1. Deploy the mongodb-backup-aws helm chart on AWS EKS


    To deploy the MongoDB backup Helm chart on AWS EKS using Pulumi, we will perform the following steps:

    1. Create an EKS Cluster, which will serve as the environment where our Kubernetes resources will run.
    2. Deploy a Helm chart that sets up MongoDB and presumably its backup solution onto the EKS cluster.

    We will use the following Pulumi resources:

    • eks.Cluster from the @pulumi/eks package, which simplifies creating and configuring an EKS cluster.
    • Chart from the @pulumi/kubernetes/helm/v3 package to deploy the Helm chart onto our Kubernetes cluster.

    Let's go through the Pulumi TypeScript program.

    First, you need to install the required npm packages by running:

    npm install @pulumi/pulumi @pulumi/awsx @pulumi/eks @pulumi/kubernetes

    Then, you can create a new TypeScript file index.ts where you will define the Pulumi program:

    import * as pulumi from "@pulumi/pulumi"; import * as awsx from "@pulumi/awsx"; import * as eks from "@pulumi/eks"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Create an EKS cluster. const cluster = new eks.Cluster("my-mongo-cluster", { desiredCapacity: 2, // The number of worker nodes for the EKS cluster. minSize: 1, // The minimum number of worker nodes for the EKS cluster. maxSize: 3, // The maximum number of worker nodes for the EKS cluster. storageClasses: "gp2", // The default storage class will use the AWS gp2 volume type. deployDashboard: false, // Skip deployment of the Kubernetes dashboard. }); // Step 2: Deploy the MongoDB Helm chart onto the EKS cluster. const mongoDbChart = new k8s.helm.v3.Chart("mongodb-backup", { chart: "mongodb-backup", version: "1.0.0", // Replace this with the version of the chart you wish to deploy. fetchOpts: { // Specify the repository where your Helm chart is located. repo: "https://charts.example.com/", // Replace this with the actual Helm chart repository URL. }, }, { provider: cluster.provider }); // Export the Kubernetes cluster name and kubeconfig. export const kubeConfig = cluster.kubeconfig; export const clusterName = cluster.eksCluster.name; // Export a kubeconfig that does not require authentication for testing purposes. export const kubeconfigNoAuth = pulumi. all([cluster.eksCluster.name, cluster.eksCluster.endpoint, cluster.eksCluster.certificateAuthority]). apply(([name, endpoint, ca]) => { return `apiVersion: v1 clusters: - cluster: server: ${endpoint} certificate-authority-data: ${ca.data} name: ${name} contexts: - context: cluster: ${name} user: ${name} name: ${name} current-context: ${name} kind: Config preferences: {} users: - name: ${name} user: client-certificate-data: ${ca.data} client-key-data: ${ca.data} `; });

    In the code above:

    • A new EKS cluster is provisioned using the eks.Cluster class. The cluster's node group configuration is designed to be changeable, with node counts ranging from 1 to 3.

    • We deploy a Kubernetes Helm chart named mongodb-backup using Pulumi's Helm support. The k8s.helm.v3.Chart resource is used to deploy the MongoDB Helm chart to our cluster. Make sure that the repo URL and version match with where your actual Helm chart is located and what version you wish to deploy.

    • The kubeConfig and clusterName are exported. These can then be used to interface with your EKS cluster using kubectl and other Kubernetes tools.

    • The kubeconfigNoAuth is for testing purposes to easily connect to your cluster without setting up an IAM authenticator, but this should never be done in a production environment.

    To run this Pulumi program, you need to set up your AWS credentials and have Pulumi CLI installed. When these prerequisites are satisfied, you can execute the program using the pulumi up command, which will deploy the resources defined in the program to your AWS account.