Deploy the laravel-worker helm chart on Google Kubernetes Engine (GKE)

Question

Pulumi · Accepted Answer

Creating a Google Kubernetes Engine (GKE) cluster and deploying a Helm chart to it can be done using Pulumi's modern infrastructure as code approach. Before diving into the code, here's an overview of the steps we'll take:

1. **Set up GKE Cluster**: We will create a GKE cluster using the `google-native.container/v1.Cluster` resource. This is where our workloads will run.

2. **Configure Kubernetes Provider**: After setting up the GKE cluster, we need a way to communicate with the cluster. Pulumi does this through a Kubernetes provider, which uses the kubeconfig file generated during the creation of the cluster.

3. **Install Helm Chart**: Finally, we will deploy the laravel-worker Helm chart to the GKE cluster. Helm charts are packages for Kubernetes applications that allow for easy application deployment. We will use the Pulumi resource in the `kubernetes` package to apply this Helm chart to our cluster.

Let's translate this into a Pulumi TypeScript program:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as gcp from "@pulumi/gcp";
import { Cluster } from "@pulumi/google-native/container/v1";
import * as k8s from "@pulumi/kubernetes";

// Step 1: Create a GKE cluster
const cluster = new Cluster("gke-cluster", {
    // ... specify your GKE cluster configuration ...
    // ... you might want to set the initial number of nodes, machine type, network settings, etc. ...

initialNodeCount: 1,
    // This is the minimum required configuration. You'll likely want to specify additional settings.
});

// Step 2: Configure Kubernetes Provider
const k8sProvider = new k8s.Provider("k8s-provider", {
    kubeconfig: cluster.name.apply(name => {
        const cluster = gcp.container.getCluster({
            name: name,
            location: "us-central1-a", // replace with the location of your GKE cluster
        });
        return cluster.kubeConfigRaw;
    }),
});

// Step 3: Deploy laravel-worker Helm chart
const laravelWorkerChart = new k8s.helm.v3.Chart("laravel-worker-chart", {
    chart: "laravel-worker",
    // Specify the chart version if needed
    // version: "x.y.z",
    // Values to pass to the helm chart
    values: {
        // ... specify your helm chart values ...
    },
}, { provider: k8sProvider });

// Export the Cluster name and Kubeconfig
export const clusterName = cluster.name;
export const kubeConfig = cluster.name.apply(name => gcp.container.getCluster({
    name: name,
    location: "us-central1-a", // replace with the location of your GKE cluster
}).then(cluster => cluster.kubeConfigRaw));
```

### Explanation

- **GKE Cluster Creation**: We are using the `Cluster` resource from the Google Native Pulumi provider to create a new Kubernetes cluster on Google Cloud.
- **Configure Kubernetes Provider**: We use the Pulumi Kubernetes provider to interact with our GKE cluster. It requires a `kubeconfig` which we obtain from the GKE cluster's output properties.
- **Helm Chart Deployment**: With our `k8sProvider` configured, we next deploy a helm chart. In this example, we simply specify the name `laravel-worker`, which we assume is the name of the chart in a Helm repository that Pulumi can access. If the chart requires specific configuration parameters (passed via `values`), you would specify them here.
- **Exports**: We export the cluster name and the raw kubeconfig. The kubeconfig is particularly sensitive and, in a production scenario, should be treated with care.

Please note that you will need to replace placeholders with the actual values specific to your deployment, such as the location of the cluster, the version of the Helm chart, and any values the Helm chart requires.

Before running this program, ensure that the Pulumi CLI and GCP SDK are installed and configured correctly on your system.