Deploy the distributed-jmeter helm chart on Google Kubernetes Engine (GKE)

Question

Pulumi · Accepted Answer

To deploy the distributed-jmeter Helm chart on Google Kubernetes Engine (GKE), you’ll go through a few key steps. I will guide you through the process of writing a Pulumi program in TypeScript that accomplishes the following:

1. Creates a GKE cluster.
2. Deploys the distributed-jmeter Helm chart to the created cluster.

### Step 1: Create a GKE Cluster

We will use the `gcp.container.Cluster` resource to create a new GKE cluster. This is an abstract representation of a cluster on GCP, which allows you to configure aspects like the location, node count, machine type, and networking.

### Step 2: Deploy Helm Chart

Once we have the cluster up and running, we will deploy the distributed-jmeter Helm chart. We’ll use the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider to deploy the chart from a known repository.

Make sure you have Pulumi and the required GCP CLI tools installed and configured on your system. The Pulumi program will assume your environment is properly authenticated to create resources in your GCP project.

Here's how you can accomplish the above steps using Pulumi:

```typescript
import * as gcp from "@pulumi/gcp";
import * as k8s from "@pulumi/kubernetes";
import * as pulumi from "@pulumi/pulumi";

// Set up a GKE cluster
const cluster = new gcp.container.Cluster("jmeter-cluster", {
    // Specific GKE configuration options here:
    // location, machineType, initialNodeCount, etc.
    initialNodeCount: 2,
    minMasterVersion: "latest",
    nodeVersion: "latest",
    nodeConfig: {
        machineType: "n1-standard-1", // Minimal requirements (Change as needed)
        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;

// Export the Kubeconfig to access the Cluster
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
`;
    });

// Initialize a new k8s provider using the kubeconfig obtained from the GKE cluster
const k8sProvider = new k8s.Provider("gkeK8s", {
    kubeconfig: kubeconfig,
});

// Deploy the distributed-jmeter helm chart using the Kubernetes provider
const jmeterChart = new k8s.helm.v3.Chart("distributed-jmeter", {
    chart: "distributed-jmeter",
    // Version and values can be adjusted accordingly
    version: "x.x.x", // specify the chart version
    fetchOpts: {
        repo: "https://helm-repository/url/to/distributed-jmeter/chart", // specify the repo URL
    },
    // Chart values and overrides here:
    // For example, you can specify the number of slaves, configurations, etc.
    values: {
        // ...chart specific values
    },
}, { provider: k8sProvider });

// (Optional) Export the Helm chart status
export const chartStatus = jmeterChart.status;
```

This program will:

- Create a GKE cluster with the name "jmeter-cluster".
- Export the `kubeconfig` which allows you to interact with your cluster using `kubectl`.
- Initialize a Pulumi Kubernetes provider to interact with the GKE cluster.
- Deploy the distributed-jmeter Helm chart to the cluster.

Make sure to replace `"x.x.x"` with the actual version of the chart, and fill in the correct repo URL under `fetchOpts`.

Please adjust the GKE cluster specifications and the helm chart configurations according to your actual requirements. The values you provide to the `Cluster` and `Chart` resources can be modified to fit the specific needs of your distributed-jmeter setup.

To run this Pulumi program:

1. Save the TypeScript code to a file, e.g., `index.ts`.
2. Install the required Pulumi packages if you haven't already:
   ```bash
   npm install @pulumi/pulumi @pulumi/gcp @pulumi/kubernetes
   ```
3. Run the Pulumi program to create the GKE cluster and deploy your chart:
   ```bash
   pulumi up
   ```

This will prompt you to review the changes Pulumi plans to make to your infrastructure. If everything looks good, you can confirm the deployment, and Pulumi will create the resources for you.