Deploy the openshift-scc helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the OpenShift SCC (Security Context Constraints) Helm chart on Azure Kubernetes Service (AKS), we'll go through the steps to set up the infrastructure needed and then deploy the chart.

### Prerequisites
- You should have Pulumi installed and setup with an Azure account.
- You need to have `kubectl` installed to interact with the AKS cluster.
- Helm must be installed to manage the Kubernetes charts.

### Steps to Deploy the OpenShift SCC Helm chart on AKS:

1. **Create an AKS Cluster**: First, we'll create a resource definition for an AKS Cluster using Pulumi's Azure Native provider. We'll specify the required node count, size, and other parameters.

2. **Install and Configure Helm**: Once the AKS cluster is created, we will configure `kubectl` to interact with the cluster and then use Helm to install the OpenShift SCC chart.

3. **Deploy the Helm Chart**: This step includes configuring the Helm provider in Pulumi and deploying the Helm chart onto the AKS cluster.

Below is a detailed Pulumi program written in TypeScript that accomplishes these steps:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as azure_native from "@pulumi/azure-native";
import * as k8s from "@pulumi/kubernetes";
import * as random from "@pulumi/random";

// Create a new password for the AKS cluster service principal.
const password = new random.RandomPassword("password", {
    length: 20,
    special: true,
});

// Create a new AKS cluster.
const managedCluster = new azure_native.containerservice.ManagedCluster("aksCluster", {
    resourceGroupName: "myResourceGroup",
    // Generate an SSH key for the AKS cluster.
    linuxProfile: {
        adminUsername: "aksuser",
        ssh: {
            publicKeys: [{
                keyData: new random.RandomString("sshKey", {
                    length: 2048,
                    special: false,
                }, {
                    additionalSecretOutputs: ["result"],
                }).result,
            }],
        },
    },
    // Define the cluster's service principal configuration.
    servicePrincipalProfile: {
        clientId: "clientId",
        secret: password.result,
    },
    // Define the agent pool profile.
    agentPoolProfiles: [{
        count: 2,
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        osDiskSizeGB: 30,
        osType: "Linux",
        vmSize: "Standard_DS2_v2",
    }],
    // Enable RBAC.
    enableRBAC: true,
    kubernetesVersion: "1.18.14",
    dnsPrefix: "kubernetes",
});

// Define the Kubernetes provider using the generated kubeconfig.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: managedCluster.kubeConfigRaw,
});

// Create a Kubernetes namespace.
const ns = new k8s.core.v1.Namespace("openshift-scc-ns", {
    metadata: {
        name: "openshift-scc",
    },
}, { provider: k8sProvider });

// Deploy the OpenShift SCC Helm chart into the created Kubernetes namespace.
const openshiftSccChart = new k8s.helm.v3.Chart("openshift-scc", {
    chart: "openshift-scc",
    version: "1.0.0", // Replace with the desired version
    namespace: ns.metadata.name,
    fetchOpts:{
        repo: "http://charts.openshift.io/", // This is an example. Replace with the actual Helm repo URL.
    },
}, { provider: k8sProvider });

// Export the Kubernetes cluster name and the kubeconfig.
export const clusterName = managedCluster.name;
export const kubeconfig = pulumi.secret(managedCluster.kubeConfigRaw);
```

### Explanation:

- We start by importing the necessary Pulumi packages for interacting with Azure, Kubernetes, and generating random values (used for password and SSH keys