itzrahulyadav/Devops_in_AWS

A complete CI-CD pipeline in AWS

1. Codecommit

Get the source code

• Create a repo in codecommit and provide codecommitsuperuseraccess role
• push all your files in codecommit

2. CodeBuild

Build your code just like jenkins

• It needs buildspec file
• Create a buildspec file
• example of buildspec file

version: 0.2

phases:
  install:
    commands:
      - echo installing NGINX
      - sudo apt-get update
      - sudo apt-get install nginx -y
  build:
    commands:
      - echo build started on 'date'
      - cp index.html /var/www/html/
  post_build:
    commands:
      - echo Configuring nginx

artifacts:
  files:
    - '**/*'

3. Upload artifacts

• you can use artifacts stage to upload artifacts
• create a s3 bucket and provide the name of the bucket and the folder name
• refer the image below for reference

4. Codedeploy stage

• Create an ec2 instance (remember the name of the instance as it will be needed in deployment group)

• make sure to give ec2 permission/iam role for codedeploy

• the role should have following policies attached

• use ubuntu for ami

• install codedeploy agent

• steps to install codedeploy-agent

sudo yum update -y
sudo yum install ruby 
sudo yum install wget
wget https://bucket-name.s3.region-identifier.amazonaws.com/latest/install
# replace bucket-name with aws-codedeploy-ap-south-1 and region-identifier with ap-south-1
# the code for ap-south-1 region will be
# wget https://aws-codedeploy-ap-south-1.s3.ap-south-1.amazonaws.com/latest/install
chmod +x ./install
sudo ./install auto
sudo service codedeploy-agent status

• This stage uses appspec.yml file
• create a file like the example given below
• appspec.yml file

version: 0.0
os: linux
files:
    - source: /
      destination: /var/www/html
hooks:
  AfterInstall:
    - location: scripts/install_nginx.sh
      timeout: 300
      runas: root
  ApplicationStart:
    - location: scripts/start_nginx.sh
      timeout: 300
      runas: root

• in the script folder these are the following files
• install_nginx.sh

#!/bin/bash

sudo apt-get update
sudo apt-get install nginx -y

• start_nginx.sh

sudo service nginx start

• Create a codedeployment group
• Give the permission by creating the following role

CodeDeploy using ECS

• Create a cluster
• Give name to the container
• Provide the repository detail.
• Make sure the artifacts are set to buildartifact.
• In the image definitions file in the name provide the value of the container that you created and in the imageUri give the name of the docker repository image name.