Deploy the koordinator-yarn-copilot helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the `koordinator-yarn-copilot` Helm chart on an AWS Elastic Kubernetes Service (EKS) cluster using Pulumi and TypeScript, we need to follow these steps:

1. **Set up an EKS Cluster:** We will create an EKS cluster using the `@pulumi/eks` package, which offers high-level abstractions for creating and managing EKS clusters.

2. **Deploy the Helm Chart on EKS:** Once we have the EKS cluster in place, we will use the `@pulumi/kubernetes` package to deploy the Helm chart. This Pulumi package provides the necessary abstractions to work with Kubernetes resources, including Helm charts.

Below is a TypeScript program that accomplishes this deployment. It's structured with detailed comments to help you understand what each part of the code does:

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

// Create an EKS cluster.
const cluster = new eks.Cluster("my-cluster", {
    desiredCapacity: 2, // Specify the desired number of worker nodes.
    minSize: 1, // Specify the minimum number of worker nodes the cluster can scale down to.
    maxSize: 3, // Specify the maximum number of worker nodes the cluster can scale up to.
});

// Once the cluster is created, we set up a K8s provider instance to deploy resources to that cluster.
const provider = new k8s.Provider("my-k8s-provider", {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Deploy the `koordinator-yarn-copilot` Helm chart using the k8s provider and the helm.v3.Chart class.
const helmReleaseName = "koordinator-yarn-copilot";
const helmChart = new k8s.helm.v3.Chart(helmReleaseName, {
    chart: "koordinator-yarn-copilot", // The name of the Helm chart you want to deploy.
    version: "1.0.0", // Specify the version of the chart. If not provided, it installs the latest version.
    namespace: "default", // Specify the namespace where you want to deploy the chart.
    fetchOpts: {
        repo: "http://charts.example.com/", // Replace with the actual Helm chart repository URL.
    },
}, { provider });

// Export the cluster's kubeconfig and the Helm chart release status.
export const kubeconfig = cluster.kubeconfig;
export const helmChartStatus = helmChart.status;

```

This program will perform the following actions:
- Provision an EKS cluster with the specific number of nodes.
- Set up a Kubernetes provider pointing to the newly created EKS cluster.
- Deploy the specified Helm chart to the EKS cluster with the given release name, chart name, chart version, and namespace.

As you evolve in your Pulumi journey, you can add more sophisticated configurations, implement best practices such as splitting the infrastructure into stacks, manage secrets, and more. Start with this basic layout and iterate over the infrastructure code as your application requirements grow.

Please replace `http://charts.example.com/` with the actual Helm chart repository URL where the `koordinator-yarn-copilot` chart is located. Also, choose an appropriate version of the chart as per your requirements. If you are unsure about these values, you will need to check the documentation or repository for the `koordinator-yarn-copilot` chart.

Keep in mind that you'll need to have `kubectl`, AWS CLI, and Pulumi CLI installed and configured on your machine to create and manage AWS resources and Kubernetes resources. After writing this code in a file (`index.ts` for example), you can run it using Pulumi CLI commands (`pulumi up`). Ensure you are logged in to your AWS account where you have permissions to create and manage EKS clusters and related resources.