Deploy the ratedpower helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy a Helm chart on an OpenShift cluster using Pulumi, we'll use the `kubernetes` package which provides the necessary resources for interacting with Kubernetes, including OpenShift since it's a Kubernetes distribution. Specifically, we'll use the `Chart` resource from the `kubernetes.helm.sh/v3` module to deploy a Helm chart.

Here's a step-by-step guide and the corresponding Pulumi program written in TypeScript to achieve your deployment:

### Step 1: Install Pulumi and Set Up Your Environment
Before writing the Pulumi program, ensure that you have [Pulumi installed](https://www.pulumi.com/docs/get-started/install/) and you're logged into the [Pulumi service](https://app.pulumi.com).

### Step 2: Configure Access to Your OpenShift Cluster
Make sure you're able to access your OpenShift cluster using `kubectl`. Pulumi uses your existing `kubeconfig` file to interact with your Kubernetes cluster.

### Step 3: Create a New Pulumi Project
Run `pulumi new typescript` in your terminal and follow the prompts to create a new Pulumi TypeScript project.

### Step 4: Write the Pulumi Code

The program below assumes you have an existing Helm chart called 'ratedpower' that you want to deploy to your OpenShift cluster. The chart could presumably be hosted on a Helm repo that you have access to, or it could be stored locally.

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

// Create a Helm Chart resource using the `ratedpower` chart.
const ratedPowerChart = new k8s.helm.v3.Chart("ratedpower", {
    // The repository where your chart is located.
    // If your chart is stored locally, you can use the `path` parameter instead of `repo`.
    repo: "your_helm_chart_repo_url",  // Replace with the URL of your Helm chart repository
    chart: "ratedpower",
    version: "1.0.0", // Replace with the exact chart version you want to deploy
    namespace: "default",  // Replace with the namespace where you want to deploy the chart
    // Set chart values here to override defaults in `values.yaml`.
    values: {
        key: "value",
        // Place your custom values here.
    },
});

// To access the deployment, for instance, a URL or an IP address, we might have to extract
// the related information, depending on how the Helm chart exposes the service.
export const chartDeployment = ratedPowerChart.getResourceProperty("v1/Service", "ratedpower", "status");
```

### Explanation of the Pulumi Program:
- We import the Pulumi Kubernetes SDK, allowing us to create Kubernetes resources within our code.
- We instantiate a new Helm `Chart` resource, which represents the `ratedpower` Helm chart we want to deploy. We specify several parameters including:
  - `repo`: The URL to the Helm chart repository. Replace `"your_helm_chart_repo_url"` with the actual URL.
  - `chart`: The name of the chart. In this case, it's `"ratedpower"`.
  - `version`: The specific version of the chart you want to deploy.
  - `namespace`: The intended Kubernetes namespace where the chart should reside. If it doesn't exist, Pulumi will create it when applying the program.
  - `values`: A set of configuration values that overrides the defaults in the chart's `values.yaml` file. You need to replace `"key"` and `"value"` with your specific configuration.

After setting up your Pulumi program, you would run it using the Pulumi CLI:

1. Run `pulumi up` to preview and deploy the changes.
2. During the deployment, Pulumi will show you a preview of what will be created. Confirm that you want to create the resources.

### Post-Deployment:
After the deployment, Pulumi provides you with the outputs you have exported from the program. In this case, it might provide access details like the external IP or URL pointing to the `ratedpower` service, depending on what the Helm chart defines.

Keep this as a reference, and adjust the resource properties to align with your specific Helm chart and OpenShift cluster setup. If you have additional configuration files or requirements, such as custom service accounts, cluster roles, or role bindings related to OpenShift security contexts, you might need to include additional resources in your Pulumi program.