Deploy the telepresence-crds helm chart on Opensshift

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Pulumi · Accepted Answer

Deploying a Helm chart on an OpenShift cluster involves a few steps using Pulumi, which I'll walk you through. First, you need to have access to an OpenShift cluster and have the Helm CLI installed, as we'll be deploying the telepresence-crds Helm chart to the cluster.

The telepresence-crds chart is used to install the Custom Resource Definitions (CRDs) required by Telepresence, which is a tool for local development of Kubernetes services.

To accomplish our goal, we'll use the kubernetes.helm.v3.Chart resource from Pulumi's Kubernetes provider. This resource allows you to deploy Helm charts into a Kubernetes cluster. The chart can be from any Helm chart repository or even from a local path.

Below is a TypeScript program that creates an instance of Chart to deploy the telepresence-crds chart to an OpenShift cluster.

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

// Create an OpenShift cluster instance using Pulumi. In this example, we assume that you have an existing OpenShift cluster and context configured.
// If you haven't done that, you need to configure your kubeconfig file to point to the OpenShift cluster.

// Deploy the `telepresence-crds` Helm chart to the OpenShift cluster
const telepresenceCrdsChart = new kubernetes.helm.v3.Chart("telepresence-crds", {
    // Replace `<REPO>` with the Helm chart repository URL that contains `telepresence-crds`
    repo: "<REPO>",
    chart: "telepresence-crds",
    // Specify the version of the Helm chart you want to deploy
    version: "x.x.x",
    // If the Helm chart requires any custom values, you can specify them in the `values` property. For `telepresence-crds`, there usually isn't a need for custom values.
    values: {},
    // Define the namespace where the Helm chart will be installed. If not specified, it will be deployed in the `default` namespace.
    namespace: "default",
}, {
    // Pulumi allows you to provide additional options including transformations and providers.
    // In most cases, the default options are sufficient for deploying Helm charts.
});

// When the program is run, Pulumi takes this definition and deploys the Helm chart into the specified OpenShift cluster.

// To run the Pulumi program:
// 1. `cd` into the project directory
// 2. Run `pulumi up` to preview and deploy the changes.

To summarize, we've declared a Pulumi resource that represents the telepresence-crds Helm chart and indicated that we want to deploy it to our OpenShift cluster. You'll need to replace <REPO> with the actual Helm chart repository URL and "x.x.x" with the actual version number of the telepresence-crds chart.

Keep in mind that the actual repository and version details can be found in the Telepresence documentation or the artifact repository where the helm chart is hosted.

Please ensure that your OpenShift cluster is properly configured in your kubeconfig file and that you have the necessary permissions to deploy to it.

To execute this program:

Create a new directory and initialize a new Pulumi project inside that directory using the pulumi new command.
Choose the kubernetes-typescript template when prompted.
Replace the contents of index.ts with the code above.
Run pulumi up to preview and deploy the changes to your cluster.

Pulumi will perform a deployment preview before making any changes to your cluster, displaying the resources that will be created, updated, or deleted. After reviewing the preview, you can proceed with the actual deployment by confirming the prompt.