Deploy the yumimap helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `yumimap` Helm chart on an OpenShift cluster using Pulumi in TypeScript, we'll use the `kubernetes.helm.sh/v3.Chart` resource from the Pulumi Kubernetes provider. This resource allows us to deploy Helm charts in a Kubernetes cluster.

First, ensure you have the necessary prerequisites:
- An OpenShift cluster you have access to.
- The `oc` command-line tool configured to communicate with your OpenShift cluster.
- Node.js and NPM installed.
- The Pulumi CLI installed.

Here's the step-by-step process of what we're going to do:

1. Set up a new Pulumi project and install necessary dependencies.
2. Use the `pulumi/kubernetes` package to interact with Kubernetes resources.
3. Create a Helm Chart resource that specifies the `yumimap` chart.

Here is the program that demonstrates how to do this:

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

// Step 1: Instantiate the OpenShift cluster provider.
// Note: You must configure `kubectl` to communicate with the OpenShift cluster.
const openshiftProvider = new k8s.Provider("openshift", {
    // If you have multiple kubeconfig files or contexts, specify which one to use below.
    // kubeconfig: 'path-to-kubeconfig-file', // Uncomment and update if necessary
});

// Step 2: Create an instance of the Helm Chart to deploy the 'yumimap' chart.
const yumimapChart = new k8s.helm.sh.v3.Chart("yumimap", {
    // Specify the chart repository and name.
    // For instance, if it's publicly available in a repository, specify the repository URL
    // This is an example with placeholder values; adjust them to point to the actual location of the yumimap chart.
    chart: "yumimap",
    version: "1.0.0",
    fetchOpts: {
        // Update with actual repository options.
        repo: "https://charts.example.com/", // Replace with the yumimap Helm chart repository
    },
    namespace: "default", // Set the proper namespace, if it's different than the 'default'.
    // Values in Helm allow you to specify configuration for your chart.
    values: {
        // Replace with actual configuration values
        // key: "value",
    },
}, { provider: openshiftProvider }); // Make sure to pass the configured OpenShift provider.

// Step 3: Export the URL for accessing the deployed application, if applicable.
// This will depend on the nature of the 'yumimap' chart and whether it exposes an endpoint or service.
// Here's an example of how to export a URL from a Service named 'yumimap-service'.
const service = yumimapChart.getResource("v1/Service", "yumimap-service");
export const url = service.status.loadBalancer.ingress[0].hostname;

```

This TypeScript program accomplishes the following:

- **Provider Initialization:** Connects to your OpenShift cluster by using the `kubectl` configuration.
- **Helm Chart Deployment:** Creates a new Helm chart instance for `yumimap`. You will need to specify the actual chart repository and version that matches the `yumimap` chart's details.
- **Configuration Values:** Allows specifying custom values for the Helm chart's deployment, which enables you to customize the deployment based on your needs.
- **Exporting Outputs:** If the `yumimap` chart exposes any services and you want their URLs to be accessible after deployment, you can export them. They are printed to the console after the deployment completes.

Remember to replace any placeholder values with actual values that pertain to the `yumimap` Helm chart's location and configuration.

To run the program:

1. Create a new Pulumi project using `pulumi new`.
2. Replace the contents of `index.ts` with the code above, after making necessary adjustments for the chart's details and the cluster's configuration.
3. Run `pulumi up` to deploy the Helm chart to your OpenShift cluster.

The Pulumi CLI will preview the changes and prompt you to confirm them before making any modifications to your cluster. If the preview looks correct, you can proceed with the deployment.

After the deployment is successful, you can use `pulumi stack output` to retrieve any exported outputs, like a URL for the `yumimap` service if applicable.