Deploy the assign-group-cronjob helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the `assign-group-cronjob` Helm chart on an AWS EKS cluster using Pulumi, you'll need to set up a few things:

1. A VPC to provide a network for your EKS cluster.
2. An EKS cluster itself, where your Kubernetes workloads will run.
3. The Helm chart as a Kubernetes resource applied onto the cluster.

Below is a Pulumi program in TypeScript that outlines these steps. Before running this, ensure you have the AWS and EKS Pulumi providers configured in your environment.

First, let's create a new VPC dedicated to your EKS cluster:

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

// Create a new VPC for your EKS cluster. Uses `awsx` which simplifies creating AWS resources.
const vpc = new awsx.ec2.Vpc("my-vpc", {});

// Create an EKS cluster.
const cluster = new eks.Cluster("my-cluster", {
  vpcId: vpc.id,
  subnetIds: vpc.privateSubnetIds,
  instanceType: "t2.medium", // instance type for the worker nodes.
  desiredCapacity: 2, // number of worker nodes
  minSize: 1,
  maxSize: 2,
  storageClasses: "gp2", // the storage class for the EBS volumes backing the worker nodes.
  deployDashboard: false, // We won't be deploying the Kubernetes dashboard
});
```

In the above lines, we first create a VPC specifically for your EKS cluster using the `awsx` package. Then, using the `eks` package, we create an EKS cluster and configure worker nodes details like instance type and the number of nodes.

Next, we'll start to configure the Kubernetes provider to interact with the EKS cluster and begin setting up the Helm chart:

```typescript
// 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 Helm chart `assign-group-cronjob` onto the EKS cluster
const assignGroupCronjobChart = new k8s.helm.v3.Chart("assign-group-cronjob-chart", {
  chart: "assign-group-cronjob",
  version: "1.2.3", // Specify the version of the chart you want to deploy
  // Include any values here to override the default values in the helm chart
  values: {
    // ... Your Helm values to configure `assign-group-cronjob`
  },
  // Specify the namespace if required or remove if you want to use the default namespace
  namespace: "default",
}, { provider: provider });
```

In this segment, we define a Kubernetes provider that leverages your newly created EKS cluster's kubeconfig, allowing Pulumi to communicate with the cluster.

We then declare a Helm chart resource, where we specify the chart name (`assign-group-cronjob`), version, and other configurations. You'll want to replace `1.2.3` with the version of the chart you're aiming to deploy, and within `values`, set any specific Helm values you need for your configuration.

Lastly, we can add some outputs for easy access to important information:

```typescript
// Export the cluster's kubeconfig and the endpoint
export const kubeconfig = cluster.kubeconfig;
export const clusterEndpoint = cluster.core.endpoint;
```

Adding these exports allows you to retrieve the kubeconfig and the cluster's endpoint once the Pulumi program has been applied.

To execute this Pulumi program, save the code in a file named `index.ts`, and then run `pulumi up` in the command line. Pulumi will perform the deployment according to the specifications in the above code.

Please note, before deploying this in a production environment, further configuration is recommended for items such as IAM roles, EC2 SSH keys, and more, to ensure your Kubernetes cluster's security and functionality.