Deploy the prometheus-beanstalkd-exporter helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy a Helm chart on an OpenShift cluster using Pulumi, we need to use the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes Provider. This resource allows us to deploy Helm charts to a Kubernetes cluster, which OpenShift is based upon. The Prometheus Beanstalkd Exporter chart is a Helm chart that can be added to your OpenShift cluster to monitor the Beanstalkd work queue.

To begin, make sure you have the following prerequisites in place:
- An OpenShift cluster up and running.
- Pulumi CLI installed.
- `kubectl` configured to connect to your OpenShift cluster.
- Helm CLI installed, if you need to customize the chart before deploying.

In the following program, we'll instantiate a `Chart` resource which will deploy the Prometheus Beanstalkd Exporter Helm chart to the OpenShift cluster. Make sure that you replace the `repo` property with the appropriate Helm chart repository URL and ensure that the chart `version` you specify is available in your Helm chart repository.

Let's write a TypeScript program for Pulumi to accomplish this:

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

// Create a Helm Chart resource for the Prometheus Beanstalkd Exporter.
const prometheusBeanstalkdExporter = new kubernetes.helm.v3.Chart('prometheus-beanstalkd-exporter', {
    // Replace with the correct repository URL and chart version.
    repo: 'YOUR_HELM_CHART_REPO_URL',
    chart: 'prometheus-beanstalkd-exporter',
    version: 'CHART_VERSION',
    // Define the namespace where you'd like to deploy your chart.
    namespace: 'default',
    // Values to pass to the Helm chart.
    values: {
        // Replace with the values specific to your deployment.
    },
    // Fetch options for Helm, such as authentication credentials necessary for your repo.
    fetchOpts: {
        // Replace with appropriate fetch options if necessary.
    }
}, { provider: YOUR_OPENSHIFT_PROVIDER }); // Ensure you provide the correct OpenShift provider.

export const chart_name = prometheusBeanstalkdExporter.metadata.name;
```

Here's what we're doing in the code:
- We import the `@pulumi/kubernetes` package which contains helpers for deploying Kubernetes resources including Helm charts.
- We define a new `Chart` resource named `prometheus-beanstalkd-exporter`.
- The `repo` parameter should be the URL of your Helm chart repository where the `prometheus-beanstalkd-exporter` chart is hosted.
- The `chart` parameter is the name of the chart in the repository.
- The `version` parameter should match the version of the chart you wish to deploy.
- The `namespace` parameter denotes the namespace in OpenShift where you want to deploy this chart. If you don't specify one, it defaults to 'default'.
- The `values` parameter is an object that represents the custom values you want to pass to the chart. This is where you can customize the configuration of the Prometheus Beanstalkd Exporter specific to your needs.
- The `fetchOpts` parameter is used to pass any specific Helm fetch options such as authentication details. It's necessary if your Helm chart repository requires authentication.
- The `provider` is your OpenShift provider that Pulumi should use to deploy the chart. You would need to create and configure this provider to point to your specific OpenShift cluster.
- Finally, we export the name of the chart to view it easily after deployment.

This program assumes that your Pulumi Kubernetes provider (`YOUR_OPENSHIFT_PROVIDER`) is already configured to work with your OpenShift cluster. If this is not the case, you will need to set up this provider.

After defining your deployment with the above program, you can run the Pulumi CLI to deploy this Helm Chart to your OpenShift cluster:
- `pulumi up` will preview and deploy your changes.
- `pulumi stack export` will show you outputs and other useful information about your deployment once it's completed.