Deploy the zookeeper-3Nodes helm chart on Opensshift

To deploy the zookeeper-3Nodes Helm chart on an OpenShift cluster using Pulumi, we'll use the kubernetes.helm.v3.Chart resource which allows us to deploy Helm charts to a Kubernetes cluster, including OpenShift. Helm is a package manager for Kubernetes, and it uses charts to define, install, and upgrade even the most complex Kubernetes applications. The zookeeper-3Nodes is such a chart which you can obtain from a Helm repository or a specific chart source.

Here's how you do it:

1. The first step is to ensure you have access to an OpenShift cluster. For Pulumi to communicate with your OpenShift cluster, you need to have kubectl configured on your machine.

2. You'll then create a Pulumi TypeScript program that defines a kubernetes.helm.v3.Chart resource which references the zookeeper-3Nodes Helm chart. Pulumi will utilize your local kubectl configuration to deploy the Helm chart to the OpenShift cluster.

Below is a TypeScript program that demonstrates this process:

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

// Define the settings for our Helm deployment.
const zookeeperChart = new kubernetes.helm.v3.Chart("zookeeper-3Nodes", {
    // You must specify the repository or chart source where the zookeeper-3Nodes chart is located,
    // along with the chart version you want to deploy.
    // For example:
    // repo: "https://charts.helm.sh/stable",
    chart: "zookeeper-3Nodes",
    // version: "x.y.z", // specify the exact chart version

    // Here you can specify a namespace where this chart will be deployed.
    namespace: "default",

    // If the zookeeper-3Nodes chart requires any custom values, provide them here.
    // values: {
    //     key: "value",
    // },
});

// Export the frontend service's address.
export const zookeeperService = zookeeperChart.getResource("v1/Service", "zookeeper-3Nodes");

Please make sure to replace the placeholder values for the repo and version with actual values which point to where your zookeeper-3Nodes Helm chart is located and the desired version you wish to use.

Explanation:

• We import the @pulumi/kubernetes package allowing us to create Kubernetes resources using Pulumi.
• We create a new Helm chart resource using kubernetes.helm.v3.Chart. The first parameter is the name of the resource in Pulumi, and the second parameter is the configuration for our Helm chart.
• With the chart property, we specify the name of the chart to deploy - "zookeeper-3Nodes".
• The namespace property is optional; if not specified, Pulumi uses the "default" namespace. Replace it with the namespace you wish to deploy to if necessary.
• If our chart required any specific values to customize the deployment, these would go in the values object.
• Lastly, to interact with the deployed services, we export the address of the created service.

You would run this program using the Pulumi CLI. This includes running pulumi up to preview and then perform the deployment. When Pulumi finishes its deployment, the zookeeperService export will provide you with the necessary information to interact with ZooKeeper.

Keep in mind that your OpenShift cluster should have Helm installed and be able to pull Helm charts from the repository where zookeeper-3Nodes is hosted. Additionally, you need to be authenticated against the cluster with sufficient permissions to deploy Helm charts.