Deploy the vhss helm chart on Google Kubernetes Engine (GKE)

Question

Pulumi · Accepted Answer

To deploy the `vhss` Helm chart on a Google Kubernetes Engine (GKE) cluster, we would typically go through the following steps:

1. Create a GKE cluster.
2. Install and configure Helm in your local environment (Pulumi does not install Helm for you).
3. Use the `kubernetes` provider in Pulumi to interact with the GKE cluster.
4. Define a Helm Release resource in Pulumi to deploy the `vhss` chart onto the GKE cluster.

Here's a detailed walkthrough of the program that accomplishes these steps:

- **`gcp.container.Cluster`**: This Pulumi resource represents a GKE cluster. We will set up a basic cluster with the required properties, such as name, location, and initial node count. You can customize the configuration to suit your needs, including machine types and node pool settings.

- **`kubernetes.helm.sh/v3.Release`**: This Pulumi resource represents a Helm chart release. We specify the chart name as `vhss` and the namespace where the chart should be deployed. The `values` property allows you to specify the Helm chart values you want to override.

Before running this code, ensure you have authenticated with GCP and set up your Pulumi environment. You will also need to have Helm installed if you wish to customize the chart before deployment or manage chart dependencies.

Now let's dive into the Pulumi TypeScript code:

```typescript
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("vhss-cluster", {
    initialNodeCount: 2,
    nodeVersion: "latest",
    minMasterVersion: "latest",
    location: "us-central1",
});

// 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: ${masterAuth[0].clusterCaCertificate}
    server: https://${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
`;
    });

// Create a Kubernetes Provider instance with the kubeconfig
const k8sProvider = new k8s.Provider("k8s-provider", {
    kubeconfig: kubeconfig,
});

// Deploy the vhss helm chart
const vhssRelease = new k8s.helm.v3.Release("vhss-release", {
    chart: "vhss",
    version: "1.0.0", // Specify the chart version you want to deploy
    namespace: "default", // Set the namespace where the chart will be installed
    // You can specify the values for the Helm chart if needed:
    // values: {
    //     key1: "value1",
    //     key2: "value2",
    // },
}, { provider: k8sProvider });

// Export the Helm Release status
export const helmReleaseStatus = vhssRelease.status;
```

This program performs the following actions:

- It initializes a new GKE cluster with the specified configuration.
- It generates the kubeconfig needed to interact with the newly created GKE cluster.
- It sets up a Kubernetes provider with this kubeconfig, which Pulumi will use for subsequent interactions with the cluster.
- It deploys the `vhss` Helm chart as a release into the default namespace of the cluster. If you have specific values you need to set for your Helm chart, you would pass them in the `values` object.

Run this program using the Pulumi CLI by executing `pulumi up`. Make sure to review the proposed changes before confirming you want to proceed.

To learn more about the resources used in this program, you can refer to the official Pulumi documentation:

- [gcp.container.Cluster](https://www.pulumi.com/registry/packages/gcp/api-docs/container/cluster/)
- [kubernetes.helm.v3.Release](https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/release/)

Remember, the above program assumes that you have the necessary permissions to create and manage GKE clusters and Helm releases in your GCP project, and that you have Pulumi and Helm set up on your machine.