Friday, May 20, 2022

Automate EKS Cluster using Bootstrap Script | Bootstrap script for setting up Jenkins, Docker and EKS Cluster in AWS cloud

Pre-requistes:

You need to create an IAM role with Administrator Access policy and attach that IAM role to EC2 instance while you provision.

Click on Advanced Details and under user data:

Script for setting up Jenkins, Docker and setting EKS cluster using eksctl command:

#!/bin/bash

# Shell script for installing Java,  Maven, Jenkins, EKS Cluster in Ubuntu EC2 instance

# Command for installing Java 11

sudo apt-get update

sudo apt-get install default-jdk -y

# Command for installing maven

sudo apt-get install maven -y

# Script for Jenkins installation

#Add Repository key to the system

wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -

#  Append debian package repo address to the system

echo deb http://pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list

sudo apt-get update

# Install Jenkins

sudo apt-get install jenkins -y

echo "Jenkins installed successfully.."

#Install Docker

sudo apt-get update

#Install the below packages

sudo apt install gnupg2 pass -y

#Install docker

sudo apt install docker.io -y

#Add Ubuntu user to Docker group

sudo usermod -aG docker $USER

# start Docker

sudo systemctl start docker

sudo systemctl enable docker

sudo systemctl status docker

sudo usermod -a -G docker jenkins

sudo service jenkins restart

#Reload system daemon files

sudo systemctl daemon-reload

#Restart Docker service as well

sudo service docker stop

sudo service docker start

# Install AWS CLI

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

sudo apt install unzip

sudo unzip awscliv2.zip  

sudo ./aws/install

aws --version

#Install eksctl on Linux

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

#Move the extracted binary to /usr/local/bin. 

sudo mv /tmp/eksctl /usr/local/bin

eksctl version

# Install Kubectl

sudo curl --silent --location -o /usr/local/bin/kubectl https://s3.us-west-2.amazonaws.com/amazon-eks/1.22.6/2022-03-09/bin/linux/amd64/kubectl

sudo chmod +x /usr/local/bin/kubectl

kubectl version --short --client

# Install Helm

curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3

sudo chmod 700 get_helm.sh

sudo ./get_helm.sh

helm version --client

sudo su - jenkins

#Create EKS cluster using eksctl command

eksctl create cluster --name demo-eks --region us-east-2 --nodegroup-name my-nodes --node-type t3.small --managed --nodes 2 

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