Deploy the ssl-exporter helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `ssl-exporter` Helm chart on an OpenShift cluster using Pulumi, you will utilize the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider. This resource allows you to deploy Helm charts within a Kubernetes cluster, and is suitable for OpenShift as well since OpenShift is an extension of Kubernetes.

The deployment process includes the following steps:
1. Importing the necessary Pulumi and Kubernetes packages.
2. Creating an instance of a `Chart` resource, which represents the `ssl-exporter` Helm chart.
3. Providing configuration details specific to the `ssl-exporter` Helm chart, such as chart name, values, namespace, and repository details if it's not a chart from the stable Helm repository.
4. Optionally, you can provide transformations to modify the resources before they are created, which can be useful for OpenShift-specific configurations or restrictions.

Below is a Pulumi program in TypeScript that demonstrates these steps:

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

// Create a new instance of the ssl-exporter Helm Chart.
// This could be from a local chart directory or from a Helm repository.
const sslExporterChart = new k8s.helm.v3.Chart("ssl-exporter", {
    // Replace with the actual repository URL if the chart is not in the stable repository.
    repo: "https://your-chart-repository",
    chart: "ssl-exporter",
    // Specify the namespace where the chart should be deployed.
    namespace: "default",
    // You can override default values from the chart by specifying them here.
    // This would be the equivalent of using the --set flag in `helm install`.
    values: {
        // Set your custom values for the ssl-exporter chart here.
    },
    // If you need to pass any special options to the Helm fetch command you can specify them here.
    fetchOpts: {
        // Set custom fetch options here if necessary.
    },
});

// Export the base URL for the ssl-exporter service, assuming it creates a Kubernetes service.
export const sslExporterUrl = sslExporterChart.getResourceProperty("v1/Service", "ssl-exporter", "status").apply(status => {
    return `http://${status.loadBalancer.ingress[0].hostname}`;
});
```

In this Pulumi program:
- We import the `@pulumi/pulumi` package for general Pulumi functions and the `@pulumi/kubernetes` package for working with Kubernetes resources.
- We create a new Helm chart instance for `ssl-exporter` using `k8s.helm.v3.Chart`.
  - `repo` is the URL of the Helm repository where the `ssl-exporter` chart is located, which you need to replace with the appropriate URL.
  - `chart` specifies the name of the chart we want to deploy.
  - `namespace` indicates the OpenShift project (Kubernetes namespace) where you want to deploy the chart.
  - `values` can be used to override default values in the Helm chart, corresponding to customizing the `values.yaml` file.
  - The `fetchOpts` parameter allows you to specify custom Helm fetch options if they are necessary for your use case.
- We export `sslExporterUrl` variable which, assuming that the Helm chart creates a Kubernetes Service, retrieves the load balancer ingress address. You can access the underlying status of any resource provisioned by the Helm chart using the `getResourceProperty` method.

To use this program, you need to have Pulumi installed and configured with access to your OpenShift cluster. You would run `pulumi up` to deploy the chart to your cluster.

If you have additional configurations, such as setting up a persistent volume or any other custom resource configurations specific to your OpenShift environment, you may need to add additional code before deploying the chart.