Deploy the kafka-connect-wrapper helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the Kafka Connect Wrapper Helm chart on Kubernetes using Pulumi, you’ll be leveraging the kubernetes.helm.v3.Chart resource. This resource allows you to specify the Helm chart that you want to install, as well as the namespace, set values, and other configurations as you would with Helm.

Here's a step-by-step overview of what you need to do:

Import Required Packages: Start your Pulumi program by importing the necessary packages. You'll need the @pulumi/kubernetes package to interact with Kubernetes resources, and @pulumi/pulumi for the Pulumi program constructs.
Create a Kubernetes Provider: If your Kubernetes cluster is not configured in your local kubeconfig, you'll need to create a Kubernetes provider instance pointing to your cluster.
Deploy the Helm Chart: You'll use the kubernetes.helm.v3.Chart resource to deploy the Kafka Connect Wrapper chart. You need to provide the chart name, and optionally the repository URL if the chart is not in the default Helm chart repository.
Setting Chart Values: If you need to override any default values in the chart, you can supply an object to the values property. This is equivalent to using --set in the Helm CLI.

Let's put this all together into a Pulumi program written in TypeScript:

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

// Step 1: Configure the Kubernetes provider (if necessary)
// If you are using the default kubeconfig credentials,
// this step can be omitted.
const provider = new k8s.Provider("my-provider", {
    kubeconfig: "<KUBECONFIG_CONTENTS>",
});

// Step 2: Deploy Kafka Connect Wrapper using the Helm Chart
// Replace `<CHART_NAME>` with the actual name of the Kafka Connect Wrapper chart,
// and `<VERSION>` with the chart version you wish to deploy.
// If using a custom repository, specify `repo: "<REPO_URL>"`.
const kafkaConnectChart = new k8s.helm.v3.Chart("kafka-connect-wrapper", {
    chart: "<CHART_NAME>",
    version: "<VERSION>",
    // Uncomment and set the repo property if chart is from a custom repo
    // repo: "<REPO_URL>",
    namespace: "default", // Replace with the namespace you want to deploy into
    values: {
        // Set custom values for the Helm chart here (if necessary).
        // For example:
        // image: {
        //     repository: "my-repo/kafka-connect",
        //     tag: "latest"
        // },
        // replicaCount: 3,
    },
    // Specify the provider if you have configured a custom provider
    // provider: provider,
}, { provider: provider });

// Optional: Export the chart name
export const chartName = kafkaConnectChart.metadata.name;

Explanation:

The kubernetes.helm.v3.Chart resource is a Pulumi component that represents a Helm chart from the Kubernetes package. In the above code, kafkaConnectChart is used to deploy the Kafka Connect Wrapper chart on your Kubernetes cluster.
The provider object is instantiated with kubeconfig settings. This is necessary if your Kubernetes cluster is not set within your local kubeconfig or if you need to target a specific Kubernetes cluster.
The chart details such as its name, version, and namespace for deployment are set within the Chart constructor. If your Kafka Connect Wrapper Helm chart is in a custom Helm repository, you must provide the repository URL.
The values property within the chart allows you to configure it as necessary. This is akin to using helm install --set commands to customize the deployment.
The exported chartName variable allows you to retrieve the name of the deployed Helm chart after your Pulumi program has run. This can be useful for scripting subsequent commands or for integration with CI/CD systems.

Remember to replace <CHART_NAME>, <VERSION>, <REPO_URL>, and the values within the values object with the appropriate details for the Kafka Connect Wrapper Helm chart you wish to deploy.

To run this Pulumi program, save it as index.ts, install the required npm packages by running npm install @pulumi/pulumi @pulumi/kubernetes, and then execute it by running pulumi up. This will initiate the deployment of the Kafka Connect Wrapper Helm chart onto your Kubernetes cluster.