Deploy the timing helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy a Helm chart on OpenShift using Pulumi, you would typically use the `kubernetes.helm.v3.Chart` resource from the Kubernetes provider. This Pulumi resource allows you to deploy Helm charts into a Kubernetes cluster, and OpenShift is a Kubernetes distribution that includes additional features.

The `Chart` resource is a representation of a Helm Chart installation. It provides a means to deploy a set of Kubernetes resources described by a Helm Chart and to keep those resources in a desired state.

Here's a detailed breakdown of how you can deploy a Helm Chart named "timing" to an OpenShift cluster using Pulumi with TypeScript:

1. **Set Up Pulumi TypeScript Project**: Before you begin, make sure you have Pulumi and the Pulumi CLI installed, along with kubectl command-line tool configured to access your OpenShift cluster. Create a Pulumi project by running `pulumi new typescript`.

2. **Kubernetes Provider**: Install the Kubernetes provider plugin and import it in your Pulumi program. This provider will interact with your OpenShift cluster.

3. **Create a Pulumi Stack**: Each deployment target can be represented by a "stack" in Pulumi terms.

4. **Helm Chart Resource**: Use the `kubernetes.helm.v3.Chart` resource to deploy the Helm chart. You will need to configure the `Chart` resource with the details of the Helm chart you are deploying, including the `repo` parameter if the chart is hosted on a remote Helm repository, and values for any configurable options.

Now, let's write the Pulumi program to deploy the "timing" Helm chart on OpenShift:

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

// The configuration values to pass to the Helm chart.
// Replace these with the values for your specific chart and scenario.
const chartValues = {
  // Insert the values here based on the 'timing' Helm chart requirements.
};

// Create a Helm Chart resource that deploys the 'timing' chart.
const timingChart = new k8s.helm.v3.Chart("timing-chart", {
  // If the 'timing' chart is part of a Helm repository, specify the repo URL here.
  // Otherwise, you can use the 'chart' parameter to specify a local path to the chart directory.
  repo: "repository-url",
  chart: "timing",
  version: "chart-version", // specify the version of the chart you want to deploy
  namespace: "target-namespace", // specify the namespace where you want to deploy the chart
  values: chartValues,
});

// Export the base URL for the application (if applicable)
export const appUrl = timingChart.getResourceProperty("v1/Service", "timing-service", "status");
```

In the above program:

- `"repository-url"` should be replaced with the URL of the repository where your "timing" chart is hosted.
- `"chart-version"` should be replaced with the version of the "timing" chart that you want to install.
- `"target-namespace"` should be the namespace in your OpenShift cluster where you want to deploy the chart. Ensure that this namespace exists in your cluster before you deploy.
- `chartValues` should be replaced with a JavaScript object containing configuration values specific to the "timing" chart you're deploying. This allows you to customize the deployment as necessary.

You will also want to ensure that your Pulumi program is authenticated with your OpenShift cluster, so it has the permissions to create resources. This typically involves setting up a `kubeconfig` file with the credentials to access your OpenShift cluster and pointing Pulumi to that configuration.

Once everything is set up, run the following commands to deploy your Helm chart:

```bash
pulumi up
```

If you specified an `appUrl` export, Pulumi will print the URL for your application, assuming it creates a `Service` with an external endpoint. You can then navigate to this URL in your browser to view the application hosted by your "timing" chart.