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Kamaji and Azure

The Kamaji Control Plane provider was able to create an Azure backed Kubernetes cluster by providing Kamaji Control Planes.

NAME                                                                  READY  SEVERITY  REASON  SINCE  MESSAGE                                                                                           
Cluster/capi-quickstart                                               True                     31m                                                                                                       
├─ClusterInfrastructure - AzureCluster/kamaji-quickstart-control-plane  True                     31m                                                                                                       
├─ControlPlane - KamajiControlPlane/kamaji-azure-127                                                                                                                                       
└─Workers                                                                                                                                                                                
  └─MachineDeployment/capi-quickstart-md-0                            True                     28s                                                                                                       
    └─3 Machines...                                                   True                     12m    See capi-quickstart-md-0-6848dccdffxn5j9b-cjgp5, capi-quickstart-md-0-6848dccdffxn5j9b-gk95g, ...

Example manifests

The said cluster has been created with the following manifests.

apiVersion: cluster.x-k8s.io/v1beta1
kind: Cluster
metadata:
  name: capi-quickstart
  namespace: default
spec:
  clusterNetwork:
    apiServerPort: 443
    pods:
      cidrBlocks:
        - 10.244.0.0/16
  controlPlaneRef:
    apiVersion: controlplane.cluster.x-k8s.io/v1beta1
    kind: KamajiControlPlane
    name: kamaji-quickstart-control-plane
  infrastructureRef:
    apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
    kind: AzureCluster
    name: capi-quickstart
---
apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
kind: AzureCluster
metadata:
  name: capi-quickstart
  namespace: default
spec:
  identityRef:
    apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
    kind: AzureClusterIdentity
    name: azure-identity
  location: westeurope
  controlPlaneEnabled: false
  networkSpec:
    subnets:
      - name: node-subnet
        role: node
    vnet:
      name: workload
  resourceGroup: test-resource-group
  subscriptionID: 00000000-0000-0000-0000-000000000000
---
apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
kind: AzureClusterIdentity
metadata:
  labels:
    clusterctl.cluster.x-k8s.io/move-hierarchy: "true"
  name: azure-identity
spec:
  allowedNamespaces: {}
  clientID: 00000000-0000-0000-0000-000000000000
  clientSecret:
    name: azure-client-secret
    namespace: azure
  tenantID: 00000000-0000-0000-0000-000000000000
  type: ServicePrincipal
---
apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
kind: KamajiControlPlane
metadata:
  name: kamaji-quickstart-control-plane
  namespace: default
spec:
  apiServer:
    extraArgs:
      - --cloud-provider=external
  controllerManager:
    extraArgs:
      - --cloud-provider=external
  dataStoreName: default
  addons:
    coreDNS: { }
    konnectivity: { }
    kubeProxy: { }
  kubelet:
    cgroupfs: systemd
    preferredAddressTypes:
      - ExternalIP
      - InternalIP
      - Hostname
  network:
    serviceType: LoadBalancer
  deployment:
  replicas: 2
  version: 1.30.0
---
apiVersion: cluster.x-k8s.io/v1beta1
kind: MachineDeployment
metadata:
  name: capi-quickstart-md-0
  namespace: default
spec:
  clusterName: capi-quickstart
  replicas: 2
  selector:
    matchLabels: null
  template:
    spec:
      bootstrap:
        configRef:
          apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
          kind: KubeadmConfigTemplate
          name: capi-quickstart-md-0
      clusterName: workload
      infrastructureRef:
        apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
        kind: AzureMachineTemplate
        name: capi-quickstart-md-0
      version: v1.30.0
---
apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
kind: AzureMachineTemplate
metadata:
  name: capi-quickstart-md-0
  namespace: default
spec:
  template:
    spec:
      osDisk:
        diskSizeGB: 128
        osType: Linux
      sshPublicKey: ""
      vmSize: Standard_DS3_v2
---
apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
kind: KubeadmConfigTemplate
metadata:
  name: capi-quickstart-md-0
  namespace: default
spec:
  template:
    spec:
      files:
        - contentFrom:
            secret:
              key: worker-node-azure.json
              name: workload-md-0-azure-json
          owner: root:root
          path: /etc/kubernetes/azure.json
          permissions: "0644"
      joinConfiguration:
        nodeRegistration:
          kubeletExtraArgs:
            cloud-provider: external
          name: '{{ ds.meta_data["local_hostname"] }}'
      preKubeadmCommands: []

Technical considerations

The Cluster API Azure infrastructure provider supports starting from v1.18.0.

Once the cluster has been provisioned, you need to install the Azure Cloud Controller Manager.