Deploy the turborepo-remote-cache helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy a Helm chart on an OpenShift cluster using Pulumi, you'll need to take a few steps. First, ensure you have access to an OpenShift cluster and that you're authenticated with `oc` CLI or have the appropriate `kubeconfig` file to interact with your cluster.

We will use Pulumi's Kubernetes provider to deploy the `turborepo-remote-cache` Helm chart. The `kubernetes.helm.v3.Chart` resource allows you to deploy Helm charts into a Kubernetes cluster. Helm charts are packages of pre-configured Kubernetes resources.

Here's a TypeScript program that performs the deployment:

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

const projectName = "turborepo-remote-cache";

// For Helm charts hosted in a remote repository, you can specify the `repo` parameter.
// If the Helm chart is in your local directory or a private repository, you'd need to adjust
// the `path` or `repositoryOpts` to point to the correct location.
const turborepoRemoteCache = new k8s.helm.v3.Chart(projectName, {
    chart: "your-chart-name", // Specify your chart name here
    version: "your-chart-version", // Specify the chart version
    namespace: "your-namespace", // Specify the namespace to install the chart into
    // When using a remote repository, use `repo` to specify the Helm repository URL.
    // For example: repo: "https://your-helm-repo.com/charts"
    // Use the `fetchOpts` parameter if you need to provide authentication details or other fetch options.
    fetchOpts: {
        repo: "your-repo-url",
        // Include additional options as needed, such as authentication details.
    },
    // If the chart requires custom configuration, use `values` to supply them.
    values: {
        // Specify your configuration options for the turborepo-remote-cache Helm chart
    },
});

// Export the resources' properties to get access to them outside Pulumi.
export const remoteCacheUrl = turborepoRemoteCache.getResourceProperty("v1/Service", "turborepo-remote-cache", "status");

```

Here's a brief explanation of the code:

- We import the Pulumi Kubernetes (`@pulumi/kubernetes`) package, which allows us to interact with Kubernetes clusters using Pulumi.
- The `Chart` class from the module `kubernetes.helm.v3` is instantiated to create a new Helm chart deployment. This class abstracts away much of the complexity behind deploying Helm charts.
- We specify the chart name and version. You'd replace `"your-chart-name"` and `"your-chart-version"` with the actual name and version of the `turborepo-remote-cache` chart you wish to deploy.
- The `namespace` parameter defines the namespace in OpenShift where the Helm chart should be deployed. If it doesn't exist, Helm will create it.
- The `repo` option within `fetchOpts` is where you'd specify the URL to your Helm chart's repository. If your chart requires authentication, or there are other specific fetch options, you'd add them within the `fetchOpts` object.
- The `values` object lets you configure the Helm chart with the specific values you want to override or set, similar to how you would use a custom `values.yaml` file with Helm CLI.

After you have configured your Pulumi program with the actual details specific to your Helm chart and OpenShift cluster, run the program using the Pulumi CLI:

1. Initialize a new Pulumi project if you haven't already.
2. Install the necessary NPM package: `@pulumi/kubernetes`.
3. Place the code in a `index.ts` file within your Pulumi project.
4. Run `pulumi up` to execute the deployment.

Make sure to replace placeholders like `your-chart-name`, `your-chart-version`, `your-namespace`, and `your-repo-url` with the actual values before running the program.

The `export` statement at the end of the code is used to output properties of the deployed resources that can be accessed outside of Pulumi. In this case, it's attempting to export the URL of the remote cache service created by the Helm chart, although you'd need to adjust the details here based on what you want to export and what resources the Helm chart creates.

Remember, Pulumi programs are declarative; you describe what resources should exist, and Pulumi ensures that the actual state of the cluster matches your desired state.