Deploy the zookeeper-exporter helm chart on Oracle Kubernetes Engine (OKE)

To deploy the zookeeper-exporter Helm chart on Oracle Kubernetes Engine (OKE), you will need to perform several steps.

1. Set up the OCI (Oracle Cloud Infrastructure) provider configuration in Pulumi.
2. Create or configure your Kubernetes cluster on Oracle Kubernetes Engine.
3. Use Pulumi's Kubernetes provider to interact with your OKE cluster.
4. Deploy the Helm chart using Pulumi's Helm support.

In this program, we will assume that an OKE cluster is already provisioned and that you have the necessary kubeconfig to access the cluster. We will focus on deploying the zookeeper-exporter Helm chart.

Below is a TypeScript program that uses the Pulumi Kubernetes provider to deploy the zookeeper-exporter Helm chart to an existing OKE cluster:

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

// You need to have the kubeconfig for your OKE cluster.
// Typically, this is obtained via the Oracle Cloud Infrastructure CLI or the console, and
// should be set in your environment or Pulumi configuration.

const kubeconfig = pulumi.output("<YOUR_KUBECONFIG_CONTENTS>");

// Create a provider resource to interact with your OKE cluster.
const provider = new k8s.Provider("oke-k8s-provider", {
    kubeconfig: kubeconfig,
});

// Deploy the `zookeeper-exporter` Helm chart to the OKE cluster.
// You need to specify the repository and chart name along with any custom values you require.
const zookeeperExporterChart = new k8s.helm.v3.Chart("zookeeper-exporter", {
    chart: "zookeeper-exporter",
    version: "<CHART_VERSION>", // specify the version of the chart you want to deploy
    fetchOpts: {
        repo: "<HELM_CHART_REPOSITORY_URL>", // specify the Helm repository URL
    },
    // Add any custom values required for the Helm chart here.
    values: {
        // For example, if the chart requires Zookeeper host info, you could specify:
        // zookeeperHost: "zookeeper.mynamespace.svc.cluster.local",
        // zookeeperPort: 2181,
    },
}, { provider: provider });

// Export the Helm chart deployment name.
export const helmDeploymentName = zookeeperExporterChart.metadata.apply(m => m.name);

// Use the deployed resource values or Helm chart values if needed.
// For instance, you might want to export the service endpoint of zookeeper-exporter once deployed.

In this program:

• We import the necessary Pulumi libraries for Kubernetes.
• We assume that you have access to your OKE cluster kubeconfig. It should be the contents of your kubeconfig file, which provides the details required to connect to your OKE cluster. Replace <YOUR_KUBECONFIG_CONTENTS> with the actual kubeconfig file contents.
• We create a Pulumi Kubernetes provider to interact with the OKE cluster using the kubeconfig.
• We deploy the zookeeper-exporter Helm chart using the k8s.helm.v3.Chart resource. This allows you to deploy pre-packaged applications with Helm on a Kubernetes cluster.
• Inside values, you can specify any custom values that your zookeeper-exporter chart requires. It's common for charts to require specific parameters for the deployment, such as service endpoints or resource specifications.
• Finally, we export the deployment name of the Helm chart. This is typically used for reference purposes or to link this deployment to other Kubernetes resources.

Please replace <CHART_VERSION> with the version of the zookeeper-exporter chart you want to deploy and <HELM_CHART_REPOSITORY_URL> with the URL to the Helm chart's repository. Make sure to also fill out any necessary values in the values section depending on your Helm chart's requirements.

Remember that managing resources in the cloud requires proper permissions, so ensure your OCI credentials have the necessary rights to deploy and manage resources in OKE.

To execute this Pulumi program, save the code in a file named index.ts, then run the following commands:

pulumi up

This command will initiate the deployment process. Pulumi will show you a preview of the actions it will perform and, upon your confirmation, apply those actions to deploy the Helm chart.