Deploy the knative-installer helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the `knative-installer` Helm chart on AWS EKS using Pulumi, you will need to perform a few key steps.

Firstly, you need to provision an Amazon EKS cluster. For this task, we will use the `eks.Cluster` resource from the Pulumi EKS package. This package simplifies the process of creating and managing an EKS cluster.

Once the EKS cluster is set up, you need to deploy the `knative-installer` using the `kubernetes.helm.v3.Chart` resource from the Pulumi Kubernetes provider, which allows you to deploy Helm charts.

Below is a Pulumi program written in TypeScript that demonstrates these steps:

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

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

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

// Deploy the knative-installer Helm chart to the EKS cluster.
const knativeInstallerChart = new k8s.helm.v3.Chart("knative-installer", {
  chart: "knative-installer",
  version: "YOUR_CHART_VERSION", // Replace with the desired chart version
  fetchOpts: {
    repo: "YOUR_HELM_CHART_REPO_URL", // Replace with the URL of the Helm chart repository
  }
}, { provider: cluster.provider });

// Export the status of the deployment.
export const knativeChartStatus = knativeInstallerChart.status;
```
This program creates an EKS cluster and deploys the `knative-installer` Helm chart to it. You must replace `YOUR_HELM_CHART_REPO_URL` and `YOUR_CHART_VERSION` with the actual Helm chart repository URL and desired chart version of `knative-installer`.

Explanation of resources used:

1. `eks.Cluster`: Represents an AWS EKS cluster. Here the resource is declared with a name `"my-cluster"` and with the default configuration, which will create an EKS cluster with all the necessary resources, such as the VPC and EC2 instances for the worker nodes. ([EKS Cluster Documentation](https://www.pulumi.com/registry/packages/eks/api-docs/cluster/))

2. `k8s.helm.v3.Chart`: This resource is used to deploy Helm charts on a Kubernetes cluster. Here, we specify the chart name `"knative-installer"` and the version. We also provide `fetchOpts` with the URL of the Helm chart repository. This resource is dependent on the cluster created previously, which is why we pass the `provider: cluster.provider` argument to ensure the Helm chart is installed on the right cluster. ([Helm Chart Documentation](https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/chart/))

After writing this program, you will need to install Pulumi if you haven't already, set up your AWS credentials for Pulumi to use, and then run:

```
pulumi up
```

This command will preview the changes, and upon confirmation, apply them to your cloud provider (AWS in this case), which will provision an EKS cluster and deploy the `knative-installer` Helm chart to it. After execution, it will output the kubeconfig which you can use with `kubectl` to interact with your EKS cluster and check the status of your `knative-installer` Helm chart deployment.