Deploy the springboot helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy a Spring Boot application using a Helm chart on an AWS Elastic Kubernetes Service (EKS) cluster, we need to perform several steps:

1. **Create an EKS cluster**: This is the Kubernetes cluster managed by AWS where our application will run.
2. **Deploy the Helm chart**: Helm is a package manager for Kubernetes, and it is used to deploy pre-packaged applications called Helm charts. We'll assume that there's a pre-existing Helm chart for the Spring Boot application.

Below is a Pulumi program in TypeScript that accomplishes these tasks. The program uses the `@pulumi/aws` and `@pulumi/awsx` packages to create an EKS cluster and the `@pulumi/kubernetes` package to deploy the Helm chart.

Before diving into the code, ensure that you have Pulumi installed and configured for use with AWS, and that you have a Pulumi account to manage your state. More information can be found in the [Pulumi AWS Setup Guide](https://www.pulumi.com/registry/packages/aws/installation-configuration/).

Now, here's a Pulumi TypeScript program that creates an EKS cluster and deploys a Spring Boot application using a Helm chart:

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

// Create an EKS cluster.
const cluster = new eks.Cluster("my-cluster", {
    instanceType: "t2.medium",
    desiredCapacity: 2,
    minSize: 1,
    maxSize: 2,
});

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

// Deploy the Spring Boot helm chart to the EKS cluster.
// Replace `chart-name` and `repository-url` with the real name and URL for your Spring Boot helm chart.
const springBootChart = new k8s.helm.v3.Chart("springboot-chart", {
    chart: "chart-name",
    version: "chart-version", // Optional: specify the chart version.
    fetchOpts: {
        repo: "repository-url",
    },
}, { provider: cluster.provider });

// Export the Spring Boot service endpoint to access the deployed application.
// Replace `serviceName` with the actual name of the service defined in the Helm chart.
export const serviceEndpoint = cluster.getKubernetesService("serviceName").status.loadBalancer.ingress[0].hostname;
```

In the code above:

- We import the required Pulumi packages.
- We create an EKS cluster using the `eks.Cluster` class.
- We construct a `kubeconfig` export that allows us to interact with the cluster using `kubectl`.
- We then define a `k8s.helm.v3.Chart` resource for the Spring Boot application, specifying the chart name and repository.
- Optionally, we've included a `version` property in the `Chart` resource. This should be replaced with the specific chart version you want to deploy.
- We export a `serviceEndpoint`, which assumes your Helm chart creates a `Service` with a `LoadBalancer`. Replace `serviceName` with the actual name of the service to get the endpoint URL.

After you have defined the above program in a file named `index.ts`, run `pulumi up` in the command line to preview and deploy the resources.

**Note**: Ensure you replace `chart-name`, `repository-url`, and `serviceName` with the actual values for the Spring Boot helm chart you are using. If your chart doesn't include a LoadBalancer service, you may need to use a different method to export the application's endpoint.