Deploy the neon helm chart on Opensshift

Question

Pulumi · Accepted Answer

Deploying a Helm chart to an OpenShift cluster involves a few steps: setting up the OpenShift cluster credentials, defining the Helm chart details, and applying the chart to the cluster. Here's how you can achieve this with Pulumi using TypeScript.

Prerequisites

An OpenShift cluster where you have permissions to deploy applications.
Pulumi CLI installed and configured.
Your OpenShift cluster credentials configured in a way that Pulumi can use them.

Step-by-Step Explanation

Define the OpenShift Cluster: You need access to an OpenShift cluster. Assuming you already have one, we'll move on to how to interact with it using Pulumi.
Install Pulumi Kubernetes Provider: This provider will allow you to interact with your Kubernetes cluster (OpenShift is Kubernetes with additional features).
Helm Chart: Define a Helm chart resource. You need to specify the chart you want to deploy, in this case, 'neon'. Ensure that this Helm chart exists in a Helm repository, which you have access to. If it's in a private repository, you would need proper credentials configured in your Kubernetes setup.
Deploy: Apply the Helm chart to the OpenShift cluster, taking care to specify the namespace if needed.

Now, let's translate this process into code:

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

// Initialize a Kubernetes provider instance using the context of your cluster.
const provider = new k8s.Provider('openshift-k8s', {
    kubeconfig: '<Your OpenShift Cluster Kubeconfig>',
});

// Define the details of the Helm chart.
const neonChart = new k8s.helm.v3.Chart('neon-helm-chart', {
    chart: 'neon',
    version: '<Chart Version>',
    // Replace <Repository URL> with the URL of the Helm repository.
    fetchOpts: {
        repo: '<Repository URL>',
    },
    // Specify the namespace where the chart should be deployed.
    // If the namespace doesn't exist, it needs to be created beforehand.
    namespace: 'default', // or your specific namespace.
}, { provider });

// Export the URL or any other output of the Helm chart that could be useful.
export const neonChartUrl = neonChart.getResourceProperty('v1/Service', 'neon-helm-chart-neon', 'status');

In this program, we're using Pulumi's Kubernetes provider to interact with our OpenShift cluster. We specify our cluster's kubeconfig to establish a connection. Ensure you have your kubeconfig file's content or a reference to its location.

Then we define our Helm chart. We're calling our Helm chart "neon-helm-chart", referring to the 'neon' chart. You will need to replace the placeholder values like <Your OpenShift Cluster Kubeconfig>, <Chart Version>, and <Repository URL> with the actual values.

Lastly, we're deploying this chart on the default namespace – you can change this to any other namespace you need to deploy to. The provider we pass to the Chart ensures it's applied onto the OpenShift cluster.

At the end, we're exporting the URL of some internal Kubernetes Service created by the Helm chart for the deployed application, so you can quickly access it. Note that you might need to adjust the resource name or export different properties based on the specifics of the 'neon' Helm chart.

To run this Pulumi program, simply use:

pulumi up

This command will execute the TypeScript code, creating the resources on OpenShift as per the Helm chart specification. Be sure to inspect the detailed preview that pulumi up provides before confirming the deployment. Pulumi also provides a stack update history, so you can audit changes over time.

Remember to replace placeholders and ensure that the necessary Helm Chart and repository information is correct and accessible from your cluster before running the program.