Deploying a Web App Using Elastic Kubernetes Service in AWS

You’re deploying a web app on Elastic Kubernetes Service (EKS) that consists of multiple nodes. This web app is made up of multiple microservices that are deployed as Kubernetes deployments on EKS. One of them is a frontend service that is responsible for displaying a website. Your mission is to set up this entire cluster and ensure that the web app is working as expected.

To accomplish this, you will complete the following tasks:

• Create the cluster.
• Configure the frontend on the cluster.
• Test the cluster to ensure you can access the functioning website and have high availability.

Use the following commands to create the cluster:

Download AWS CLI version 2.

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"

Install AWS CLI version 2.

sudo ./aws/install --bin-dir /usr/bin --install-dir /usr/bin/aws-cli --update

Download kubectl.

curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.25.6/2023-01-30/bin/linux/amd64/kubectl

Create the directory.

mkdir -p $HOME/bin && cp ./kubectl $HOME/bin/kubectl && export PATH=$PATH:$HOME/bin

Download eksctl.

curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp

Create the cluster.

eksctl create cluster --name myeks --region us-east-1 --zones=us-east-1a,us-east-1b --nodegroup-name eks-workers --node-type t3.medium --nodes 2 --nodes-min 2 --nodes-max 4 --managed

Use the following YAML code to configure the frontend for the application:

apiVersion: v1
kind: Service
metadata:
  name: vote-service
  labels:
    app: vote
spec:
  selector:
    app: vote
  ports:
    - name: http
      port: 80
      targetPort: 80
    - name: udp
      port: 5000
      targetPort: 5000
  type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: vote-deployment
  labels:
    app: vote
spec:
  replicas: 2
  selector:
    matchLabels:
      app: vote
  template:
    metadata:
      labels:
        app: vote
    spec:
      containers:
        - name: vote
          image: dockersamples/examplevotingapp_vote:before
          ports:
            - name: http
              containerPort: 80
            - name: udp
              containerPort: 5000