Deploy the zookeeper-exporter helm chart on Google Kubernetes Engine (GKE)

To deploy the zookeeper-exporter Helm chart on Google Kubernetes Engine (GKE) using Pulumi, you will follow these steps:

1. Set up a new GKE cluster or use an existing one where you want to deploy your Helm chart.
2. Install the Helm chart onto your GKE cluster using Pulumi's kubernetes package.

We'll begin by creating a GKE cluster. This requires setting up the necessary GCP resources and configurations. To do this, you will use google-native.container.v1.Cluster to create the cluster and google-native.container.v1.NodePool to create node pools if necessary.

Once the GKE cluster is ready, you will proceed to deploy the zookeeper-exporter Helm chart. The kubernetes.helm.v3.Chart resource from the @pulumi/kubernetes package will be used for this task. It abstracts away the complexity of deploying Helm charts.

Here's the full Pulumi program written in TypeScript that accomplishes this:

import * as gcp from "@pulumi/gcp";
import * as kubernetes from "@pulumi/kubernetes";
import * as pulumi from "@pulumi/pulumi";

// Step 1: Create a GKE Cluster
const cluster = new gcp.container.Cluster("gke-cluster", {
    initialNodeCount: 1,
    minMasterVersion: "latest", // Use the latest GKE version; alternatively, specify a concrete version
    nodeVersion: "latest",
    nodeConfig: {
        machineType: "n1-standard-1", // This is a default machine type; adjust as required
        oauthScopes: [
            "https://www.googleapis.com/auth/compute",
            "https://www.googleapis.com/auth/devstorage.read_only",
            "https://www.googleapis.com/auth/logging.write",
            "https://www.googleapis.com/auth/monitoring"
        ],
    },
});

// Export the Cluster name
export const clusterName = cluster.name;

// Obtain the k8s config for the newly created cluster
const k8sConfig = 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
`;
});

// Step 2: Deploy zookeeper-exporter Helm chart

// Define the settings for our Helm chart, including the zookeeper endpoint
const zookeeperExporterChart = new kubernetes.helm.v3.Chart("zookeeper-exporter", {
    chart: "zookeeper-exporter",
    version: "1.0.0", // The version of the Helm chart; replace with the desired version
    fetchOpts: {
        repo: "https://helm-repository-url", // Replace with your Helm repository URL
    },
    values: {
        // Specify any custom values required for the zookeeper-exporter chart
    },
}, { provider: new kubernetes.Provider("gke-k8s", { kubeconfig: k8sConfig }) });

// Export the Helm chart deployment name
export const zookeeperExporterChartName = zookeeperExporterChart.name;

In this program:

• A new GKE cluster named gke-cluster is created. The initialNodeCount specifies the number of nodes. minMasterVersion and nodeVersion are set to latest, which means it will pick the latest available version for the master and nodes, respectively.

• GKE cluster configuration including machine type and OAuth scopes are specified under nodeConfig. You can adjust machine types, scopes, and other settings according to your requirements.

• The k8s config is constructed for the newly created GKE cluster, which includes cluster endpoint and authentication data.

• A new Helm chart deployment for zookeeper-exporter is initiated. You need to replace "https://helm-repository-url" with the actual repository URL where your zookeeper-exporter Helm chart is located.

• You can specify custom values for the Zookeeper Exporter Helm chart under the values object in the Helm chart resource. This can include configurations specific to the zookeeper-exporter, such as resource limits or service types.

When you run this program with Pulumi (after authenticating with GCP), it will provision a new GKE cluster and deploy the zookeeper-exporter Helm chart. The export statements will output the GKE cluster name and Helm release name when the deployment process is completed.