1. Deploy the mutating-webhook helm chart on AWS EKS


    Deploying a mutating webhook Helm chart on AWS EKS involves several steps, which can be automated using Pulumi. I'll walk you through the process, which includes provisioning an EKS cluster and deploying a Helm chart with Pulumi's Kubernetes provider.

    Step 1: Define the EKS Cluster

    First, we'll need to create an EKS cluster where our mutating webhook will live. The awsx package simplifies creating an EKS cluster by abstracting away the granularity that comes with using the base aws package, while providing sensible defaults and simpler interfaces.

    Step 2: Install the Mutating Webhook Helm Chart

    Once the EKS cluster is up and running, we can proceed to install Helm charts. Helm is a package manager for Kubernetes, enabling you to package, configure, and manage Kubernetes applications. Pulumi's Kubernetes provider supports Helm, allowing us to deploy Helm charts into our clusters.

    Step 3: Export Cluster Information

    After the cluster and Helm chart are deployed, we'll want to export some of the resulting information, such as the cluster's kubeconfig or any other pertinent metadata.

    Now, let's get into the Pulumi code that automates these steps:

    import * as pulumi from "@pulumi/pulumi"; import * as awsx from "@pulumi/awsx"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Define the EKS Cluster // Here we create a new EKS cluster using the awsx package. const cluster = new awsx.eks.Cluster("my-cluster"); // Step 2: Install the Mutating Webhook Helm Chart // Once the cluster is provisioned, we set up the Kubernetes provider to use the kubeconfig from our cluster. const k8sProvider = new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeconfig.apply(JSON.stringify), }); // We then deploy the Helm chart into our cluster. Replace 'chart-name' with the actual name of your Helm chart. const mutatingWebhook = new k8s.helm.v3.Chart("mutating-webhook", { chart: "chart-name", // You may need to specify the Helm repository URL where your chart is located. fetchArgs: { repo: "https://charts.your-repo.com/" }, // If your Helm chart needs additional values, specify them here. values: { // Example additional value (modify as needed): namespaceSelector: { matchLabels: { "webhook-enabled": "true", }, }, }, }, { provider: k8sProvider }); // Step 3: Export Cluster Information // For ease of use, we export the kubeconfig of the cluster so you can interact with it via `kubectl`. export const kubeConfig = cluster.kubeconfig; // If there are resources from the Helm chart (like services or ingresses) that produce URLs, // you might want to export those as well for easy access.

    Let's explain the main components of this program:

    • awsx.eks.Cluster: This creates a new EKS cluster. The awsx package simplifies setting up an EKS cluster. Under the hood, it will create the necessary VPC, IAM roles, and Security Groups required for an EKS cluster.
    • k8s.Provider: This Pulumi provider allows us to interact with our Kubernetes cluster. We configure this provider with the kubeconfig we get from our newly created EKS cluster.
    • k8s.helm.v3.Chart: This is how we deploy a Helm chart to our Kubernetes cluster using Pulumi. We specify the name of the chart and any configuration values it requires.
    • export const kubeConfig: This line exports the generated kubeconfig, which you can use with kubectl to interact with your Kubernetes cluster.

    Remember to replace 'chart-name' with the name of your mutating webhook Helm chart and provide the Helm repository URL if it's hosted in a custom Helm repository.

    Before you run this program with Pulumi, you should ensure you have installed Pulumi, configured AWS credentials, and have Helm installed. To deploy your infrastructure, navigate to the directory where this file is saved and run pulumi up. This will provision the EKS cluster and deploy your Helm chart to it.

    For more information on the resources and classes used in this program, visit the Pulumi documentation for EKS in AWSX and Helm charts in Kubernetes.