Remove the requirement of Helm, and use the K3s HelmChart CRD installation method instead

This commit is contained in:
Michael Karbowiak 2022-05-02 22:47:50 +02:00
parent 547ca6d29b
commit 6fa7daa21d
5 changed files with 35 additions and 46 deletions

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@ -54,13 +54,12 @@ 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, [helm](<https://github.com/helm/helm>) Helm 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
brew install kubectl
brew install hcloud
brew install helm
```

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@ -1,22 +0,0 @@
---
helmDefaults:
timeout: 3600
wait: true
force: false
atomic: true
repositories:
- name: longhorn
url: https://charts.longhorn.io
releases:
- name: longhorn
namespace: longhorn
chart: longhorn/longhorn
values:
- persistence:
defaultClass: {{ requiredEnv "HETZNER_CSI_DISABLED" }}
defaultFsType: ext4
defaultClassReplicaCount: 2
- defaultSettings:
defaultDataPath: /var/longhorn

32
init.tf
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@ -87,6 +87,7 @@ resource "null_resource" "kustomization" {
"https://raw.githubusercontent.com/rancher/system-upgrade-controller/master/manifests/system-upgrade-controller.yaml",
],
var.disable_hetzner_csi ? [] : ["https://raw.githubusercontent.com/hetznercloud/csi-driver/${local.csi_version}/deploy/kubernetes/hcloud-csi.yml"],
var.enable_longhorn ? ["longhorn.yaml"] : [],
local.is_single_node_cluster ? [] : var.traefik_enabled ? ["traefik_config.yaml"] : [],
var.cni_plugin == "calico" ? ["https://projectcalico.docs.tigera.io/manifests/calico.yaml"] : []
),
@ -128,6 +129,16 @@ resource "null_resource" "kustomization" {
destination = "/var/post_install/plans.yaml"
}
# Upload the Longhorn config
provisioner "file" {
content = templatefile(
"${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 = [
@ -171,24 +182,3 @@ resource "null_resource" "kustomization" {
local_sensitive_file.kubeconfig
]
}
resource "null_resource" "longhorn" {
# If longhorn isn't enabled, we don't want any Helm resources
count = var.enable_longhorn ? 1 : 0
# Install Helm charts
provisioner "local-exec" {
when = create
command = <<-EOT
export KUBECONFIG=$(readlink -f ${path.module}/kubeconfig.yaml)
export HETZNER_CSI_DISABLED=${var.disable_hetzner_csi ? "true" : "false"}
helmfile -f ${path.module}/helm/longhorn.yaml apply
EOT
on_failure = continue
}
depends_on = [
null_resource.first_control_plane,
local_sensitive_file.kubeconfig
]
}

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@ -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 ~}

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@ -47,4 +47,4 @@ spec:
serviceAccountName: system-upgrade
cordon: true
upgrade:
image: rancher/k3s-upgrade
image: rancher/k3s-upgrade