Deploy the openshift-namespaces helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `openshift-namespaces` Helm chart on an OpenShift cluster using Pulumi, you will be utilizing the `kubernetes.helm.v3.Chart` class from Pulumi's Kubernetes provider. This class allows you to deploy Helm charts to your Kubernetes or OpenShift cluster.

Below is a program written in TypeScript that demonstrates how you would use Pulumi to deploy a Helm chart representing multiple `namespaces` in an OpenShift environment. Before you proceed, make sure you have the OpenShift CLI tool (`oc`) configured to access your OpenShift cluster, and you've installed Pulumi and logged in.

The key steps that the program performs are:
1. Import required Pulumi and Kubernetes packages.
2. Create a new Helm chart resource `openshift-namespaces` from the `kubernetes.helm.v3.Chart` class.
3. Specify the chart name (assuming it is `openshift-namespaces`), its version (optional, if you want to use a specific version), and any custom values you wish to override within the chart (represented as an object in the `values` property).

Here is the TypeScript program implementing these steps:

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

// Define the settings for the Helm chart.
const chartName = "openshift-namespaces";  // Replace with the correct Helm chart name
const chartVersion = "1.0.0";              // Replace with the desired chart version, if known
const namespace = "default";               // Replace with the target namespace for deployment

// Deploy the Helm chart.
const helmChart = new k8s.helm.v3.Chart(chartName, {
    chart: chartName,
    version: chartVersion,
    namespace: namespace,
    // Assuming the Helm chart requires some custom values, provide them in the values object.
    // Replace this with actual values required by the 'openshift-namespaces' Helm chart.
    values: {
        // exampleValue1: "value1",
        // exampleValue2: "value2",
        // Add other custom values as needed
    },
}, {
    // This option protects against unintented updates to resources managed by this Helm chart.
    protect: true
});

// Export the base URL for the Helm chart, which is useful for debugging purposes.
export const chartBaseUrl = helmChart.getResourceProperty("v1/Service", `${namespace}/${chartName}`, "status").apply(status => status.loadBalancer.ingress[0].ip || status.loadBalancer.ingress[0].hostname);

```

This program initializes a `Helm chart` resource using Pulumi's Kubernetes provider. The `new k8s.helm.v3.Chart` syntax is creating a new instance of the Helm chart. The first argument is the local name used to refer to the chart in the code. The second argument is an object with settings, which includes the chart name, optional version, the target namespace, and any chart values you want to override.

The `values` field within the Helm Chart is where you would add any necessary values that configure the Helm chart to your needs. Typically, these would map to the values found in a Helm chart's `values.yaml` file.

Before running the Pulumi program, you will need to install the `@pulumi/kubernetes` package using npm, if you haven't already done so:

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

After the program is ready, you can run it with Pulumi CLI commands `pulumi up` to preview and deploy your infrastructure. Pulumi will provide a detailed preview of all the Kubernetes resources that will be created by the Helm chart and, upon confirmation, will provision the resources in your OpenShift cluster.

Please keep in mind that this is a generalized Pulumi program and you'd need to adjust the `chartName`, `version`, and `values` fields to reflect the specific Helm chart you're deploying and the configuration values it expects.