Deploy the sample-topology helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy a Helm chart on an OpenShift cluster using Pulumi, you'll utilize the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes provider. Helm charts are packages for Kubernetes resources, and `Chart` is a resource provided by Pulumi to install these packages into a Kubernetes cluster.

Before running the Pulumi program, you need to have:

- Pulumi CLI installed.
- Access to an OpenShift cluster with `kubectl` configured to connect to it.
- The Helm CLI installed if you're using Helm charts from your local filesystem or need to inspect the charts.

Here's a Pulumi program in TypeScript that demonstrates how to deploy a Helm chart named `sample-topology` onto an OpenShift cluster:

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

// Define the settings for our Helm chart deployment.
const helmChartName = 'sample-topology';
const helmChartVersion = '1.0.0'; // Specify the version of the chart.
const helmChartRepo = 'https://example.com/charts'; // URL to your Helm chart repository.
const releaseName = 'sample-topology-deployment';
const namespace = 'default'; // Change this to the namespace you want to deploy into.

// Create a Helm chart resource using the sample-topology chart from the specified repository.
const chart = new k8s.helm.v3.Chart(releaseName, {
  chart: helmChartName,
  version: helmChartVersion,
  fetchOpts: {
    repo: helmChartRepo,
  },
  namespace: namespace,
  // Values in this object will configure the Helm chart.
  // These should reflect any custom configuration you need for the sample-topology chart.
  values: {
    // Replace these with actual configuration values for the sample-topology chart
    service: {
      type: 'ClusterIP',
    },
    // More configuration values can be set here as needed.
  },
}, { provider: k8sProvider });

// Optionally, you can export the Helm release status.
export const helmReleaseStatus = chart.status;
```

- First, the required `@pulumi/kubernetes` package is imported.
- Then, various deployment settings are configured such as the chart name, version, and repository URL.
- The `k8s.helm.v3.Chart` class is used to instantiate a new Helm chart resource. You specify the name of the chart, the version, the repository where it's located, and other chart-specific configuration under the `values` field.
- Finally, the Helm release status is exported to check the deployment status.

You need to replace the `helmChartRepo` with the actual URL of your Helm chart repository and fill up the `values` object with the appropriate configurations for your chart.

Please note that this program assumes you have already set up and authenticated with your OpenShift cluster using `kubectl`. The Pulumi program will use your current Kubernetes context to interact with the cluster. It is also assumed here that your Helm chart is publicly accessible via a repository URL and that you're deploying to the `default` namespace. Adjust these as needed for your actual setup.