Deploy the k8s-pvc helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy a Helm chart for a Kubernetes PersistentVolumeClaim (PVC) on OpenShift using Pulumi, we'll use the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes provider. This resource allows you to deploy Helm charts in a declarative way directly from your Pulumi program.

Here's how to deploy a PVC using a Helm chart in TypeScript with Pulumi:

- First, we will create a new project using Pulumi. We'll define the Helm chart that we want to deploy. You'll need to specify the chart name, which in your case is presumably `k8s-pvc` (the actual name might vary depending on the chart's repository).
- Then, you'll need to set the appropriate values for the PVC, which could involve specifying the storage size and access modes among other parameters.
- Since you're using OpenShift, ensure you have access to your OpenShift cluster and the right configuration context set for `kubectl`.

Here's a TypeScript program that accomplishes this:

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

// Create a Helm Chart resource that deploys a PVC.
const pvcChart = new k8s.helm.v3.Chart("k8s-pvc", {
    // Replace 'REPO_URL' with the URL of the Helm repository that contains the 'k8s-pvc' chart.
    // Also, ensure to replace 'CHART_VERSION' with the version number of the chart you wish to deploy.
    repo: "REPO_URL",
    chart: "k8s-pvc",
    version: "CHART_VERSION",
    // Specify the namespace if required, default namespace is 'default'
    namespace: "my-namespace",
    // Set the values for the Helm chart.
    values: {
        // This is an example of how you might set PVC size;
        // you'll need to adjust it to the actual values required by the 'k8s-pvc' chart.
        size: "10Gi",
        accessModes: ["ReadWriteOnce"],
        // Additional PVC configuration can be added here.
    },
    // If the Helm chart has any dependencies or needs any fetching options, specify them here.
    fetchOpts: {
        // Set the fetch options for Helm to retrieve the chart if needed.
        repo: "https://charts.helm.sh/stable",
    },
    // Include any custom transformations or other configurations as needed.
});

// Export the chart's name and status
export const chartName = pvcChart.id;
```

Please replace `REPO_URL` with the actual repository URL where the `k8s-pvc` Helm chart is hosted, as well as `CHART_VERSION` with the specific chart version you want to deploy. Modify the `values` to fit the requirements for creating your PVC, such as size and access modes.

Make sure you have Pulumi installed and configured for use with your Kubernetes cluster. To run this Pulumi program:

1. Save the TypeScript code to a file (e.g., `index.ts`).
2. Install the Pulumi CLI and set up your Pulumi account.
3. Install Node.js and NPM.
4. Create a new directory for your project, and initialize a new Pulumi project in it.
5. Install the `@pulumi/kubernetes` package using NPM.
6. Place the code in the `index.ts` file in your Pulumi project directory.
7. Use the command `pulumi up` to preview and deploy your resources.

The program will invoke Pulumi to deploy the PVC to the configured Kubernetes cluster, which in your case will be an OpenShift cluster. Ensure you have the correct Kubernetes configuration context for your OpenShift cluster. Pulumi uses the same configuration that `kubectl` uses to interact with your Kubernetes cluster.