1. Deploy the cert-manager-configs helm chart on Azure Kubernetes Service (AKS)


    In order to deploy the cert-manager-configs Helm chart on Azure Kubernetes Service (AKS), we'll need to run through several steps using Pulumi's TypeScript programming language.

    1. Create an AKS Cluster: We'll start by defining an AKS cluster resource in Pulumi. This will provision the Kubernetes cluster where our applications and services will run.

    2. Install Cert-Manager: After having the cluster ready, we'll use Pulumi's Helm chart resource to deploy Cert-Manager, which is a Kubernetes add-on to automate the management and issuance of TLS certificates from various issuing sources.

    3. Configure Networking (if necessary): Cert-Manager typically requires access to DNS and HTTP resources to validate domain ownership and issue certificates. We might need to configure networking options like service annotations or ingress resources as needed, depending on your specific scenario.

    Before proceeding, please make sure you have:

    • Installed the Pulumi CLI.
    • Configured your Azure credentials for use with Pulumi.
    • Created a Pulumi stack and project.

    The following program illustrates how to do this:

    import * as pulumi from "@pulumi/pulumi"; import * as k8s from "@pulumi/kubernetes"; import * as aks from "@pulumi/azure-native/containerservice"; import * as resources from "@pulumi/azure-native/resources"; // Step 1: Create a new resource group for the AKS cluster if it doesn't exist const resourceGroupName = new resources.ResourceGroup("myResourceGroup"); // Step 2: Create the AKS cluster const cluster = new aks.ManagedCluster("myAKSCluster", { resourceGroupName: resourceGroupName.name, agentPoolProfiles: [{ count: 2, vmSize: "Standard_DS2_v2", mode: "System", }], dnsPrefix: "myakscluster", // Enable RBAC for the cluster enableRbac: true, }); // Export the Kubeconfig for the AKS cluster export const kubeconfig = pulumi.all([cluster.name, resourceGroupName.name]).apply(([clusterName, rgName]) => aks.listManagedClusterUserCredentials({ resourceName: clusterName, resourceGroupName: rgName, }).then(creds => Buffer.from(creds.kubeconfigs[0].value, 'base64').toString()) ); // Step 3: Create a provider for the AKS cluster const k8sProvider = new k8s.Provider("k8sprovider", { kubeconfig: kubeconfig, }); // Step 4: Deploy cert-manager-configs Helm chart using Pulumi const certManager = new k8s.helm.v3.Chart("cert-manager", { repo: "jetstack", chart: "cert-manager", version: "1.5.3", // Specify the version of cert-manager you wish to install // Include any custom values you need for the cert-manager Helm chart // Often these are things like ingress class, email for letsencrypt etc. // For example: values: { installCRDs: true, }, }, { provider: k8sProvider }); // Export the cert-manager Helm chart status export const certManagerStatus = certManager.status;

    Breakdown of the Program:

    1. The resources.ResourceGroup class creates a new Azure resource group, which will contain the AKS cluster. Resource groups help keep your Azure resources organized.

    2. aks.ManagedCluster class is used to create the AKS cluster. This includes setting up the Kubernetes version, the size of the VMs for the nodes, the count of the nodes, enabling RBAC, and specifying the DNS prefix for the services to be hosted.

    3. pulumi.all and aks.listManagedClusterUserCredentials are used together to fetch the credentials of the AKS cluster and convert them to Kubeconfig format, so you can interact with your cluster using kubectl.

    4. k8s.Provider class configures the Kubernetes provider with the Kubeconfig of our cluster. It allows Pulumi to perform deployments on the AKS we've provisioned.

    5. k8s.helm.v3.Chart class deploys the cert-manager helm chart onto the AKS cluster. The specified values field in the chart should contain configurations specific to Cert-Manager, and installCRDs is set to true to ensure that Cert-Manager's custom resource definitions are created during installation.

    6. Finally, we export certManager.status which will give us info about the deployment status of the helm chart.

    By running this Pulumi program, you will create an AKS cluster and deploy Cert-Manager on it. Please review the Helm chart values you need and apply them where needed. The kubeconfig is crucially important as it is needed to manage the Kubernetes cluster and should be handled securely.