Deploy the aliyun-exporter helm chart on AWS EKS

Question

Pulumi · Accepted Answer

Deploying the `aliyun-exporter` Helm chart on an AWS EKS (Elastic Kubernetes Service) cluster involves several steps: setting up an EKS cluster, installing the Helm CLI, and deploying the chart. Pulumi is a modern infrastructure as code platform that can greatly simplify this process by codifying all the required steps in TypeScript.

Below, I present a Pulumi program that creates an EKS cluster on AWS and then deploys the `aliyun-exporter` helm chart into that cluster.

### Setting Up AWS EKS Cluster

First, you need to create an EKS cluster. An EKS cluster provides the Kubernetes control plane. Pulumi provides a high-level library to create and manage EKS clusters easily with the `eks` package.

### Deploying the Helm Chart

After the cluster is up and running, you will deploy the `aliyun-exporter` Helm chart to the cluster. Pulumi's `kubernetes` package can install Helm charts directly onto your EKS cluster.

### Program Explanation

1. **EKS Cluster Creation**: The `eks.Cluster` resource is used to create an EKS cluster. The specifics, such as the instance type for worker nodes, name of the cluster, and desired capacity, are configurable. Here, we keep default values for simplicity.
   
2. **Helm Chart Deployment**: After the EKS cluster is provisioned, the `kubernetes.helm.v3.Chart` resource is used to install the `aliyun-exporter` Helm chart from its repository. You may provide any required configuration through the `values` argument.

### Pulumi Program in TypeScript

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

// Create an EKS cluster.
const cluster = new eks.Cluster("my-cluster", {});

// Export the cluster's kubeconfig.
export const kubeconfig = cluster.kubeconfig;

// Install the aliyun-exporter Helm chart into the cluster.
const aliyunExporterChart = new k8s.helm.v3.Chart("aliyun-exporter", {
    chart: "aliyun-exporter",
    version: "0.3.1", // Specify the version you'd like to deploy
    fetchOpts: {
        repo: "https://charts.kubeops.gardener.cn/", // Helm repository that contains the chart.
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeconfig }) });

// Reference: eks.Cluster - https://www.pulumi.com/registry/packages/eks/api-docs/cluster/
// Reference: kubernetes.helm.v3.Chart - https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm.sh/v3/chart/
```

### Next Steps

1. **Set up Pulumi**: Install the Pulumi CLI and set up your AWS credentials.
2. **Create a Pulumi Project**: Create a new Pulumi project and copy the code into `index.ts`.
3. **Deploy**: Run `pulumi up` to deploy your EKS cluster and the Helm chart.
4. **Use Your Cluster**: Once the deployment is complete, use the exported `kubeconfig` to interact with your Cluster using `kubectl`.

Keep in mind that you need to have Helm installed locally and configured with your Kubernetes cluster to deploy Helm charts, but Pulumi abstracts this by directly interfacing with the Helm CLI.

This program assumes that the `aliyun-exporter` Helm chart is compatible with your version of Kubernetes on EKS and is available in the specified Helm repository. If the chart has additional dependencies or configurations, you may need to modify the `values` parameter accordingly.