Deploy the ibm-calico-bgp-peer helm chart on AWS EKS

Question

Pulumi · Accepted Answer

In order to deploy the `ibm-calico-bgp-peer` Helm chart on an AWS Elastic Kubernetes Service (EKS) cluster with Pulumi, we must follow a few basic steps:

1. Set up an EKS Cluster: Create an EKS cluster to which you'll deploy the Helm chart.
2. Deploy the Helm Chart: Once the EKS cluster is up and running, you'll deploy the `ibm-calico-bgp-peer` Helm chart to this cluster.

Below is a basic TypeScript program that outlines these steps using Pulumi. The program is split into two parts: creating an EKS cluster and deploying the Helm chart to that cluster. Comments in the code will guide you through what each part does.

Firstly, ensure you've got Pulumi and the AWS CLI configured with the appropriate access keys and region selection.

Here is a Pulumi TypeScript program that performs these actions:

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

// Step 1: Create an EKS cluster.
// This code defines an EKS cluster in AWS. The `vpcId` and `subnetIds` should be replaced with
// your existing VPC and Subnet IDs where you want to provision the cluster.
const vpcId = "vpc-0abcdef"; // Replace with your VPC ID
const subnetIds = ["subnet-0abcdeff", "subnet-0abcdef0"]; // Replace with your Subnet IDs

const cluster = new eks.Cluster("my-cluster", {
    vpcId: vpcId,
    privateSubnetIds: subnetIds,
    instanceType: "t2.medium", // instance type for the EKS cluster, modify as needed
    desiredCapacity: 2, // number of instances to scale to
    minSize: 1, // minimum number of instances
    maxSize: 3, // maximum number of instances
    storageClasses: "gp2", // default EBS storage class
    deployDashboard: false, // EKS dashboard is not typically recommended
});

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

// Step 2: Deploy the Helm chart to the EKS cluster.
// The following code creates a Helm Release for the `ibm-calico-bgp-peer` chart.
// Ensure that Helm and Tiller are installed on your EKS cluster and that you have added the
// necessary Helm repository that contains the `ibm-calico-bgp-peer` chart.

const helmChart = new k8s.helm.v3.Chart("ibm-calico-bgp-peer", {
    // The location of the Helm chart is assumed to be in the helm repo added.
    // If it's a custom Helm chart, the `repo` attribute should point to its location.
    chart: "ibm-calico-bgp-peer",
    version: "v0.1.0", // Replace with the correct chart version
    namespace: "kube-system", // The namespace for deploying the Helm chart
    // Values to pass to the Helm chart per the `values.yaml` file.
    values: {
        bgp: {
            peering: {
                // The specific BGP peering configuration values would go here
            },
        },
    },
}, { provider: cluster.provider });

// Export the Helm chart status
export const helmStatus = helmChart.status;
```

This program will do the following:

- Create an EKS cluster in the specified VPC and subnets. Ensure you replace `"vpc-0abcdef"` and `["subnet-0abcdeff", "subnet-0abcdef0"]` with the actual IDs of your VPC and subnets.
- Once the cluster is created, Pulumi will output the kubeconfig file necessary to connect to the cluster via kubectl or any Kubernetes client library.
- It defines a `k8s.helm.v3.Chart` resource which represents the Helm chart we want to deploy.
- It specifies the version of the Helm chart and the namespace where the chart should be installed. The `values` attribute would hold any custom configuration that the Helm chart allows. Update this section based on the `values.yaml` of the specific Helm chart for ibm-calico-bgp-peer.
- Finally, it exports the `helmStatus` to know the deployment status of the Helm chart.

Remember to replace chart version, value section with the appropriate values that suit the ibm-calico-bgp-peer Helm chart configuration that you are using. Additionally, you might need to configure Helm and Tiller on your EKS cluster if it's not already done.

Run this program with Pulumi CLI using the following commands:

```sh
pulumi up # To preview and deploy changes
pulumi stack export kubeconfig > kubeconfig.json # To generate kubeconfig
```

This will create the EKS cluster and deploy your Helm chart, and you'd be ready to manage the ibm-calico-bgp-peer settings on your AWS EKS cluster.