1. Deploy the simple-keycloak helm chart on Azure Kubernetes Service (AKS)


    Deploying the simple-keycloak Helm chart on Azure Kubernetes Service (AKS) requires several steps that we'll go through one by one. We'll use Pulumi's TypeScript SDK to script the process, which includes establishing an AKS cluster, installing the Helm chart, and setting up any necessary configurations. Below is a walkthrough of each step in the process, along with a program that accomplishes it.

    Step 1: Provision an AKS Cluster

    First, we need an AKS cluster to deploy our Helm chart. We use the ProvisionedCluster resource from the azure-native provider to create a new AKS cluster.

    Step 2: Deploy the Helm Chart

    Once we have our AKS cluster, we can deploy applications using Helm charts. Pulumi provides the helm.sh/v3.Chart resource for deploying Helm charts on Kubernetes.

    Step 3: Configuring the simple-keycloak Chart

    The simple-keycloak Helm chart may require specific configurations such as setting admin user credentials or database connections. We'll use the values property of the Chart resource to pass a configuration object to the chart.

    Now, let's translate these steps into a TypeScript program using Pulumi.

    import * as pulumi from "@pulumi/pulumi"; import * as azure_native from "@pulumi/azure-native"; import * as k8s from "@pulumi/kubernetes"; import * as azuread from "@pulumi/azuread"; // Configuration variables for the AKS cluster const name = "simplekeycloak"; const location = "East US"; const resourceGroupName = new azure_native.resources.ResourceGroup(`rg-${name}`, { location, }); // Create an Azure AD application for AKS const app = new azuread.Application("aks", { displayName: "aks", }); // Create a service principal for the application const servicePrincipal = new azuread.ServicePrincipal("aksSp", { applicationId: app.applicationId, }); // Create the AKS cluster const cluster = new azure_native.containerservice.ManagedCluster(`aksCluster-${name}`, { resourceGroupName: resourceGroupName.name, location, agentPoolProfiles: [{ count: 3, mode: "System", name: "agentpool", vmSize: "Standard_DS2_v2", }], dnsPrefix: `${pulumi.getStack()}-kube`, enableRBAC: true, kubernetesVersion: "1.21.2", linuxProfile: { adminUsername: "testuser", ssh: { publicKeys: [{ keyData: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC...", }], }, }, servicePrincipalProfile: { clientId: app.applicationId, secret: servicePrincipal.applicationId, }, }); // Export the KubeConfig const creds = pulumi.all([cluster.name, resourceGroupName.name]).apply(([clusterName, rgName]) => azure_native.containerservice.listManagedClusterUserCredentials({ resourceGroupName: rgName, resourceName: clusterName, }), ); const kubeConfig = creds.apply(creds => creds.kubeconfigs[0].value.apply(x => Buffer.from(x, 'base64').toString())); export const kubeConfigOut = kubeConfig; // Create a provider for the created cluster const k8sProvider = new k8s.Provider("k8sProvider", { kubeconfig: kubeConfig, }); // Deploy the simple-keycloak Helm chart const keycloak = new k8s.helm.v3.Chart("simple-keycloak", { // simple-keycloak chart repo is a placeholder, replace with the actual URL repo: "example-repo", chart: "simple-keycloak", version: "1.0.0", // Set values for the simple-keycloak chart (Update these with actual values) values: { keycloak: { username: "admin", password: "admin", }, }, }, { provider: k8sProvider }); // Export the Keycloak service endpoint export const keycloakService = keycloak.getResource("v1/Service", "simple-keycloak", "keycloak");

    Here's what each part of the program does:

    • Resources Setup: This section defines some basic configuration like resource group name and location. We also create a new Azure Resource Group to hold our AKS cluster.

    • Azure AD App and Service Principal: We create an Azure AD application and associated service principal which will be used by AKS to interact with other Azure services.

    • Create AKS Cluster: We use azure_native.containerservice.ManagedCluster to create our AKS cluster. This includes defining an agent pool, where the actual Kubernetes nodes will run.

    • Export KubeConfig: Once the cluster is created, we retrieve the credentials needed to interact with Kubernetes and export them.

    • Kubernetes Provider: The Provider resource lets Pulumi know how to interact with our Kubernetes cluster.

    • Deploy Helm Chart: We deploy the simple-keycloak Helm chart using the Chart resource from Pulumi's Kubernetes provider. The values object is where you can pass the necessary configuration to the Helm chart.

    This program is everything you need to deploy the simple-keycloak Helm chart on an AKS cluster. You will need to configure your Pulumi and Azure credentials before running it, and you may need to replace placeholders like the chart's repo with actual values. Run this program with the pulumi up command to provision the resources and deploy the Helm chart.