Deploy the tekton-pipelines helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the Tekton Pipelines Helm chart on Oracle Kubernetes Engine (OKE), we'll use Pulumi's Kubernetes provider to interact with your OKE cluster, and the Helm Chart resource to manage the installation of Tekton Pipelines.

Below is a step-by-step Pulumi program that shows you how to accomplish this:

1. **Set up Pulumi with the Kubernetes provider**: To communicate with your K8s cluster, Pulumi uses the Kubernetes provider. It needs to be configured with the appropriate credentials to interact with your OKE cluster.

2. **Creating a Helm Chart resource**: The `kubernetes.helm.v3.Chart` resource is used to deploy a Helm chart from a repository. In this case, we'll deploy Tekton Pipelines.

Here's a detailed Pulumi program in TypeScript:

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

// You must configure your Oracle Kubernetes Engine (OKE) cluster's kubeconfig in a way that Pulumi can access it.
// Typically, this is done by setting the KUBECONFIG environment variable or ensuring your kubeconfig is in
// the default location, `~/.kube/config`. Please see Pulumi's documentation on Kubernetes provider for more details:
// https://www.pulumi.com/docs/intro/cloud-providers/kubernetes/#authentication

// Initialize a Kubernetes provider configured for your OKE cluster
// The provider uses your kubeconfig file for accessing the Kubernetes API.
const provider = new k8s.Provider('oke-k8s', {
  // Assuming the kubeconfig is in default location or KUBECONFIG is set.
});

// Deploy the Tekton Pipelines Helm chart into your OKE cluster using the Helm Chart resource.
const tektonPipelines = new k8s.helm.v3.Chart('tekton-pipelines', {
  chart: 'tekton',
  version: '0.27.3', // Use the appropriate version of the Tekton Helm chart
  fetchOpts: {
    // Replace this with the Helm repository that contains Tekton Pipelines chart
    repo: 'https://tekton.dev/charts',
  },
  namespace: 'default', // Specify the namespace where Tekton Pipelines should be installed
}, { provider }); // Associate with the OKE Kubernetes provider

// Export the status of the deployed Tekton Pipelines
export const tektonPipelinesStatus = tektonPipelines.status;

```

### Explaining the Pulumi Program:

- We start by importing the necessary libraries from Pulumi, specifically the core package and the Kubernetes package.

- Before using Pulumi with OKE, you need to have your kubeconfig correctly set up so Pulumi can authenticate with your Kubernetes cluster.

- We create a Kubernetes provider instance which Pulumi will use to interact with your OKE. This provider relies on the kubeconfig file to establish this connection.

- A new Helm Chart resource is declared for Tekton Pipelines. We specify the chart's name, the version of the Helm chart we want to deploy, and the repository URL where the Helm chart is located.

- We set the namespace for the deployment, which is 'default' in this example, but could be any namespace that you have configured in your cluster.

- Finally, we export the status of the Tekton Pipeline Chart, which allows us to see the details of the Helm release after deployment.

To run the above program, save it to a `.ts` file, then execute it using the Pulumi CLI with `pulumi up`. Ensure you have Pulumi and the necessary cloud credentials configured before running the command.