Deploy the openshift-oauth-proxy helm chart on Opensshift

Question

Pulumi · Accepted Answer

Deploying the `openshift-oauth-proxy` Helm chart on OpenShift with Pulumi is similar to deploying any Helm chart on a Kubernetes cluster, with some additional OpenShift-specific considerations.

To deploy a Helm chart on an OpenShift cluster using Pulumi, you'll typically perform the following steps:

1. Import the necessary packages.
2. Configure the Pulumi Kubernetes provider to connect to your OpenShift cluster.
3. Use the `Chart` resource from the Pulumi Kubernetes SDK to deploy your Helm chart.

Here is a step-by-step TypeScript program that you can use as a guide to deploy the `openshift-oauth-proxy` Helm chart on an OpenShift cluster:

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

// Step 1: Configure your OpenShift cluster's kubeconfig
// Make sure that your kubeconfig is properly configured to connect to your OpenShift cluster.
// This example assumes that you have set up your kubeconfig to point to your OpenShift cluster
// and that Pulumi is able to use it to deploy resources.

// Step 2: Create a new Kubernetes provider instance for OpenShift.
// Since OpenShift is effectively a Kubernetes distribution, we can use Pulumi's Kubernetes provider.
const openshiftProvider = new k8s.Provider('openshiftProvider', {
  // Pulumi reads the kubeconfig from the KUBECONFIG environment variable or the default kubeconfig location.
});

// Step 3: Deploy the openshift-oauth-proxy Helm chart.
// You would specify the repository and chart name along with any values you want to override in the chart.
const oauthProxyChart = new k8s.helm.v3.Chart('oauthProxyChart', {
    chart: 'openshift-oauth-proxy',
    // Specify the repository url where the chart is located.
    fetchOpts: {
        repo: 'https://example.com/helm-charts', // Replace with the correct repository URL.
    },
    // Provide any custom values you need for the openshift-oauth-proxy chart.
    values: {
        // Sample values. Provide the actual values required by the chart.
        // key: value,
    },
    // Set the namespace where you want to deploy the chart.
    namespace: 'default', // Replace with the target OpenShift namespace.
}, { provider: openshiftProvider });

// Export any output needed, such as the deployment URL or status.
export const chartStatus = oauthProxyChart.status;

```

Explanation of the code:

1. The `@pulumi/kubernetes` package is imported to enable communication with the Kubernetes API, which OpenShift uses.

2. A `Provider` object representing the OpenShift cluster is created using the default kubeconfig settings, where Pulumi will interact with OpenShift's Kubernetes API.

3. The `Chart` resource is instantiated to deploy a Helm chart. The `chart` property specifies the name of the chart, `fetchOpts.repo` specifies the URL where the Helm chart repository is located, and the `values` object allows overriding default chart values. Replace these placeholders with the actual values specific to the `openshift-oauth-proxy` chart and your use case.

4. Optionally, you can export certain information about the deployment using `export`. In this case, `chartStatus` will hold the current status of the Helm chart after deployment.

Please replace placeholders like `https://example.com/helm-charts` with the actual URL of the Helm chart repository that hosts the `openshift-oauth-proxy` chart and provide the necessary values under the `values` object.

To run this Pulumi program, you'll need to have Pulumi CLI installed and set up on your machine, as well as `node.js` and `npm` to manage the TypeScript application. Once you've initialized a new Pulumi project and added the necessary dependencies, you can place the code within the project's main file, typically `index.ts`. Then, you can run `pulumi up` to launch the deployment.

Remember to ensure that your kubeconfig is configured correctly and that you've logged into your OpenShift cluster before running the Pulumi program. If the Helm chart requires specific OpenShift permissions or roles, ensure that the account used in kubeconfig has the necessary permissions to deploy the Helm chart.