1. Deploy the guestbook helm chart on Google Kubernetes Engine (GKE)


    To deploy a Helm chart on Google Kubernetes Engine (GKE), we will execute the following steps:

    1. Set up a GKE cluster: We first need to create a cluster where the Helm chart will be deployed. To do this, we'll use the google-native.container.v1.Cluster resource, which represents a GKE cluster in Google Cloud.

    2. Install the Helm Chart: Once our cluster is up and running, we can deploy the Helm chart on it. For this task, we'll use the kubernetes.helm.v3.Chart resource, which allows us to deploy Helm charts in a Kubernetes cluster managed by Pulumi.

    Here's the TypeScript program that performs these actions:

    import * as pulumi from "@pulumi/pulumi"; import * as gcp from "@pulumi/gcp"; import * as k8s from "@pulumi/kubernetes"; // Create a GKE cluster const cluster = new gcp.container.Cluster("guestbook-cluster", { initialNodeCount: 2, nodeVersion: "latest", // Specify the desired version for your nodes minMasterVersion: "latest", // Specify the desired version for your master }); // Export the Cluster name export const clusterName = cluster.name; // Once the cluster is created, we can find out the endpoint, status, and kubeconfig required to manage the cluster using `kubectl`. export const kubeconfig = pulumi.all([cluster.name, cluster.endpoint, cluster.masterAuth]).apply(([name, endpoint, masterAuth]) => { const context = `${gcp.config.project}_${gcp.config.zone}_${name}`; return `apiVersion: v1 clusters: - cluster: certificate-authority-data: ${masterAuth.clusterCaCertificate} server: https://${endpoint} name: ${context} contexts: - context: cluster: ${context} user: ${context} name: ${context} current-context: ${context} kind: Config preferences: {} users: - name: ${context} user: auth-provider: config: cmd-args: config config-helper --format=json cmd-path: gcloud expiry-key: '{.credential.token_expiry}' token-key: '{.credential.access_token}' name: gcp `; }); // Deploy the Helm chart to the GKE cluster we created. // Replace "REPOSITORY_NAME" and "CHART_NAME" with the actual name and chart from the Helm repository you want to use. const guestbookChart = new k8s.helm.v3.Chart("guestbook", { chart: "guestbook", version: "0.2.0", // Specify the version of the chart you want to deploy fetchOpts: { repo: "http://storage.googleapis.com/kubernetes-charts", // The repository where your Helm chart is located }, }, { provider: new k8s.Provider("k8s-provider", { kubeconfig }) }); // Export the Guestbook chart resources export const guestbookChartResources = guestbookChart.resources;

    This program launches a GKE cluster and deploys the guestbook Helm chart to it. Let's break this down:

    • GKE Cluster: We create a GKE cluster with two nodes using the google-native.container.v1.Cluster resource, specifying the node version to signify the Kubernetes version running on each node within our cluster.

    • Kubeconfig: This block generates the kubeconfig file needed to interact with our GKE cluster programmatically. It includes authentication data retrieved from the created GKE cluster, setting the current context to our GKE cluster. We will use this kubeconfig to communicate with our Kubernetes cluster.

    • Helm Chart Deployment: We use the k8s.helm.v3.Chart class from the @pulumi/kubernetes package to deploy the guestbook Helm chart. We fetch the chart from the specified Helm chart repository.

    Please replace "REPOSITORY_NAME" and "CHART_NAME" with the actual names relevant to the Helm chart you are deploying. You might also need to adjust the version number to match the available Helm chart version in the repository.

    To execute this program, save it as index.ts, ensure you have Pulumi installed and configured with appropriate GCP access, and then run:

    pulumi up

    Pulumi will perform the deployment, showing you the progress in the terminal. After the deployment successfully completes, you will see the output of the kubeconfig and other exported properties. You can use the generated kubeconfig with kubectl to manage your cluster:

    kubectl --kubeconfig generated-kubeconfig.yaml get pods

    Please note that Helm charts can have their own set of values you can override. Check out the specific Helm chart documentation you're trying to deploy to understand the default values and possible customizations.