Deploy the ocis-idp helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `ocis-idp` helm chart on Azure Kubernetes Service (AKS), you'll begin by setting up an AKS cluster using Pulumi. Once your AKS cluster is deployed, you'll use the Pulumi Kubernetes Provider to install the `ocis-idp` helm chart onto that cluster.

The following Pulumi program in TypeScript outlines the necessary steps:

1. **Create an AKS cluster** using `azure-native` resources.
2. **Install the Helm chart** onto the AKS cluster using Pulumi's Kubernetes provider.

Before you begin, ensure you have the Pulumi CLI installed and you are logged into the Azure CLI with the necessary permissions to create resources in your Azure subscription.

Here's the detailed TypeScript program that accomplishes these steps:

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

// Step 1: Create an AKS cluster.
// You will need a resource group and at least one subnet in a virtual network.
const name = "aksexample";

const resourceGroup = new azure.resources.ResourceGroup("resourceGroup", {
    resourceGroupName: `${name}-rg`,
});

const vnet = new azure.network.VirtualNetwork("vnet", {
    resourceGroupName: resourceGroup.name,
    addressSpace: {
        addressPrefixes: ["10.0.0.0/16"],
    },
});

const subnet = new azure.network.Subnet("subnet", {
    resourceGroupName: resourceGroup.name,
    virtualNetworkName: vnet.name,
    addressPrefix: "10.0.1.0/24",
});

const aksCluster = new azure.containerservice.ManagedCluster("aksCluster", {
    resourceGroupName: resourceGroup.name,
    agentPoolProfiles: [{
        count: 1,
        vmSize: azure.containerservice.VMSizeTypes.Standard_DS2_v2,
        maxPods: 110,
        mode: azure.containerservice.AgentPoolMode.System,
        name: "agentpool",
        osDiskSizeGB: 30,
        osType: azure.containerservice.OSType.Linux,
        type: azure.containerservice.AgentPoolType.VirtualMachineScaleSets,
        vnetSubnetID: subnet.id,
    }],
    dnsPrefix: pulumi.interpolate`${name}-kube`,
});

// Export the Kubeconfig for the AKS cluster
const creds = pulumi.all([aksCluster.name, resourceGroup.name]).apply(([clusterName, rgName]) => {
    return azure.containerservice.listManagedClusterUserCredentials({
        resourceGroupName: rgName,
        resourceName: clusterName,
    });
});

const encoded = creds.kubeconfigs[0].value;
const kubeconfig = encoded.apply(e => Buffer.from(e, "base64").toString());

// Step 2: Deploy the Helm chart using Pulumi's Kubernetes provider.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeconfig,
});

const helmChart = new k8s.helm.v3.Chart("ocis-idp", {
    chart: "ocis-idp",
    version: "1.0.0", // Replace with the suitable chart version
    fetchOpts: {
        repo: "https://helm.example.com/", // Update this with the repository URL where the chart is located
    },
}, { provider: k8sProvider });

// Export necessary information about the cluster
export const clusterName = aksCluster.name;
export const kubeConfig = kubeconfig;
```

### Explanation:

- A new resource group and virtual network are created for the AKS cluster to live in.
- A subnet within the virtual network is established.
- The AKS cluster is set up with a single agent pool and system mode for essential pods such as kube-dns and kube-proxy.
- The kubeconfig needed to communicate with your cluster is fetched.
- The `ocis-idp` Helm chart is deployed on the AKS cluster using the Kubernetes provider.

Please make sure to replace placeholder values such as `"https://helm.example.com/"` with actual Helm chart repository URLs and `"1.0.0"` with the version of the `ocis-idp` Helm chart you wish to deploy.

To apply this program:
1. Save it into a file with a `.ts` extension, like `deploy-ocis-idp.ts`.
2. Run `pulumi up` from the command line in the same directory as your `.ts` file. Pulumi will perform the deployment as defined.

After running `pulumi up`, Pulumi will output the names and status of the resources it created or updated. If there are errors, Pulumi will report them, and you can adjust the code as needed. When the process completes successfully, the `ocis-idp` Helm chart will be running in your AKS cluster, and you will have the kubeconfig to access your Kubernetes cluster.