rancher/system-upgrade-controller/master/manifests/system-upgrade-controller.yaml",
-        ], local.is_single_node_cluster ? [] : var.traefik_enabled ? ["traefik_config.yaml"] : []
-      , var.cni_plugin == "calico" ? ["https://projectcalico.docs.tigera.io/manifests/calico.yaml"] : []),
-      patchesStrategicMerge = concat([
+        ],
+        var.disable_hetzner_csi ? [] : ["https://raw.githubusercontent.com/hetznercloud/csi-driver/${local.csi_version}/deploy/kubernetes/hcloud-csi.yml"],
+        var.enable_longhorn ? ["longhorn.yaml"] : [],
+        local.is_single_node_cluster ? [] : var.traefik_enabled ? ["traefik_config.yaml"] : [],
+        var.cni_plugin == "calico" ? ["https://projectcalico.docs.tigera.io/manifests/calico.yaml"] : []
+      ),
+      patchesStrategicMerge = concat(
+        [
           file("${path.module}/kustomize/kured.yaml"),
           file("${path.module}/kustomize/ccm.yaml"),
           file("${path.module}/kustomize/system-upgrade-controller.yaml")
-      ], var.cni_plugin == "calico" ? [file("${path.module}/kustomize/calico.yaml")] : [])
+        ],
+        var.cni_plugin == "calico" ? [file("${path.module}/kustomize/calico.yaml")] : []
+      )
     })
     destination = "/var/post_install/kustomization.yaml"
   }
@@ -122,6 +129,16 @@ resource "null_resource" "kustomization" {
     destination = "/var/post_install/plans.yaml"
   }
 
+  # Upload the Longhorn config
+  provisioner "file" {
+    content = templatefile(
+      "${path.module}/templates/longhorn.yaml.tpl",
+      {
+        disable_hetzner_csi = var.disable_hetzner_csi
+    })
+    destination = "/var/post_install/longhorn.yaml"
+  }
+
   # Deploy secrets, logging is automatically disabled due to sensitive variables
   provisioner "remote-exec" {
     inline = [
@@ -161,6 +178,7 @@ resource "null_resource" "kustomization" {
   }
 
   depends_on = [
-    null_resource.first_control_plane
+    null_resource.first_control_plane,
+    local_sensitive_file.kubeconfig
   ]
 }

locals.tf

@@ -13,7 +13,7 @@ locals {
 
   ccm_version   = var.hetzner_ccm_version != null ? var.hetzner_ccm_version : data.github_release.hetzner_ccm.release_tag
   csi_version   = var.hetzner_csi_version != null ? var.hetzner_csi_version : data.github_release.hetzner_csi.release_tag
-  kured_version = data.github_release.kured.release_tag
+  kured_version = var.kured_version != null ? var.kured_version : data.github_release.kured.release_tag
 
   common_commands_install_k3s = [
     "set -ex",

modules/host/main.tf

@@ -69,7 +69,7 @@ resource "hcloud_server" "server" {
   provisioner "remote-exec" {
     inline = [
       "set -ex",
-      "transactional-update shell <<< 'rpm --import https://rpm.rancher.io/public.key;zypper install -y https://github.com/k3s-io/k3s-selinux/releases/download/v0.5.stable.1/k3s-selinux-0.5-1.sle.noarch.rpm'"
+      "transactional-update shell <<< 'rpm --import https://rpm.rancher.io/public.key; zypper install -y open-iscsi https://github.com/k3s-io/k3s-selinux/releases/download/v0.5.stable.1/k3s-selinux-0.5-1.sle.noarch.rpm'"
     ]
   }
 
@@ -84,6 +84,14 @@ resource "hcloud_server" "server" {
       done
     EOT
   }
+
+  # Enable open-iscsi
+  provisioner "remote-exec" {
+    inline = [
+      "set -ex",
+      "systemctl enable --now iscsid"
+    ]
+  }
 }
 
 resource "hcloud_server_network" "server" {

templates/longhorn.yaml.tpl

@@ -0,0 +1,22 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: longhorn
+---
+apiVersion: helm.cattle.io/v1
+kind: HelmChart
+metadata:
+  name: longhorn
+  namespace: kube-system
+spec:
+  chart: longhorn
+  repo: https://charts.longhorn.io
+  targetNamespace: longhorn
+  valuesContent: |-
+    defaultSettings:
+      defaultDataPath: /var/longhorn
+    persistence:
+      defaultFsType: ext4
+      defaultClassReplicaCount: 2
+      %{ if disable_hetzner_csi ~}defaultClass: true%{ else ~}defaultClass: false%{ endif ~}

terraform.tfvars.example

@@ -103,10 +103,18 @@ load_balancer_location = "fsn1"
 
 ### The following values are entirely optional
 
+# To use local storage on the nodes, you can enable Longhorn, default is "false"
+# enable_longhorn = false
+
+# To disable Hetzner CSI storage, you can set the following to true, default is "false"
+# disable_hetzner_csi = false
+
 # If you want to use a specific Hetzner CCM and CSI version, set them below; otherwise, leave them as-is for the latest versions
 # hetzner_ccm_version = ""
 # hetzner_csi_version = ""
 
+# If you want to specify the Kured version, set it below - otherwise it'll use the latest version available
+# kured_version = ""
 
 # We give you the possibility to use letsencrypt directly with Traefik because it's an easy setup, however it's not optimal,
 # as the free version of Traefik causes a little bit of downtime when when the certificates get renewed. For proper SSL management,

variables.tf

@@ -65,6 +65,12 @@ variable "hetzner_csi_version" {
   description = "Version of Container Storage Interface driver for Hetzner Cloud"
 }
 
+variable "kured_version" {
+  type        = string
+  default     = null
+  description = "Version of Kured"
+}
+
 variable "traefik_enabled" {
   type        = bool
   default     = true
@@ -157,3 +163,15 @@ variable "cni_plugin" {
   default     = "flannel"
   description = "CNI plugin for k3s"
 }
+
+variable "enable_longhorn" {
+  type        = bool
+  default     = false
+  description = "Enable Longhorn"
+}
+
+variable "disable_hetzner_csi" {
+  type        = bool
+  default     = false
+  description = "Disable hetzner csi driver"
+}