Deploy the strimzi-topic-operator helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

Deploying the Strimzi Topic Operator using Helm on the Digital Ocean Kubernetes Service involves several steps. First, you need to create a Kubernetes cluster on Digital Ocean. After the cluster is available, you can deploy the Strimzi Topic Operator Helm chart to the newly created Kubernetes cluster.

To accomplish this, we will follow these steps in the Pulumi program:

1. Create an instance of the DigitalOcean Kubernetes cluster.
2. Use the Helm package for Kubernetes to deploy the Strimzi Topic Operator Helm chart.

### Prerequisites

Ensure you've installed Pulumi, have an account with DigitalOcean, and have configured your Pulumi with the appropriate credentials.

### Pulumi TypeScript Program

Below is the complete Pulumi program written in TypeScript to deploy the Strimzi Topic Operator on DigitalOcean:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as digitalocean from "@pulumi/digitalocean";
import * as k8s from "@pulumi/kubernetes";

// Step 1: Create a DigitalOcean Kubernetes cluster

// Define the settings for our DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc1", // Replace with your preferred region
    version: "latest",
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb", // This is the smallest size available, adjust as needed
        nodeCount: 2,       // Adjust the node count as needed
    },
});

// Export the cluster details
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const clusterName = cluster.name;

// Step 2: Deploy Strimzi Topic Operator Helm chart to the DigitalOcean Kubernetes cluster

const strimziTopicOperatorChart = new k8s.helm.v3.Chart("strimzi-topic-operator", {
    chart: "strimzi-kafka-operator",
    version: "0.20.0", // Use the version you need
    fetchOpts: {
        repo: "https://strimzi.io/charts/",
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: kubeconfig }) });

// Export the name of the Helm release
export const helmReleaseName = strimziTopicOperatorChart.name;
```

### Explanation

1. We begin by importing the necessary Pulumi libraries for working with DigitalOcean (`@pulumi/digitalocean`) and Kubernetes (`@pulumi/kubernetes`).

2. We define a new DigitalOcean Kubernetes cluster with the desired specs—choose your region and node sizes as needed.

3. We export the cluster's kubeconfig, which is needed to interact with the Kubernetes API for deploying applications or querying the state of resources.

4. We create a new instance of the Strimzi Topic Operator using the `pulumi-kubernetes` package. This includes specifiying the Helm chart's name (`strimzi-kafka-operator`) and its version. Note that the version can be changed based on which version of the Operator you want to deploy.

5. Finally, we export the Helm release name for your reference.

After running this Pulumi program, you will have a DigitalOcean Kubernetes cluster running, and the Strimzi Topic Operator deployed to that cluster. You can then interact with Kafka topics using the operator.

To run the above Pulumi program, save it in a file named `index.ts` and execute it using the Pulumi CLI commands `pulumi up`, which will provision the resources as defined.

Please note that the names, regions, and settings are examples and can be changed to suit your specific requirements.

Also, deploying infrastructure will incur costs on DigitalOcean. Make sure to clean up resources with `pulumi destroy` if they are no longer needed.