Deploy the lustre-aws-fsx helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `lustre-aws-fsx` Helm chart on Kubernetes using Pulumi, you'll first need a Kubernetes cluster and the FSx for Lustre file system available in your AWS environment. Pulumi's `aws.fsx.LustreFileSystem` resource can be used to create an FSx for Lustre file system. For Kubernetes, you might be using an Amazon EKS cluster, which you can manage using Pulumi's `aws.eks.Cluster` resource.

Once the prerequisites are in place, you'll use the `kubernetes.helm.sh/v3.Chart` resource to deploy the Helm chart to your cluster. This resource allows you to specify the chart name, values, version, and other configurations as you would with traditional `helm` commands.

Below is the Pulumi program written in TypeScript that accomplishes the following steps:
1. **Set up the AWS infrastructure**: This includes creating an EKS cluster and an FSx for Lustre file system.
2. **Deploy the Helm chart**: Once we have a Kubernetes cluster and the FSx for Lustre file system, we will deploy the Lustre Helm chart to the cluster.

Here's a detailed TypeScript program that guides you through this process:

```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';

// Create an EKS cluster.
const cluster = new eks.Cluster('eks-cluster', {
    // Specifying the version is a best practice for production clusters
    version: '1.21'
});

// Export the kubeconfig so that the Kubernetes provider can use it to communicate with the cluster.
export const kubeconfig = cluster.kubeconfig;

// Create an AWS FSx for Lustre file system.
const lustreFileSystem = new aws.fsx.LustreFileSystem('lustre-fs', {
    storageCapacity: 1200, // The storage capacity in GiB.
    subnetIds: 'subnet-xxxxxxxxxxxxxxxxx', // Replace with your subnet id
    securityGroupIds: ['sg-xxxxxxxxxxxxxxxxx'], // Replace with your security group id
    tags: {
        Name: 'pulumi-lustre-fs'
    },
    // Make sure to provide specific configuration that suits your needs
    deploymentType: 'PERSISTENT_1',
    // Here we use PERSISTENT_1 for making sure data is not lost after file server shutdown
    perUnitStorageThroughput: 200, // Specify throughput capacity
});

// The Helm chart for FSx for Lustre could be a custom one or available in a specific Helm repository.
// Ensure you have the right `repo` and `chart` name.
const fsxHelmChart = new k8s.helm.sh.v3.Chart('fsx-lustre-chart', {
    chart: 'lustre-aws-fsx',
    // Assuming 'lustre-aws-fsx' is the chart name and it's available in the chart repository below.
    fetchOpts: {
        repo: 'https://your-helm-chart-repository/', // Specify the Helm chart repo URL here
    },
    values: {
        // Specify your Helm chart values here. For example:
        fsx: {
            dnsName: lustreFileSystem.dnsName,
            mountName: lustreFileSystem.mountName,
        },
    },
}, { provider: cluster.provider });

// Export the Helm chart status
export const helmChartStatus = fsxHelmChart.status;
```

**Explanation**:
- We import the necessary Pulumi libraries for AWS, EKS, Kubernetes, and the basic Pulumi package.
- We create an AWS EKS cluster using the `eks.Cluster` resource. The `version` parameter is important to define which version of Kubernetes we want to use.
- We export the `kubeconfig` from the EKS cluster which will be used by Pulumi to deploy Helm charts to the cluster.
- We then create an FSx for Lustre filesystem using `aws.fsx.LustreFileSystem` and provide essential properties such as `storageCapacity`, `subnetIds`, `securityGroupIds`, and `tags`.
- With our Kubernetes cluster and FSx file system ready, we proceed to deploy the Helm chart using the `k8s.helm.sh/v3.Chart` resource. We specify the chart name, repository URL, and any values needed by the chart. The chart values should be updated based on the actual configuration required for your `lustre-aws-fsx` Helm chart.
- We then export the Helm chart status which gives us information on whether our Helm chart was deployed successfully or not.

To use the above Pulumi program:
- Ensure you have Pulumi installed.
- You'll also need to have the AWS CLI configured with the appropriate credentials to create resources in your AWS account.
- Replace placeholder values such as `subnet-xxxxxxxxxxxxxxxxx` and `sg-xxxxxxxxxxxxxxxxx` with actual values from your AWS VPC.
- Confirm the Helm chart details (`chart`, `values`, and `fetchOpts.repo`) to match the specific `lustre-aws-fsx` Helm chart you intend to deploy.

This Pulumi program would be run using the Pulumi CLI, which will perform the steps to set up the EKS cluster and FSx file system, and then deploy the Helm chart to your cluster. Make sure to review every piece of the code to adjust any value to your specific requirements.