Deploy the ibm-cp4d-watson-studio-instance helm chart on Rancher

Question

Pulumi · Accepted Answer

Deploying an IBM Cloud Pak for Data Watson Studio instance using a Helm chart on a Rancher-managed Kubernetes cluster involves several steps. Below is a Pulumi program that demonstrates how you can accomplish this. The program assumes the following:

You have a Kubernetes cluster managed by Rancher.
You have access to the Helm chart for IBM CP4D Watson Studio.
You have the necessary permissions to deploy resources to the Kubernetes cluster.

Firstly, you'll need to set up Rancher in Pulumi and specify the cluster where you intend to deploy the Helm chart. Then you will utilize Pulumi's Kubernetes provider to install the Helm chart.

Here's how you can write a Pulumi program to deploy the ibm-cp4d-watson-studio-instance Helm chart on Rancher:

import * as rancher2 from "@pulumi/rancher2";
import * as k8s from "@pulumi/kubernetes";

// Initialize the Pulumi Rancher 2 provider to interact with your Rancher instance.
// The Rancher 2 provider allows you to manage Rancher resources such as clusters, catalogs, and workloads.
const rancherProvider = new rancher2.Provider("rancher-provider", {
    apiURL: "<RANCHER_API_URL>", // Replace with your Rancher API URL
    accessToken: "<RANCHER_ACCESS_TOKEN>", // Replace with your Rancher access token
    secretKey: "<RANCHER_SECRET_KEY>", // Replace with your Rancher secret key
});

// Get a reference to your Rancher Kubernetes cluster where the Helm chart will be deployed.
const cluster = rancher2.getCluster({
    name: "<CLUSTER_NAME>", // Replace with the name of your Rancher-managed cluster
});

// Initialize the Pulumi Kubernetes provider to interact with the Rancher-managed cluster.
// This provider is used for deploying and managing K8s resources like the Helm chart.
const k8sProvider = new k8s.Provider("k8s-provider", {
    kubeconfig: cluster.kubeConfig,
}, { dependsOn: [rancherProvider] }); // Ensure that the Rancher provider is set up before interacting with the cluster.

// Deploy the IBM CP4D Watson Studio Helm chart to your Rancher-managed cluster.
// Helm charts are packages that contain pre-defined Kubernetes resources, allowing you to deploy complex applications easily.
const ibmCp4dWatsonStudio = new k8s.helm.v3.Chart("ibm-cp4d-watson-studio", {
    chart: "ibm-cp4d-watson-studio-instance",
    version: "<CHART_VERSION>", // Replace with the version of the Helm chart you want to deploy
    fetchOpts: {
        // Specify the repository containing the Helm chart.
        // Adjust the repo URL to the location of the IBM CP4D Watson Studio Helm chart.
        repo: "https://<HELM_REPO_URL>", // Replace with the correct URL
    },
    values: {
        // Set Helm values required for customizing the deployment.
        // Refer to the Helm chart documentation for the list of configurable values.
        // Example: setting the service type to LoadBalancer to expose the Watson Studio service.
        service: {
            type: "LoadBalancer",
        },
        // Include any additional values required as per the Helm chart's documentation.
    },
}, { provider: k8sProvider }); // Ensure that the Kubernetes provider is managing resources in the correct cluster.

// Export any output properties you might need. For example, the LoadBalancer IP if the service is exposed.
export const watsonStudioServiceIp = ibmCp4dWatsonStudio.getResourceProperty("v1/Service", "ibm-cp4d-watson-studio-service", "status")
    .apply(status => status.loadBalancer.ingress[0].ip);

This program begins by creating a rancher2.Provider that connects to your Rancher instance using provided API URL, access token, and secret key. It then retrieves information about the specified cluster.

Next, the program initializes a Pulumi Kubernetes provider. This is created using the kubeconfig of the Rancher cluster, ensuring that any Kubernetes resources are deployed to that cluster and not elsewhere.

The primary action is deploying the IBM CP4D Watson Studio Helm chart using Pulumi's Helm v3 Chart resource. This Helm chart is fetched from the specified repository URL, and you can customize it by passing values with any necessary configurations. Some values could include service type, resource constraints, number of replicas, etc. Ensure that you consult the Helm chart's documentation for all required and optional configuration values.

Finally, the program exports the IP address of the LoadBalancer, assuming the Helms chart creates a service of that type to expose the Watson Studio instance externally.

Replace placeholders with actual values from your Rancher setup, and consult the Helm chart's documentation for the exact configuration fields you'll need to fill in.

Please note this is a high-level example, and you might need to add additional configurations and account for prerequisites before running this program. Make sure that your Pulumi CLI is set up to run programs with the appropriate credentials and that the Pulumi stack is configured correctly for your cloud provider and Rancher environment.