Deploy the keycloak-resources helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `keycloak-resources` Helm chart to an Azure Kubernetes Service (AKS) cluster using Pulumi, you will need to accomplish the following:

1. Create an AKS cluster or use an existing one.
2. Install the Helm chart for Keycloak onto the AKS cluster.

Here's a detailed breakdown of how you'll do this using Pulumi with TypeScript:

- **Step 1: Set Up AKS Cluster**: You'll first need an AKS cluster. Pulumi allows you to define your infrastructure as code using TypeScript. If you already have an AKS cluster, you can skip to step 2.

- **Step 2: Deploy Helm Chart**: Once you have your AKS cluster ready, you'll use Pulumi's Kubernetes provider to deploy the `keycloak-resources` Helm chart on it. You will use the `Chart` resource from the `@pulumi/kubernetes` package to accomplish this.

Here's the TypeScript program that performs these steps. Ensure that you have Pulumi installed and configured to access your Azure account before running this code:

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

// Step 1: Provision an Azure Kubernetes Service (AKS) cluster
// This assumes that you already have a resource group and a location (e.g., "West US") in mind.

const resourceGroupName = "myResourceGroup"; // Replace with your Resource Group name
const resourceGroup = new azure.core.ResourceGroup("myResourceGroup", {
    location: azure.Locations.WestUS,
});

// Create an Azure AD Application for the AKS cluster
const app = new azuread.Application("aks");

// Create a Service Principal for the Application
const servicePrincipal = new azuread.ServicePrincipal("aksSp", { applicationId: app.applicationId });

// Create the Service Principal Password
const servicePrincipalPassword = new azuread.ServicePrincipalPassword("aksSpPassword", {
    servicePrincipalId: servicePrincipal.id,
    endDate: "2099-01-01T00:00:00Z",
});

// Create an AKS cluster
const cluster = new azure.containerservice.KubernetesCluster("myCluster", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    defaultNodePool: {
        name: "aksagentpool",
        nodeCount: 2,
        vmSize: "Standard_DS2_v2",
    },
    dnsPrefix: `${pulumi.getStack()}-kube`,
    servicePrincipal: {
        clientId: app.applicationId,
        clientSecret: servicePrincipalPassword.value,
    },
    kubernetesVersion: "1.18.14",
});

// Export the kubeconfig
export const kubeconfig = cluster.kubeConfigRaw;

// Step 2: Deploy the keycloak-resources Helm chart on the AKS cluster

// A Kubernetes provider instance uses the generated kubeconfig
const k8sProvider = new k8s.Provider("aksK8s", {
    kubeconfig: cluster.kubeConfigRaw,
});

// Deploy keycloak-resources Helm chart using the Pulumi Kubernetes provider
const keycloakChart = new k8s.helm.v3.Chart("keycloak", {
    chart: "keycloak", // Assume this is the chart name, please change if it differs
    version: "x.y.z", // Specify the chart version you want to deploy
    fetchOpts: { repo: "https://charts.helm.sh/stable" }, // Specify the Helm repo URL
    values: { /* Keycloak values like admin username, password, etc. */ },
}, { provider: k8sProvider });
```

Make sure to replace `"x.y.z"` with the version of the Keycloak Helm chart you want to deploy, and provide the required values by replacing `/* Keycloak values like admin username, password, etc. */` with actual configuration values for the Keycloak Helm chart.

After setting up the above program, you can deploy it using the Pulumi CLI.

Here's what you would do in your terminal to preview and apply the configuration:

```sh
pulumi up
```

This command initiates the deployment process:

- It will show you a preview of the resources that Pulumi will create (or update).
- If you confirm the changes, Pulumi will provision the resources in the order specified, taking care of all dependencies.

Once the deployment is successful, your Keycloak instance will be up and running on the AKS cluster, and you can start to manage your authentication services. The `kubeconfig` export will allow you to connect to your Kubernetes cluster using the Kubernetes CLI (`kubectl`) or any other compatible tool.