Deploy the smtp4dev helm chart on AWS EKS
TypeScriptIn order to deploy the
smtp4dev
Helm chart on AWS EKS using Pulumi, you need to go through a few steps:- Set up an Amazon EKS cluster using Pulumi's AWS provider.
- Configure
kubectl
to communicate with the EKS cluster. - Deploy the
smtp4dev
Helm chart to the EKS cluster using Pulumi's Kubernetes provider.
Let's break down each step into details:
Step 1: Setting up an Amazon EKS Cluster
First, you'll create an EKS cluster, which is a managed Kubernetes service provided by AWS. Using Pulumi's
awsx
package simplifies this process significantly, providing higher-level abstractions that streamline the creation of a cluster.The
eks.Cluster
class from thepulumi/eks
library will be used to create an EKS cluster. It automatically sets up all the resources that EKS requires, such as the VPC, subnets, and necessary IAM roles.Step 2: Configuring
kubectl
After creating the EKS cluster,
kubectl
needs to be configured with the appropriate context to communicate with the cluster. Pulumi returns the kubeconfig as an output of the cluster which can be used to set upkubectl
.Step 3: Deploying the Helm chart
Lastly, you will install the
smtp4dev
Helm chart. We will use theChart
resource frompulumi/kubernetes/helm/v3
, which allows you to manage Helm chart deployments programmatically.Here is the full Pulumi program in TypeScript that demonstrates these steps:
import * as pulumi from "@pulumi/pulumi"; import * as awsx from "@pulumi/awsx"; import * as eks from "@pulumi/awsx/ec2"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Create a new EKS cluster. const cluster = new eks.Cluster("smtp4dev-cluster", { // Specify the desired settings for the cluster (min/max size, instance type, etc.) desiredCapacity: 2, minSize: 1, maxSize: 2, instanceType: "t2.medium", }); // Export the clusters' kubeconfig. export const kubeconfig = cluster.kubeconfig; // Step 3: Deploy the smtp4dev Helm chart on the EKS cluster. const smtp4devChart = new k8s.helm.v3.Chart("smtp4dev", { chart: "smtp4dev", version: "1.0.0", // Use the desired version of the smtp4dev chart fetchOpts: { repo: "https://helm-charts-path.where.smtp4dev.is.hosted/", // Replace with the correct repo URL }, namespace: "default", // Deploy to the default namespace, or specify one }, { provider: cluster.provider }); // Ensure we're using the EKS cluster as our provider. // When running 'pulumi up', Pulumi will provision all of the above resources in AWS.
Explanation of the Resources Used:
-
eks.Cluster
: This resource creates a new Amazon EKS cluster. In this program, I specify the desired capacity of nodes, the minimum and maximum size of the auto-scaling group, and the instance type to be used in the EKS cluster. -
kubeconfig
: This output represents the configuration needed forkubectl
to communicate with the Amazon EKS cluster. It's useful if you want to manage Kubernetes resources withkubectl
in addition to Pulumi. -
k8s.helm.v3.Chart
: This resource represents a Helm chart. In this case, it's used to deploysmtp4dev
. The necessary properties such aschart
,version
, andfetchOpts
(where to fetch the chart from) are specified. This resource is dependent on the EKS cluster's provider to ensure it deploys into the right Kubernetes cluster.
How to Run The Program:
- Install Pulumi and configure it for use with AWS.
- Create a new Pulumi project and set the runtime to
typescript
. - Install the necessary Pulumi packages using npm or yarn.
npm install @pulumi/pulumi @pulumi/awsx @pulumi/kubernetes
- Replace the contents of
index.ts
with the code provided above. - Run
pulumi up
to create the EKS cluster and deploy thesmtp4dev
Helm chart.
Keep in mind that you will be charged by AWS for the resources used. Make sure to destroy the resources using
pulumi destroy
when they're no longer needed to avoid unnecessary charges.