Deploy the kafdrop helm chart on Linode Kubernetes Engine

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Pulumi · Accepted Answer

To deploy the Kafdrop Helm chart on Linode Kubernetes Engine (LKE), you would follow these steps:

Set up your LKE Cluster: Before you deploy anything with Pulumi, you need an LKE cluster. Use the Linode Cloud Controller Manager to create and manage this cluster. Your cluster must have a kubeconfig file configured so that your Pulumi scripts can interact with it.
Install Pulumi CLI: Ensure you have the Pulumi CLI installed on your local machine. You'll use the Pulumi CLI to set up your Pulumi project, add necessary dependencies, and deploy your Helm chart.
Create a new Pulumi TypeScript project: Initialize a new Pulumi project using TypeScript as your language choice. You can do this by running pulumi new typescript in your terminal and following the on-screen prompts.
Install Kubernetes package: Your Pulumi project will require the @pulumi/kubernetes package, which allows you to work with Kubernetes resources, including deploying Helm charts. You can install it with the npm install @pulumi/kubernetes command.
Create a new TypeScript file: Inside your Pulumi project, create a new TypeScript file where you'll write the code to deploy the Kafdrop Helm chart to your LKE.
Write the Pulumi code: Use the @pulumi/kubernetes package to apply the Helm chart to your cluster. You'll specify the chart name (kafdrop), and potentially, you can provide any custom values required by the chart.

The following is a detailed walkthrough in code form of what this would look like:

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

// Initialize a Kubernetes provider using the kubeconfig file generated
// by Linode Kubernetes Engine for managing resources in the cluster.
const provider = new k8s.Provider("lkeCluster", {
    kubeconfig: "<your-kubeconfig-here>", // This is your LKE cluster kubeconfig
});

// Deploy the Kafdrop Helm chart to the LKE Cluster.
// Helm charts are a way to package up a set of predefined Kubernetes resources.
// Kafdrop is a web UI for viewing Kafka topics and browsing consumer groups.
const kafdropChart = new k8s.helm.v3.Chart("kafdrop", {
    // You might want to change this for the actual repository that hosts Kafdrop.
    repo: "obsidiandynamics",
    chart: "kafdrop",
    version: "0.1.0", // Specify the target version of the Helm chart.
    // Provide values to configure the Helm chart.
    values: {
        // These values would be specific to your Kafdrop configuration,
        // For example, you might want to configure the Kafka connection details,
        // resource requests/limits, or expose the service via a LoadBalancer instead of a ClusterIP.
        // Values should be consistent with what Kafdrop chart expects.
        // Refer to the Kafdrop Helm chart documentation for available options:
        // https://github.com/obsidiandynamics/kafdrop
    },
}, {provider: provider}); // Specify the provider we configured above.

// Export the service endpoint of Kafdrop so you can easily access it.
export const kafdropEndpoint = kafdropChart.getResourceProperty("v1/Service", "kafdrop", "status");

Remember to replace <your-kubeconfig-here> with the actual kubeconfig from your Linode Kubernetes Engine cluster. You can also customize the values section with any configuration specific to the Kafdrop Helm chart that you want to override.

Before running this program with Pulumi, ensure you have access to the cluster and the kubeconfig is set correctly. To deploy the application to your LKE cluster, execute the pulumi up command in the terminal, review the deployment plan, and confirm the changes if they look correct.

The kafdropEndpoint export at the end of the code snippet will output the Kubernetes service endpoint that you can visit in your web browser to access the Kafdrop UI.

Please note that the chart repository name obsidiandynamics is a placeholder; you might need to replace it with the correct repository that hosts the Kafdrop chart if it is different. Make sure you check the Helm chart repository for the correct details on the chart name, version, and available configuration options. Here is a link to the @pulumi/kubernetes Helm charts documentation for more information on deploying Helm charts with Pulumi.