1. Deploy the variant-cron helm chart on Azure Kubernetes Service (AKS)


    To deploy the variant-cron Helm chart on Azure Kubernetes Service (AKS), we’ll follow these steps:

    1. Set up AKS Cluster: First, we need to provision an AKS cluster where our Helm chart will be deployed.

    2. Install Helm Chart: After the cluster is set up, we will use Pulumi’s Helm v3 support to deploy the variant-cron Helm chart onto the AKS cluster.

    For the Helm Chart deployment, I'll assume that variant-cron is available in one of the Helm repositories. If it's a custom chart or located in a private repository, you would need to adjust the repo attribute to point to that repository or configure the repository access accordingly.

    Below is a Pulumi program written in TypeScript to perform these actions.

    import * as pulumi from "@pulumi/pulumi"; import * as azure from "@pulumi/azure"; import * as kubernetes from "@pulumi/kubernetes"; import * as azuread from "@pulumi/azuread"; import * as tls from "@pulumi/tls"; // Step 1: Set up an AKS Cluster // We'll create a new resource group, an AD service principal, and finally an AKS cluster. // Create an Azure Resource Group const resourceGroup = new azure.core.ResourceGroup("resourceGroup", { location: "East US", // You can change this to the location of your choice }); // Create an AD service principal for the AKS cluster. const adApp = new azuread.Application("aks", {}); const adSp = new azuread.ServicePrincipal("aksSp", { applicationId: adApp.applicationId }); // Generate random password. const password = new tls.PrivateKey("password", { algorithm: "RSA", }); // Create the Service Principal Password const adSpPassword = new azuread.ServicePrincipalPassword("aksSpPassword", { servicePrincipalId: adSp.id, value: password.privateKeyPem, endDate: "2099-01-01T00:00:00Z", }); // Create the AKS cluster const aksCluster = new azure.containerService.KubernetesCluster("aksCluster", { resourceGroupName: resourceGroup.name, linuxProfile: { adminUsername: "adminuser", sshKey: { keyData: password.publicKeyOpenssh, }, }, servicePrincipal: { clientId: adApp.applicationId, clientSecret: adSpPassword.value, }, defaultNodePool: { name: "aksagentpool", nodeCount: 1, vmSize: "Standard_DS2_v2", }, dnsPrefix: `${pulumi.getStack()}-kube`, }); // Export the KubeConfig export const kubeConfig = aksCluster.kubeConfigRaw; // Step 2: Install Helm Chart // We will declare the Helm chart using Pulumi’s Helm Chart resource. // Create a Kubernetes provider instance that uses our cluster from above. const k8sProvider = new kubernetes.Provider("k8sProvider", { kubeconfig: kubeConfig, }); // Deploy the variant-cron Helm chart into the AKS cluster const variantCronChart = new kubernetes.helm.v3.Chart("variant-cron-chart", { chart: "variant-cron", // You must specify the repository where your chart is hosted. If the chart is in a well-known repository // like "stable" or "bitnami", you don't need to specify the `repo` attribute. // repo: "http://myhelmrepo.org", values: { // Specify your Helm values here. }, }, { provider: k8sProvider }); // Optionally, you can export the status of the deployed Helm release export const helmChartStatus = variantCronChart.status;

    Before running this Pulumi program, you must have Pulumi installed and configured for use with Azure. Please follow Pulumi’s Azure setup documentation to do so.

    What this program does:

    1. Resource Group Creation: We start by creating a new Azure Resource Group, which is a container that holds related resources for an Azure solution.

    2. Azure AD Application and Service Principal: This is required by AKS to interact with Azure APIs. We create new Azure Active Directory (AD) applications and service principals for the AKS cluster.

    3. SSH Key Generation: We are using the tls package to generate a new RSA key pair. This is because AKS requires an SSH key pair to access the nodes in your Kubernetes cluster.

    4. AKS Cluster Creation: With the service principal and SSH public key, we create the Kubernetes cluster using the azure.containerService.KubernetesCluster class.

    5. Export KubeConfig: The kubeConfig is outputted for use with kubectl and other Kubernetes tools.

    6. Helm Chart Deployment: We create a Kubernetes provider that's wired to the credentials for our new AKS cluster, and then we declare our variant-cron Helm chart, specifying the chart name and any values that are needed for customizing the installation.

    After running pulumi up, Pulumi will provision these resources in the order specified, taking care of dependencies between resources automatically.

    To access the Kubernetes cluster, you can use the exported kubeConfig or the Azure CLI (az aks get-credentials). Once you have your cluster set up, you can use kubectl to interact with your AKS cluster, deploy applications, and manage workloads.