Deploy the gke-pvm-killer helm chart on Rancher

Question

Pulumi · Accepted Answer

Deploying a Helm chart on a Rancher-managed Kubernetes cluster involves several steps. First, you need to have a Rancher server running and a Rancher-managed Kubernetes cluster available. The following Pulumi TypeScript program demonstrates how to deploy the `gke-pvm-killer` Helm chart onto a Rancher-managed Google Kubernetes Engine (GKE) cluster using Pulumi's Rancher2 provider.

Before running this Pulumi program, make sure you have the following prerequisites met:

1. Pulumi CLI installed and configured.
2. Access to a Rancher Server with necessary permissions to manage resources.
3. The Rancher API URL and a Rancher API token available (these will be used to authenticate Pulumi with your Rancher server).
4. A Kubernetes cluster managed by Rancher, with its `clusterId` known.

Now, let's go through the steps expressed in the code:

1. We'll import the necessary packages from Pulumi, including the Rancher2 provider.
2. We'll use the `rancher2.CatalogV2` resource to add a Helm chart repository to Rancher.
3. Then, we'll deploy the `gke-pvm-killer` Helm chart using the `rancher2.AppV2` resource, which represents a Helm chart deployment in Rancher.

Here's the TypeScript program:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as rancher2 from "@pulumi/rancher2";

// Replace the placeholders with your Rancher API URL and the token.
const rancherApiUrl = "https://your-rancher-server/v3";
const rancherBearerToken = "token-xxxxx";

// Create a new Rancher2 provider instance.
const rancherProvider = new rancher2.Provider("rancher", {
    apiUrl: rancherApiUrl,
    tokenKey: rancherBearerToken,
});

// Step 1: Adding the Helm chart repository to Rancher.
const helmRepo = new rancher2.CatalogV2("gke-pvm-killer-repo", {
    clusterId: "c-xxxxx", // Replace with your actual cluster ID.
    url: "https://helm-repo-url-containing-gke-pvm-killer", // Replace with the actual Helm repo URL.
    // Catalog definition here ...
}, { provider: rancherProvider });

// Step 2: Deploying the `gke-pvm-killer` Helm chart onto the Rancher-managed GKE cluster.
const helmChart = new rancher2.AppV2("gke-pvm-killer-app", {
    clusterId: "c-xxxxx", // Replace with your actual cluster ID.
    namespace: "default",
    repoName: helmRepo.name,
    chartName: "gke-pvm-killer",
    chartVersion: "1.0.0", // Specify the chart version you wish to deploy.
    // Chart values and other configuration...
}, { provider: rancherProvider });

// Export the Helm chart deployment details.
export const helmAppName = helmChart.name;
export const helmAppNamespace = helmChart.namespace;
```

In this program, don't forget to replace the placeholder values with your actual Rancher API URL, token, cluster ID, and the URL of the Helm repository that contains the `gke-pvm-killer` chart.

Once you run this Pulumi program, it will perform the following actions:
- Authenticate with your Rancher server using the Rancher2 provider.
- Add the specified Helm repository to your Rancher server.
- Deploy the `gke-pvm-killer` Helm chart to the specified namespace in your GKE cluster managed by Rancher.

Make sure to fill in the `chartVersion` with the version of the `gke-pvm-killer` chart you wish to deploy. You can also include additional configuration for the Helm chart deployment by setting `values` property in the `rancher2.AppV2` resource; these values would be specific to the `gke-pvm-killer` chart.

This program can be extended or modified to better fit your needs, e.g., setting up monitoring, alerting, or other Rancher resources.

To apply this Pulumi program, save the code in a file with a `.ts` extension, and use Pulumi CLI commands `pulumi up` to create or update the infrastructure, and `pulumi destroy` to tear it down when it's no longer needed.