Deploy the tftp helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the TFTP Helm chart on an AWS Elastic Kubernetes Service (EKS) cluster, you'll need to follow these high-level steps:

1. **Set up an EKS Cluster**: Provision an EKS cluster where your Kubernetes workloads will run.

2. **Deploy the Helm Chart**: Use the `helm.sh/v3.Chart` resource to deploy the TFTP Helm chart to the EKS cluster.

Below is a Pulumi TypeScript program that outlines these steps. The program assumes that you have AWS credentials configured for Pulumi to use.

Firstly, the program would define the requirements for an EKS cluster. It will create a new EKS cluster with default settings using the `eks.Cluster` component from `@pulumi/eks`, which is a high-level Pulumi package to manage EKS clusters.

Secondly, for the Helm chart deployment, it will use the `Chart` resource from the `@pulumi/kubernetes` package, specifying the TFTP chart.

Let's go through the program that sets up an EKS Cluster and then deploys the TFTP Helm chart onto it:

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

// Create an EKS cluster.
const cluster = new eks.Cluster('tftp-cluster', {
    instanceType: 't2.medium',
    desiredCapacity: 2,
    minSize: 1,
    maxSize: 3,
    storageClasses: 'gp2',
    deployDashboard: false,
});

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

// Create a Kubernetes provider instance that uses our EKS kubeconfig.
const provider = new k8s.Provider('k8s-provider', {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Deploy the tftp helm chart using the Kubernetes provider.
const tftpChart = new k8s.helm.v3.Chart('tftp', {
    chart: 'tftp',
    version: 'your-chart-version', // Specify the version of your TFTP chart, e.g., "1.2.3"
    fetchOpts: {
        repo: 'http://charts.example.com/', // Replace with the actual repository URL
    },
}, { provider });

```

In this program:

- We instantiated an EKS cluster with a medium-sized EC2 instance type that is suitable for a small workload. We've also set up the number of desired instances in the cluster and the range it can scale.
  
- The `kubeconfig` variable is exported, which will allow you to use tools like `kubectl` to interact with your cluster outside of Pulumi.

- We're using the Pulumi's Kubernetes provider to ensure that the Helm chart is deployed using the kubeconfig of the EKS cluster we created.

- The `helm.v3.Chart` resource is utilized to deploy the TFTP Helm chart. You need to replace `'your-chart-version'` with the actual version of the Helm chart you intend to deploy and `'http://charts.example.com/'` with the URL of the Helm chart repository that contains the TFTP chart.

Finally, run the Pulumi program to provision the resources. You can do this with the Pulumi command-line tool using the `pulumi up` command.

Remember, this example deploys a Helm chart using only default values. Helm charts often require custom values. You would add those through the `values` property on the `helm.v3.Chart` class instance.

Before running the program, ensure you have installed the necessary Pulumi packages by running `npm install` or `yarn` in the directory where your `Pulumi.yaml` and TypeScript program file reside.