Implementing CI/CD Pipelines With EKS and Jenkins

In this solution, we will implement a CI/CD pipeline using Amazon EKS (Elastic Kubernetes Service) and Jenkins with Pulumi in TypeScript. The key services involved in this solution are Amazon EKS for container orchestration, Jenkins for continuous integration and continuous deployment, and Pulumi for infrastructure as code.

Step-by-Step Explanation

1. Set up an EKS Cluster: We will create an EKS cluster using Pulumi. This involves creating a VPC, subnets, and the EKS cluster itself.
2. Deploy Jenkins on EKS: We will deploy Jenkins on the EKS cluster. This involves creating a Kubernetes namespace for Jenkins, deploying Jenkins using a Helm chart, and configuring Jenkins to use persistent storage.
3. Configure Jenkins for CI/CD: We will configure Jenkins to use Kubernetes agents for running CI/CD pipelines. This involves setting up Jenkins credentials, configuring the Jenkins Kubernetes plugin, and creating a sample pipeline.

Key Points

• Amazon EKS: A managed Kubernetes service that makes it easy to run Kubernetes on AWS without needing to install and operate your own Kubernetes control plane or nodes.
• Jenkins: An open-source automation server that enables developers to build, test, and deploy their software.
• Pulumi: An infrastructure as code tool that allows you to define and manage cloud resources using programming languages like TypeScript.

Conclusion

By following this solution, you will have a fully functional CI/CD pipeline running on Amazon EKS with Jenkins. This setup leverages the power of Kubernetes for container orchestration, Jenkins for automation, and Pulumi for infrastructure management, providing a scalable and efficient CI/CD solution.

Full Code Example

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 a VPC for the EKS cluster
const vpc = new aws.ec2.Vpc("eksVpc", {
    cidrBlock: "10.0.0.0/16",
    enableDnsHostnames: true,
    enableDnsSupport: true,
});

// Create subnets for the VPC
const subnet1 = new aws.ec2.Subnet("subnet1", {
    vpcId: vpc.id,
    cidrBlock: "10.0.1.0/24",
    availabilityZone: "us-west-2a",
});

const subnet2 = new aws.ec2.Subnet("subnet2", {
    vpcId: vpc.id,
    cidrBlock: "10.0.2.0/24",
    availabilityZone: "us-west-2b",
});

// Create an EKS cluster
const cluster = new eks.Cluster("eksCluster", {
    instanceType: "t3.medium",
    desiredCapacity: 2,
    minSize: 1,
    maxSize: 3,
    vpcId: vpc.id,
    publicSubnetIds: [subnet1.id, subnet2.id],
});

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

// Create a Kubernetes provider instance
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: cluster.kubeconfig,
});

// Create a namespace for Jenkins
const jenkinsNamespace = new k8s.core.v1.Namespace("jenkinsNamespace", {
    metadata: { name: "jenkins" },
}, { provider: k8sProvider });

// Deploy Jenkins using Helm chart
const jenkins = new k8s.helm.v3.Chart("jenkins", {
    chart: "jenkins",
    version: "3.5.9",
    namespace: jenkinsNamespace.metadata.name,
    values: {
        persistence: {
            enabled: true,
            storageClass: "gp2",
            size: "8Gi",
        },
        master: {
            adminUser: "admin",
            adminPassword: "admin",
        },
    },
}, { provider: k8sProvider });

// Export the EKS cluster name and Jenkins URL
export const eksClusterName = cluster.eksCluster.name;
export const jenkinsUrl = pulumi.interpolate`http://${jenkins.getResource("v1/Service", "jenkins", "jenkins").status.loadBalancer.ingress[0].hostname}:8080`;