Deploy the pocketbase-helm helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `pocketbase-helm` Helm chart on an OpenShift cluster using Pulumi, you will utilize the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider. This resource allows you to deploy a Helm chart to a Kubernetes cluster, which in this case would be an OpenShift cluster.

Here's a high-level overview of the steps you'll follow in Pulumi:

1. Configure the Pulumi program to use the Kubernetes provider.
2. Define the Helm chart resource, specifying the `pocketbase-helm` chart and its settings.
3. Deploy the Helm chart to the OpenShift cluster.

Before starting, ensure that you have the following prerequisites in place:

- An OpenShift cluster with `kubectl` configured to communicate with it.
- Helm and Pulumi installed on your local machine.
- You are authenticated to your OpenShift cluster using `oc login` or `kubectl` configured with the correct context.

Below is the TypeScript Pulumi program for deploying the `pocketbase-helm` chart:

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

// Create a Kubernetes provider instance for the OpenShift cluster
const openshiftProvider = new k8s.Provider('openshiftProvider', {
  // Make sure `kubeconfig` is properly set to point to your OpenShift cluster
  // You can specify a `kubeconfig` file explicitly or assume it is in the default location
  kubeconfig: process.env.KUBECONFIG,
});

// Define the Helm chart resource for PocketBase
const pocketbaseChart = new k8s.helm.v3.Chart('pocketbase-helm', {
  // Set the chart name, repository, and version
  chart: 'pocketbase-helm',
  // Replace with your specific Helm chart repository URL
  repo: 'https://charts.example.com/',
  // Specify the chart version if needed, otherwise, the latest version will be deployed
  // version: '1.0.0', 
  // Include any custom values required for the PocketBase Helm chart
  values: {
    // Specify values based on the Helm chart's `values.yaml`
    // For example:
    // service: {
    //   type: 'ClusterIP',
    // },
    // persistence: {
    //   enabled: true,
    // },
  },
}, { provider: openshiftProvider });

// Export the base URL to access the deployed PocketBase application
export const pocketbaseUrl = pocketbaseChart.getResourceProperty(
  'v1/Service',
  'pocketbase-helm-pocketbase',
  'status'
).apply(status => {
  const ingress = status.loadBalancer.ingress[0];
  if (ingress.ip) {
    return `http://${ingress.ip}`;
  }
  return ingress.hostname ? `http://${ingress.hostname}` : undefined;
});
```

In this program:

- We import the `@pulumi/kubernetes` module, which contains the necessary classes and functions to interact with Kubernetes within Pulumi.
- We create a Kubernetes provider for the OpenShift cluster by providing the `kubeconfig` that points to the cluster.
- We instantiate a `Chart` resource, defining the Helm chart we want to deploy (`pocketbase-helm`) and the repository where the chart can be found.
- Within the `values` property, you can specify any configuration overrides necessary for your PocketBase deployment based on what's available in the Helm chart's `values.yaml`. Replace the example placeholders with the actual values appropriate for your use case.
- Lastly, we export a computed value that should resolve to the URL where the PocketBase service is accessible, assuming it's exposed via a LoadBalancer service. If your chart uses a different method to expose services (like a Route on OpenShift), you'll need to adjust the export logic to match that.

Remember to replace `'https://charts.example.com/'` with the actual URL of the repository where the `pocketbase-helm` chart is hosted, and update the `values` object with the appropriate values from the Helm chart you are deploying.

To apply this Pulumi program:

- Save the code in a file with a `.ts` extension.
- Run `pulumi up` in the directory containing your code to start the deployment process.
- Follow the on-screen prompts to preview and confirm the deployment.

If you're new to Pulumi and need more detailed guidance on setting up your Pulumi project, initializing a new stack, or managing your deployments, please refer to the [Pulumi documentation](https://www.pulumi.com/docs/) for comprehensive instructions.