Add rke2 flavor support

docs/src/SUMMARY.md

@@ -5,6 +5,11 @@
     - [Getting Started](./topics/getting-started.md)
     - [Troubleshooting](./topics/troubleshooting.md)
     - [Addons](./topics/addons.md)
+    - [Flavors](./topics/flavors/flavors.md)
+      - [Default (kubeadm)](./topics/flavors/default.md)
+      - [ClusterClass kubeadm](./topics/flavors/clusterclass-kubeadm.md)
+      - [k3s](./topics/flavors/k3s.md)
+      - [rke2](./topics/flavors/rke2.md)
 - [Development](./developers/development.md)
     - [Releasing](./developers/releasing.md)
 - [Reference](./reference/reference.md)

docs/src/flavors/flavors.md → docs/src/topics/flavors/flavors.md

@@ -1,5 +1,7 @@
 # Flavors
 
+This section contains information about supported flavors in Cluster API Provider Linode
+
 In `clusterctl` the infrastructure provider authors can provide different types
 of cluster templates referred to as "flavors". You can use the `--flavor` flag
 to specify which flavor to use for a cluster, e.g:
@@ -11,10 +13,3 @@ clusterctl generate cluster test-cluster --flavor clusterclass
 To use the default flavor, omit the `--flavor` flag.
 
 See the [`clusterctl` flavors docs](https://cluster-api.sigs.k8s.io/clusterctl/commands/generate-cluster.html#flavors) for more information.
-
-
-## Supported flavors 
-
-- [Default (kubeadm)](default.md)
-- [Cluster Class Kubeadm](clusterclass-kubeadm.md)
-- [k3s](k3s.md)

docs/src/topics/flavors/rke2.md

@@ -0,0 +1,24 @@
+# RKE2
+## Specification
+| Control Plane               | CNI    | Default OS   | Installs ClusterClass |
+|-----------------------------|--------|--------------|-----------------------|
+| [rke2](https://docs.rke2.io/) | Cilium | Ubuntu 22.04 | No                    |
+## Prerequisites
+* [Quickstart](../topics/getting-started.md) completed
+* Select an [rke2 kubernetes version](https://github.com/rancher/rke2/releases) to set for the kubernetes version
+  ```bash
+  export KUBERNETES_VERSION=v1.29.1+rke2r1
+  ```
+* Installed [rke2 bootstrap provider](https://github.com/rancher-sandbox/cluster-api-provider-rke2) into your management cluster
+  ```shell
+  clusterctl init --bootstrap rke2 --control-plane rke2
+  ```
+## Usage
+1. Generate cluster yaml
+    ```bash
+    clusterctl generate cluster test-cluster --infrastructure linode:0.0.0 --flavor rke2 > test-rke2-cluster.yaml
+    ```
+2. Apply cluster yaml
+    ```bash
+    kubectl apply -f test-rke2-cluster.yaml
+    ```

templates/flavors/rke2/kustomization.yaml

@@ -0,0 +1,22 @@
+resources:
+  - ../base
+  - rke2ControlPlane.yaml
+  - rke2ConfigTemplate.yaml
+  - secret.yaml
+patches:
+  - target:
+      group: cluster.x-k8s.io
+      version: v1beta1
+      kind: Cluster
+    patch: |-
+      - op: replace
+        path: /spec/controlPlaneRef/kind
+        value: RKE2ControlPlane
+  - target:
+      group: cluster.x-k8s.io
+      version: v1beta1
+      kind: MachineDeployment
+    patch: |-
+      - op: replace
+        path: /spec/template/spec/bootstrap/configRef/kind
+        value: RKE2ConfigTemplate

templates/flavors/rke2/rke2ConfigTemplate.yaml

@@ -0,0 +1,18 @@
+---
+apiVersion: bootstrap.cluster.x-k8s.io/v1alpha1
+kind: RKE2ConfigTemplate
+metadata:
+  name: ${CLUSTER_NAME}-md-0
+spec:
+  template:
+    spec:
+      agentConfig:
+        version: ${KUBERNETES_VERSION}
+        nodeName: '{{ ds.meta_data.label }}'
+        kubelet:
+          extraArgs:
+            - "provider-id=linode://{{ ds.meta_data.id }}"
+      preRKE2Commands:
+        - sed -i '/swap/d' /etc/fstab
+        - swapoff -a
+        - hostnamectl set-hostname '{{ ds.meta_data.label }}' && hostname -F /etc/hostname

templates/flavors/rke2/rke2ControlPlane.yaml

@@ -0,0 +1,42 @@
+---
+apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+kind: RKE2ControlPlane
+metadata:
+  name: ${CLUSTER_NAME}-control-plane
+spec:
+  infrastructureRef:
+    apiVersion: infrastructure.cluster.x-k8s.io/v1alpha1
+    kind: LinodeMachineTemplate
+    name: ${CLUSTER_NAME}-control-plane
+  files:
+    - contentFrom:
+        secret:
+          key: linode-ccm.yaml
+          name: linode-${CLUSTER_NAME}-crs-0
+      owner: root:root
+      path: /var/lib/rancher/rke2/server/manifests/linode-ccm.yaml
+    - contentFrom:
+        secret:
+          key:  linode-token-region.yaml
+          name: linode-${CLUSTER_NAME}-crs-0
+      owner: root:root
+      path: /var/lib/rancher/rke2/server/manifests/linode-token-region.yaml
+  serverConfig:
+    cni: cilium
+    cloudProviderName: external
+    disableComponents:
+      pluginComponents:
+        - "rke2-ingress-nginx"
+      kubernetesComponents:
+        - "cloudController"
+  agentConfig:
+    version: ${KUBERNETES_VERSION}
+    nodeName: '{{ ds.meta_data.label }}'
+    kubelet:
+      extraArgs:
+        - "provider-id=linode://{{ ds.meta_data.id }}"
+  preRKE2Commands:
+    - sed -i '/swap/d' /etc/fstab
+    - swapoff -a
+    - hostnamectl set-hostname '{{ ds.meta_data.label }}' && hostname -F /etc/hostname
+  replicas: ${CONTROL_PLANE_MACHINE_COUNT}

templates/flavors/rke2/secret.yaml

@@ -0,0 +1,32 @@
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: linode-${CLUSTER_NAME}-crs-0
+stringData:
+  linode-token-region.yaml: |-
+    kind: Secret
+    apiVersion: v1
+    metadata:
+      name: linode-token-region
+      namespace: kube-system
+    stringData:
+      apiToken: ${LINODE_TOKEN}
+      region: ${LINODE_REGION}
+  linode-ccm.yaml: |-
+    apiVersion: helm.cattle.io/v1
+    kind: HelmChart
+    metadata:
+     namespace: kube-system
+     name: ccm-linode
+    spec:
+     targetNamespace: kube-system
+     version: ${LINODE_CCM_VERSION:=v0.3.24}
+     chart: ccm-linode
+     repo: https://linode.github.io/linode-cloud-controller-manager/
+     bootstrap: true
+     valuesContent: |-
+       secretRef:
+         name: "linode-token-region"
+       nodeSelector:
+         node-role.kubernetes.io/control-plane: "true"