Deploy the www helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `www` Helm chart on an OpenShift cluster using Pulumi, you will need to use the `kubernetes` package provided by Pulumi. This package allows you to manage Kubernetes resources, including deploying Helm charts.

Below is a TypeScript program that defines a `Chart` resource which deploys a Helm chart named `www` into an existing OpenShift cluster. For simplicity, the example assumes that you have an OpenShift cluster configured and the `kubeconfig` is set up to point to the correct cluster.

Firstly, ensure you have the `@pulumi/kubernetes` package installed:

```bash
npm install @pulumi/kubernetes
```

Here is the TypeScript Pulumi program that accomplishes the deployment of the `www` Helm chart:

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

// Define the namespace where the Helm chart will be installed
const namespace = "default"; // Replace with your desired namespace

// Deploy the 'www' Helm Chart
const wwwHelmChart = new k8s.helm.v3.Chart("www-helm-chart", {
    namespace: namespace,
    repo: "your_repo", // Replace with the name of the helm chart repository
    chart: "www", // The name of the chart
    // Specify the version of the Helm chart if necessary
    version: "1.2.3", // Replace with the desired chart version, if applicable
    // Specify custom values.yaml content for the chart values
    values: {
        // Provide configuration for the Helm chart values here
        key: "value",
        // For example, you might need to specify the image, tag, replicas, etc.
    },
    // Additional options if needed
}, { dependsOn: [/* other resources the Helm chart deployment depends on */] });

// Export the Helm chart status
export const helmChartStatus = wwwHelmChart.status;
```

Explanation:
1. The Pulumi Kubernetes package is imported as `k8s`.
2. The `wwwHelmChart` constant represents the Helm chart resource you're deploying. You need to replace `your_repo` with the name of the Helm repository where the `www` chart is hosted and specify any other necessary chart information.
3. The `namespace` designates where in the OpenShift cluster the Helm chart will be deployed. In this example, it is set to deploy to the `default` namespace.
4. The `values` object provides the configuration for your Helm chart. This is equivalent to the `values.yaml` file when doing a regular Helm deployment. Customize this based on the chart's requirements.
5. The `version` property is optional but recommended to ensure that the correct chart version is deployed.
6. The `export` statement is optional and allows you to output the status of the Helm chart deployment, which can then be viewed after deployment with the `pulumi stack output` command.

Remember to replace placeholders like `your_repo`, `1.2.3`, and `key: "value"` with actual values specific to the `www` Helm chart you intend to deploy.

Before running this program, you would need to authenticate with your OpenShift cluster using a method such as the `oc login` command or by setting the `KUBECONFIG` environment variable. Once authenticated, you can run the Pulumi program using the Pulumi CLI:

```bash
pulumi up
```

This command will start the deployment process. If everything is configured correctly, Pulumi will deploy the `www` Helm chart to your OpenShift cluster.