Deploy the hono helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the Hono helm chart on an AWS EKS (Elastic Kubernetes Service) cluster using Pulumi, you will need to perform the following steps:

1. Create an EKS cluster.
2. Create necessary AWS resources (like an IAM role for the EKS cluster).
3. Deploy the Hono helm chart to the EKS cluster.

Here’s a step-by-step Pulumi program in TypeScript that accomplishes these tasks:

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

// Step 1: Create an EKS cluster
const cluster = new eks.Cluster("hono-eks-cluster", {
    // Define the number and type of instances for the node group.
    desiredCapacity: 2,
    minSize: 1,
    maxSize: 3,
    instanceType: "t2.medium",
});

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

// Step 2: Create an instance of the Kubernetes provider with the EKS cluster kubeconfig.
const provider = new k8s.Provider("k8s-provider", {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Step 3: Deploy the Hono helm chart to the EKS cluster using the helm provider.
const honoChart = new k8s.helm.v3.Chart("eclipse-hono", {
    // Specify the Helm chart repository and chart name.
    chart: "eclipse-hono",
    fetchOpts: { repo: "https://eclipse.org/packages/charts" },
    // Specify the namespace and values configurations for the chart.
    namespace: "default",
    values: {
        // This is where you would set any necessary values for the hono helm chart.
        // For example, set to `false` if you don't want to create an Ingress resource.
        createIngress: true,
    }, 
}, { provider });

// Export the endpoint to access the Hono application
export const honoEndpoint = honoChart.getResourceProperty("v1/Service", "eclipse-hono", "status").loadBalancer.ingress[0].hostname;
```

Explanation:

1. **Create an EKS cluster**: We create an EKS cluster with a desired capacity of 2 nodes, with a minimum size of 1 and a maximum size of 3. The instance type used is `t2.medium` for the worker nodes. The `eks.Cluster` resource abstracts away much of the complexity in setting up an EKS cluster.

2. **Kubernetes Provider**: After the cluster is created, we instantiate a Kubernetes provider that uses the kubeconfig from our EKS cluster. This provider is necessary to interface with our K8s cluster and to deploy helm charts or other Kubernetes resources.

3. **Deploy Hono helm chart**: The `k8s.helm.v3.Chart` resource is used to deploy the eclipse Hono helm chart from its repository. We configure the provider to interact with the Kubernetes cluster that we’ve just created.

4. **Exports**: The program exports the kubeconfig for the EKS cluster and the Hono application endpoint. The kubeconfig is necessary for you to interact with your cluster using `kubectl`. The endpoint export provides the DNS name to access the Hono application once all the services are deployed and configured correctly by the helm chart and any ingresses are setup and allocated an external IP or DNS by AWS.

Please adjust the helm chart `values` field according to the specific configuration you want to deploy with the Hono Helm chart. Additionally, the instance types, and other EKS settings can be modified to fit the needs of the deployment.