Deploy the rke2-multus helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the `rke2-multus` Helm chart on AWS EKS using Pulumi, you first need to create an EKS cluster and then deploy the Helm chart to it. We'll use the `@pulumi/eks` and `@pulumi/kubernetes` packages to achieve this. The `@pulumi/eks` is a high-level Pulumi component that simplifies the creation of EKS clusters, and `@pulumi/kubernetes` allows us to work with Kubernetes resources.

Below is a Pulumi program in TypeScript that will:

1. Create an EKS cluster.
2. Create a Kubernetes provider that targets the EKS cluster.
3. Deploy the `rke2-multus` Helm chart using the created provider.

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

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

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

// Create a Kubernetes provider instance that uses our EKS cluster's kubeconfig.
const provider = new k8s.Provider("k8s-provider", {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Deploy the `rke2-multus` Helm chart to the EKS cluster using the Kubernetes provider.
const rke2MultusChart = new k8s.helm.v3.Chart("rke2-multus", {
    chart: "rke2-multus",
    fetchOpts: {
        repo: "https://helm-repo-url.com", // Replace with the Helm repo URL where `rke2-multus` is hosted
    }
}, { provider });

// Export the Helm chart resources.
export const helmChartResources = rke2MultusChart.resources;
```

### Explanation:

- The `eks.Cluster` resource creates a new EKS cluster. The name "my-eks-cluster" is what the cluster will be called in AWS. By not specifying any additional options, this resource will create the cluster with the default settings, including the default instance types and the default number of nodes. ([EKS Cluster Resource Docs](https://www.pulumi.com/registry/packages/eks/api-docs/cluster/)).

- We then export the `kubeconfig` which is the configuration needed to connect to the cluster with `kubectl` and other Kubernetes tools. This `kubeconfig` will be automatically generated by Pulumi.

- We create a new `k8s.Provider`, which is how Pulumi communicates with a Kubernetes cluster. By passing the generated `kubeconfig` to this provider, we tell Pulumi that it should manage Kubernetes resources in the EKS cluster we just created.

- The `k8s.helm.v3.Chart` resource is where we specify the deployment of the `rke2-multus` Helm chart. We specify the name of the chart and the repository where it's located with the `repo` field in `fetchOpts`. You need to replace `https://helm-repo-url.com` with the actual URL where the `rke2-multus` chart is stored. This chart will be deployed into the EKS cluster using the `k8s.Provider` we defined earlier.

To use this code, you will need to have Pulumi and AWS CLI set up and configured. Save this code in a file named `index.ts`, and then you can deploy it by running `pulumi up` in the same directory as your code. This will start the Pulumi deployment process.

Please note that you need to replace `https://helm-repo-url.com` with the actual Helm repository URL where the `rke2-multus` chart is stored. If there are any additional configuration parameters you want to set for the Helm chart, you can do so by adding a `values` property within the `k8s.helm.v3.Chart` resource.