Add kustomize templates

Signed-off-by: Sayan Chowdhury <[email protected]> Signed-off-by: Mathieu Tortuyaux <[email protected]>
kubernetes-sigs · Oct 22, 2024 · 9ee7645 · 9ee7645
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diff --git a/templates/flavors/flatcar-sysext/kustomization.yaml b/templates/flavors/flatcar-sysext/kustomization.yaml
@@ -0,0 +1,9 @@
+namespace: default
+resources:
+  - ../base
+  - machine-deployment.yaml
+  - ../../azure-cluster-identity
+
+patchesStrategicMerge:
+  - patches/kubeadm-controlplane.yaml
+  - ../../azure-cluster-identity/azurecluster-identity-ref.yaml
diff --git a/templates/flavors/flatcar-sysext/machine-deployment.yaml b/templates/flavors/flatcar-sysext/machine-deployment.yaml
@@ -0,0 +1,118 @@
+---
+apiVersion: cluster.x-k8s.io/v1beta1
+kind: MachineDeployment
+metadata:
+  name: ${CLUSTER_NAME}-md-0
+spec:
+  clusterName: ${CLUSTER_NAME}
+  replicas: ${WORKER_MACHINE_COUNT}
+  selector:
+    matchLabels: null
+  template:
+    spec:
+      bootstrap:
+        configRef:
+          apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
+          kind: KubeadmConfigTemplate
+          name: ${CLUSTER_NAME}-md-0
+      clusterName: ${CLUSTER_NAME}
+      infrastructureRef:
+        apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+        kind: AzureMachineTemplate
+        name: ${CLUSTER_NAME}-md-0
+      version: ${KUBERNETES_VERSION}
+---
+apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+kind: AzureMachineTemplate
+metadata:
+  name: ${CLUSTER_NAME}-md-0
+spec:
+  template:
+    spec:
+      image:
+        computeGallery:
+          gallery: flatcar-23485951-527a-48d6-9d11-6931ff0afc2e
+          name: flatcar-stable-amd64
+          version: ${FLATCAR_VERSION}
+      osDisk:
+        diskSizeGB: 128
+        osType: Linux
+      sshPublicKey: ${AZURE_SSH_PUBLIC_KEY_B64:=""}
+      vmSize: ${AZURE_NODE_MACHINE_TYPE}
+---
+apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
+kind: KubeadmConfigTemplate
+metadata:
+  name: ${CLUSTER_NAME}-md-0
+spec:
+  template:
+    spec:
+      files:
+      - contentFrom:
+          secret:
+            key: worker-node-azure.json
+            name: ${CLUSTER_NAME}-md-0-azure-json
+        owner: root:root
+        path: /etc/kubernetes/azure.json
+        permissions: "0644"
+      format: ignition
+      ignition:
+        containerLinuxConfig:
+          additionalConfig: |
+            storage:
+              links:
+              - path: /etc/extensions/kubernetes.raw
+                hard: false
+                target: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
+              files:
+              - path: /etc/sysupdate.kubernetes.d/kubernetes-${KUBERNETES_VERSION%.*}.conf
+                mode: 0644
+                contents:
+                  remote:
+                    url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION%.*}.conf
+              - path: /etc/sysupdate.d/noop.conf
+                mode: 0644
+                contents:
+                  remote:
+                    url: https://github.com/flatcar/sysext-bakery/releases/download/latest/noop.conf
+              - path: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
+                contents:
+                  remote:
+                    url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
+            systemd:
+              units:
+              - name: systemd-sysupdate.service
+                dropins:
+                  - name: kubernetes.conf
+                    contents: |
+                      [Service]
+                      ExecStartPre=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes"
+                      ExecStartPre=/usr/lib/systemd/systemd-sysupdate -C kubernetes update
+                      ExecStartPost=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes-new"
+                      ExecStartPost=/usr/bin/sh -c "if ! cmp --silent /tmp/kubernetes /tmp/kubernetes-new; then touch /run/reboot-required; fi"
+              - name: update-engine.service
+                # Set this to 'false' if you want to enable Flatcar auto-update
+                mask: ${FLATCAR_DISABLE_AUTO_UPDATE:=true}
+              - name: locksmithd.service
+                # NOTE: To coordinate the node reboot in this context, we recommend to use Kured.
+                mask: true
+              - name: systemd-sysupdate.timer
+                # Set this to 'true' if you want to enable the Kubernetes auto-update.
+                # NOTE: Only patches version will be pulled.
+                enabled: false
+              - name: kubeadm.service
+                dropins:
+                - name: 10-flatcar.conf
+                  contents: |
+                    [Unit]
+                    After=oem-cloudinit.service
+                    # kubeadm must run after containerd - see https://github.com/kubernetes-sigs/image-builder/issues/939.
+                    After=containerd.service
+      joinConfiguration:
+        nodeRegistration:
+          kubeletExtraArgs:
+            cloud-provider: external
+          name: '@@HOSTNAME@@'
+      postKubeadmCommands: []
+      preKubeadmCommands:
+      - sed -i "s/@@HOSTNAME@@/$(curl -s -H Metadata:true --noproxy '*' 'http://169.254.169.254/metadata/instance?api-version=2020-09-01' | jq -r .compute.name)/g" /etc/kubeadm.yml
diff --git a/templates/flavors/flatcar-sysext/patches/kubeadm-controlplane.yaml b/templates/flavors/flatcar-sysext/patches/kubeadm-controlplane.yaml
@@ -0,0 +1,101 @@
+---
+apiVersion: controlplane.cluster.x-k8s.io/v1beta1
+kind: KubeadmControlPlane
+metadata:
+  name: ${CLUSTER_NAME}-control-plane
+spec:
+  kubeadmConfigSpec:
+    diskSetup:
+      filesystems:
+      - device: /dev/disk/azure/scsi1/lun0
+        extraOpts:
+        - -E
+        - lazy_itable_init=1,lazy_journal_init=1
+        filesystem: ext4
+        label: etcd_disk
+        overwrite: false
+      # Workaround for https://github.com/kubernetes-sigs/cluster-api/issues/7679.
+      partitions: []
+    format: ignition
+    ignition:
+      containerLinuxConfig:
+        additionalConfig: |
+          systemd:
+            units:
+            - name: systemd-sysupdate.service
+              dropins:
+                - name: kubernetes.conf
+                  contents: |
+                    [Service]
+                    ExecStartPre=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes"
+                    ExecStartPre=/usr/lib/systemd/systemd-sysupdate -C kubernetes update
+                    ExecStartPost=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes-new"
+                    ExecStartPost=/usr/bin/sh -c "if ! cmp --silent /tmp/kubernetes /tmp/kubernetes-new; then touch /run/reboot-required; fi"
+            - name: update-engine.service
+              # Set this to 'false' if you want to enable Flatcar auto-update
+              mask: ${FLATCAR_DISABLE_AUTO_UPDATE:=true}
+            - name: locksmithd.service
+              # NOTE: To coordinate the node reboot in this context, we recommend to use Kured.
+              mask: true
+            - name: systemd-sysupdate.timer
+              # Set this to 'true' if you want to enable the Kubernetes auto-update.
+              # NOTE: Only patches version will be pulled.
+              enabled: false
+            - name: kubeadm.service
+              dropins:
+              - name: 10-flatcar.conf
+                contents: |
+                  [Unit]
+                  After=oem-cloudinit.service
+                  # kubeadm must run after containerd - see https://github.com/kubernetes-sigs/image-builder/issues/939.
+                  After=containerd.service
+          # Workaround for https://github.com/kubernetes-sigs/cluster-api/issues/7679.
+          storage:
+            disks:
+            - device: /dev/disk/azure/scsi1/lun0
+              partitions:
+              - number: 1
+            links:
+            - path: /etc/extensions/kubernetes.raw
+              hard: false
+              target: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
+            files:
+            - path: /etc/sysupdate.kubernetes.d/kubernetes-${KUBERNETES_VERSION%.*}.conf
+              mode: 0644
+              contents:
+                remote:
+                  url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION%.*}.conf
+            - path: /etc/sysupdate.d/noop.conf
+              mode: 0644
+              contents:
+                remote:
+                  url: https://github.com/flatcar/sysext-bakery/releases/download/latest/noop.conf
+            - path: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
+              contents:
+                remote:
+                  url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
+    initConfiguration:
+      nodeRegistration:
+        name: '@@HOSTNAME@@'
+    joinConfiguration:
+      nodeRegistration:
+        name: '@@HOSTNAME@@'
+    mounts:
+    - - etcd_disk
+      - /var/lib/etcddisk
+    postKubeadmCommands: []
+    preKubeadmCommands:
+    - sed -i "s/@@HOSTNAME@@/$(curl -s -H Metadata:true --noproxy '*' 'http://169.254.169.254/metadata/instance?api-version=2020-09-01' | jq -r .compute.name)/g" /etc/kubeadm.yml
+---
+apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+kind: AzureMachineTemplate
+metadata:
+  name: ${CLUSTER_NAME}-control-plane
+spec:
+  template:
+    spec:
+      image:
+        computeGallery:
+          gallery: flatcar-23485951-527a-48d6-9d11-6931ff0afc2e
+          name: flatcar-stable-amd64
+          version: ${FLATCAR_VERSION}