Chainguard Container for cluster-api-azure-controller

Kubernetes Cluster API provider for Microsoft Azure infrastructure management.

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/cluster-api-azure-controller:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

Chainguard's cluster-api-azure-controller image is compatible with the upstream Cluster API Provider Azure. This image contains only the minimum set of dependencies needed to run the Azure infrastructure provider components.

Getting Started

The Cluster API Provider for Azure enables you to create and manage Kubernetes clusters on Microsoft Azure using Cluster API. It provides declarative APIs for provisioning and managing Azure infrastructure resources including Virtual Machines, Virtual Networks, and Load Balancers.

Prerequisites

• A management cluster with Cluster API core components installed
• clusterctl CLI tool
• Microsoft Azure account with appropriate permissions
• Azure service principal credentials configured

Installation

Initialize the Azure infrastructure provider using clusterctl:

clusterctl init --infrastructure azure

Or manually install using the Chainguard image by applying the InfrastructureProvider resource:

kubectl apply -f - <<EOF
apiVersion: operator.cluster.x-k8s.io/v1alpha2
kind: InfrastructureProvider
metadata:
  name: azure
  namespace: capz-system
spec:
  version: v1.20.2
  configSecret:
    name: capz-manager-bootstrap-credentials
  deployment:
    containers:
    - name: manager
      imageUrl: cgr.dev/ORGANIZATION/cluster-api-azure-controller:latest
EOF

Usage Example

Create an Azure cluster using Cluster API resources:

apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
kind: AzureClusterIdentity
metadata:
  name: azure-identity
spec:
  type: ServicePrincipal
  allowedNamespaces:
    list:
      - azure-infrastructure-system
  clientID: "00000000-0000-0000-0000-000000000000"
  clientSecret:
    name: azure-credentials
    namespace: azure-infrastructure-system
  tenantID: "22222222-2222-2222-2222-222222222222"
---
apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
kind: AzureCluster
metadata:
  name: my-azure-cluster
spec:
  identityRef:
    kind: AzureClusterIdentity
    name: azure-identity
  location: eastus
  resourceGroup: my-cluster-rg
  subscriptionID: "12345678-1234-1234-1234-123456789012"
  networkSpec:
    vnet:
      name: my-cluster-vnet
      cidrBlocks:
      - "10.0.0.0/8"
    subnets:
    - name: control-plane-subnet
      cidrBlocks:
      - "10.0.0.0/16"
      role: control-plane
    - name: node-subnet
      cidrBlocks:
      - "10.1.0.0/16"
      role: node
---
apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
kind: AzureMachineTemplate
metadata:
  name: my-cluster-control-plane
spec:
  template:
    spec:
      vmSize: Standard_D2s_v3
      image:
        marketplace:
          publisher: cncf-upstream
          offer: capi
          sku: ubuntu-2004-gen1
          version: latest
      osDisk:
        osType: Linux
        diskSizeGB: 50
        managedDisk:
          storageAccountType: Premium_LRS

Configuration

The controller requires an Azure service principal with the following permissions:

• Contributor role on the subscription or resource group
• Network Contributor role (if managing virtual networks)

Create and configure the credentials secret:

kubectl create secret generic capz-manager-bootstrap-credentials \
  --from-literal=clientSecret="$AZURE_CLIENT_SECRET" \
  --namespace capz-system

kubectl patch secret capz-manager-bootstrap-credentials \
  --namespace capz-system \
  --patch '{
    "data": {
      "clientId": "'$(echo -n "$AZURE_CLIENT_ID" | base64 -w0)'",
      "tenantId": "'$(echo -n "$AZURE_TENANT_ID" | base64 -w0)'",
      "subscriptionId": "'$(echo -n "$AZURE_SUBSCRIPTION_ID" | base64 -w0)'"
    }
  }'

Documentation and Resources

• Cluster API Provider Azure GitHub Repository
• Cluster API Documentation
• Microsoft Azure Documentation

What are Chainguard Containers?

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