Deploy the flask-note helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the `flask-note` Helm chart on AWS Elastic Kubernetes Service (EKS), you will need to follow these steps:

1. Set up an EKS cluster: Use the Pulumi EKS package to create and configure your EKS cluster appropriately.
2. Deploy the Helm chart: Use the Pulumi Kubernetes provider to deploy the `flask-note` Helm chart to your EKS cluster.

We'll create a Pulumi program in TypeScript, which will include:

- Creating an EKS cluster with all necessary configurations.
- Deploying the `flask-note` Helm chart to the EKS cluster.

### EKS Cluster Creation

We start by creating an EKS cluster. This involves creating a VPC (or specifying an existing one), defining subnets, and setting up the necessary IAM roles for EKS. We will use the high-level `eks.Cluster` resource, which simplifies this process.

### Helm Chart Deployment

After setting up the EKS cluster, we will deploy the Helm chart. The chart should be available in a Helm repository or a local path. For illustration purposes, I'll assume you have added the chart to a Helm repository.

Here's the Pulumi program that accomplishes these steps:

```typescript
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("flask-note-cluster", {});

// Create a Kubernetes provider instance using the kubeconfig from the EKS cluster
const k8sProvider = new k8s.Provider("flask-note-k8sProvider", {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Deploy the flask-note helm chart to the EKS cluster
const flaskNoteChart = new k8s.helm.v3.Chart("flask-note-chart", {
    chart: "flask-note",
    version: "1.0.0", // replace with the actual chart version
    fetchOpts: {
        repo: "http://your-helm-chart-repository", // replace with the actual Helm chart repository URL
    },
}, { provider: k8sProvider });

// Export the cluster's kubeconfig and the Helm chart deployment status
export const kubeconfig = cluster.kubeconfig;
export const chartStatus = flaskNoteChart.status;
```

### Detailed Explanation:

- `@pulumi/eks` is the Pulumi EKS package that handles the creation of EKS clusters easily.
- `eks.Cluster` allows us to create an EKS cluster. It abstracts away many of the underlying resources needed and provides sane defaults.
- `@pulumi/kubernetes` is the Pulumi Kubernetes provider that allows us to interact with the cluster, including deploying Helm charts.
- `k8s.Provider` is used to create a Kubernetes provider object. This allows Pulumi to communicate with the EKS cluster we've created to deploy applications.
- `k8s.helm.v3.Chart` represents a Helm chart for deployment, which we're using to deploy the `flask-note` application onto our EKS cluster.

### Follow-up Steps:

After deploying this Pulumi program with `pulumi up`, Pulumi will output the kubeconfig needed to interact with your EKS cluster directly via `kubectl` or other Kubernetes tooling.

Your `flask-note` application should now be running on an AWS EKS cluster! You can verify its presence by using the Kubernetes tools (`kubectl`) to check the deployed services, pods, and more within the specified namespace of the Helm chart release.

Remember to check the official [Pulumi EKS documentation](https://www.pulumi.com/docs/guides/crosswalk/aws/eks/) and [Pulumi Kubernetes documentation](https://www.pulumi.com/docs/intro/cloud-providers/kubernetes/) for more details on using EKS and Kubernetes with Pulumi.