Deploy the zookeeper-helm-chart helm chart on Linode Kubernetes Engine

To deploy the ZooKeeper Helm chart on Linode Kubernetes Engine (LKE), you'll need to have a few prerequisites in place:

1. Linode Kubernetes Engine Cluster: Ensure you have an LKE cluster up and running. You can create one through the Linode Cloud Manager or using Pulumi's Linode provider.

2. Helm: Helm must be configured to manage packages on your Kubernetes cluster.

3. Pulumi: Make sure you have Pulumi installed and configured with the necessary credentials to interact with Linode and your Kubernetes cluster.

Now let's walk through the process:

1. Configure Kubernetes Provider: Start by configuring the Pulumi Kubernetes provider to interact with your LKE cluster. Pulumi will need the kubeconfig file that you can download from the Linode Cloud Manager.

2. Install ZooKeeper Helm chart: With the Kubernetes provider set up, you'll use Pulumi's kubernetes.helm.v3.Chart resource to deploy the ZooKeeper Helm chart into your cluster.

Below is the Pulumi program written in TypeScript that you can use to deploy the ZooKeeper Helm chart to your LKE cluster:

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

// Create a Kubernetes provider instance that uses your Linode kubeconfig file.
const kubeconfig = "path-to-your-kubeconfig-file"; // Replace with the actual path to your kubeconfig file
const provider = new k8s.Provider("lke-provider", { kubeconfig });

// Deploy the ZooKeeper Helm chart using the Pulumi Kubernetes provider.
const zookeeperChart = new k8s.helm.v3.Chart("zookeeper-chart", {
    chart: "zookeeper",
    version: "appropriate-chart-version", // Specify the chart version you want to deploy
    fetchOpts: {
        repo: "http://charts.helm.sh/stable", // This is an example. Make sure to use the correct Helm chart repository.
    },
    // Optionally, specify additional configuration parameters for ZooKeeper.
    values: {
        // ...additional configuration values...
    },
}, { provider });

// Export the ZooKeeper service endpoint.
export const zookeeperEndpoint = zookeeperChart.getResourceProperty("v1/Service", "zookeeper-chart-zookeeper", "status").apply(status => status.loadBalancer.ingress[0].ip);

Make sure to replace path-to-your-kubeconfig-file with the actual path to your kubeconfig file, and appropriate-chart-version with the version of the ZooKeeper chart you want to deploy. You can find the Helm chart details and different versions on the Helm hub or the official chart repository.

The values object within the zookeeperChart declaration allows you to pass custom values to the chart. You can specify resource limits, storage configurations, and other settings. Consult the ZooKeeper Helm chart documentation for all configuration options.

After deploying the chart, the endpoint of ZooKeeper is exported as a stack output, which you can use to interact with your ZooKeeper service.

To execute this program, save the code to a file with a .ts extension, navigate to the directory containing your file in the terminal, and then run the following Pulumi commands:

pulumi stack init zookeeper-deployment
pulumi up

pulumi stack init initializes a new stack for your project (a stack is an isolated, independently configurable instance of a Pulumi program), and pulumi up creates or updates resources according to the program.

After running these commands, Pulumi will print out the status of the deployment, and if successful, you'll see the zookeeperEndpoint displayed as an output, which you can use to connect to your ZooKeeper instance.