1. Deploy the zookeeper-exporter helm chart on Linode Kubernetes Engine


    To deploy a Helm chart on Linode Kubernetes Engine (LKE) using Pulumi, you will need to perform a few steps:

    1. Configure access to Linode with the necessary credentials.
    2. Create a Kubernetes cluster on LKE (if you don't have one already).
    3. Install the Helm chart on the cluster.

    For the purpose of this walkthrough, let's assume that you've already configured your Linode provider and have an LKE cluster ready to go. The @pulumi/kubernetes package will be used to deploy a Helm chart onto the LKE cluster.

    Here's a step-by-step explanation of the Pulumi program you'll be using:

    • Setup Pulumi Kubernetes Provider: This uses the Kubernetes provider to interact with your LKE cluster.
    • Deploy Helm Chart: This creates a Helm chart resource. We specify the zookeeper-exporter chart, which can be sourced from a public or private Helm repository, along with any values required for the chart configuration.
    • Output the Application URL: If the zookeeper-exporter provides an external endpoint, we can export this as a Pulumi stack output.

    Here is the TypeScript program that performs these actions:

    import * as pulumi from '@pulumi/pulumi'; import * as k8s from '@pulumi/kubernetes'; // You need to create a new Kubernetes provider that points to your Linode cluster // Replace the `kubeconfig` with the appropriate configuration retrieved from Linode. const provider = new k8s.Provider("lke-provider", { kubeconfig: "<Your LKE Cluster Kubeconfig>", }); // Deploy the zookeeper-exporter Helm chart onto your LKE cluster const zookeeperExporterChart = new k8s.helm.v3.Chart("zookeeper-exporter", { chart: "zookeeper-exporter", // Here you need to provide the repository for the chart if it's not in the default Helm repo fetchOpts: { repo: "http://helm-repository-url/" }, // If additional configuration is required it can be specified here // For example: // values: { // replicaCount: 2, // service: { // type: "LoadBalancer" // }, // }, // The namespace where you want to deploy the chart namespace: "monitoring", }, { provider }); // If the Helm chart creates a service of type LoadBalancer, // we can export the external IP to access the zookeeper-exporter service. const service = zookeeperExporterChart.getResource("v1/Service", "zookeeper-exporter"); export const zookeeperExporterUrl = service.status.loadBalancer.ingress[0].ip.apply( ip => `http://${ip}:<Service Port>` ); // Run `pulumi up` to deploy the chart, and then you can use the exported URL to access the zookeeper-exporter.

    In this program, you will need to replace <Your LKE Cluster Kubeconfig> with the appropriate kubeconfig for your LKE cluster. If the Helm chart is hosted in a Helm repository other than the default, you would provide its URL in the repo under fetchOpts.

    Remember, once you've written your Pulumi code, you can deploy the chart by running:

    $ pulumi up

    This will execute the code, apply your desired state to your cluster, and output any stack exports - such as the URL of the deployed application - to your terminal.

    Lastly, to tear down the resources created by the Pulumi program, you can run:

    $ pulumi destroy

    This will remove all resources managed by the program. Always review the resources that will be destroyed carefully before confirming the operation to avoid accidental data loss.