Deploy the snappass helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the SnapPass Helm chart on OpenShift using Pulumi, we'll use resources from the Kubernetes provider - specifically, the `kubernetes.helm.v3.Chart` class, which allows you to deploy applications using Helm charts. Helm charts are collections of pre-configured Kubernetes resources that you can deploy as a single unit.

Here's an outline of the steps we're going to take:

1. Set up the Kubernetes provider to connect to your OpenShift cluster.
2. Use the `Chart` resource to deploy the SnapPass Helm chart.

The following program is written in TypeScript and assumes you have already configured `kubectl` to communicate with your OpenShift cluster. The Helm chart for SnapPass is not officially available in the Helm chart repositories, so for the purpose of this example, we will assume you have the chart available locally or in a custom Helm chart repository.

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

// Create a Kubernetes provider instance configured to your OpenShift cluster.
// This uses the default kubeconfig e.g., ~/.kube/config
const provider = new k8s.Provider("openshift-provider", {});

// Define the SnapPass Helm chart deployment.
// Make sure to replace 'path/to/snappass-chart' with the actual path to your SnapPass Helm chart
// or if it's in a custom repository, provide the 'repo' property.
const snappassChart = new k8s.helm.v3.Chart("snappass", {
    path: "path/to/snappass-chart", // or `repo` if you're using a Helm repository
    values: { /* ... your custom values ... */ },
    namespace: "snappass-namespace", // specify the namespace where you want to deploy SnapPass
}, { provider: provider });

// Export the base URL for the SnapPass service
export const snappassUrl = snappassChart.getResourceProperty("v1/Service", "snappass-service", "status").apply(status => status.loadBalancer.ingress[0].ip);
```

Here's a breakdown of what the code does:

- `import * as k8s from "@pulumi/kubernetes";`: We import the Pulumi Kubernetes SDK to interact with Kubernetes resources.

- `const provider = new k8s.Provider("openshift-provider", {});`: We instantiate a Pulumi provider for Kubernetes that will use the default kubeconfig for authentication against your OpenShift cluster.

- `const snappassChart = new k8s.helm.v3.Chart("snappass", {/*...*/}, { provider: provider });`: We deploy the SnapPass application using a Helm Chart. Replace `"path/to/snappass-chart"` with the location of your SnapPass Helm chart. If your chart requires specific configuration, you can provide that in the `values` object. Make sure to specify the `namespace` where the Helm chart should be deployed. If you want to deploy the chart from a custom repository, you need to specify the `repo` property instead of the `path`.

- `export const snappassUrl`: We try to export a base URL of the SnapPass service. We assume that the service is of the type `LoadBalancer` and that the public IP is allocated (this exact syntax may vary depending on how OpenShift and SnapPass are configured).

To use this code, place it into a TypeScript file (e.g., `index.ts`), install the necessary dependencies with `npm` or `yarn`, and run `pulumi up` to provision the resources. If you don't have a particular SnapPass Helm chart, you'll need to find or create one that suits your needs.

Remember, it's crucial to check the documentation of the Helm chart used (in this case, SnapPass) for any prerequisites and specific chart configurations. The values and resources I've referenced may need to be adjusted to conform to the actual Helm chart you're deploying.