Unlocking CI/CD In AWS

Build & Automate With AWS

Learning Outcome

5

 Understand how CodePipeline automates the complete CI/CD workflow

4

Understand how CodeDeploy deploys applications to servers

3

Explain how CodeBuild builds applications automatically

2

Identify important AWS CI/CD services like AWS CodeBuild, AWS CodeDeploy, and AWS CodePipeline

Explain what a Dockerfile is

1

Understand the concept of CI/CD in AWS and why it is used

Earlier, we learned that

 Analogy

Imagine an Online Shopping Company

The company processes thousands of orders every day

Instead of handling each order manually, they use an automated system

In this system:

One system receives the order

Another checks and prepares the product

Another packs it

Another ships it to the customer

This automation makes the process:

Faster

Accurate

Consistent

What is AWS CI/CD

CI/CD stands for:

Continuous Integration (CI)

Developers regularly merge code into a shared repository

Continuous Delivery / Continuous Deployment (CD)

Applications are automatically tested and deployed

Why CI/CD is Needed

CI/CD helps organizations achieve:

Faster software delivery

Reduced manual work

Consistent deployments

Quick bug fixes and updates

Better collaboration among developers

Services in AWS CI/CD

AWS provides several services for CI/CD workflows

Main services include:

  • AWS CodeCommit – Source code repository
  • AWS CodeBuild – Builds and tests code

  • AWS CodeDeploy – Deploys applications

  • AWS CodePipeline – Automates the pipeline

Together, these services create an automated software delivery pipeline

AWS CodeCommit

What is CodeCommit

AWS CodeCommit is a fully managed source control service.It allows developers to store and manage source code securely in AWS

Key features

Private Git repositories

Secure access using IAM

Scalable and fully managed by AWS

CodeCommit works similarly to GitHub or GitLab, but inside the AWS ecosystem

AWS CodeBuild

What is CodeBuild

AWS CodeBuild is a fully managed build service

It automatically:

Compiles source code

Runs tests

Generates build artifacts

Developers do not need to manage build servers

How CodeBuild Works

Basic workflow:

Source code stored in GitHub or CodeCommit

CodeBuild pulls the source code

CodeBuild runs build instructions

Application is compiled and tested

Build artifacts are generated and stored

Key Components of CodeBuild

Main components include:

  • Build Project – Configuration of the build process
  • Build Environment – Operating system and runtime environment​​
  • Buildspec File – Defines build commands
  • Artifacts – Output files created after the build

 buildspec.yml File

What is buildspec.yml

buildspec.yml is a configuration file used by AWS CodeBuild

It defines the commands and steps required to build the application

Example structure:

version: 0.2

phases:
 install:
   commands:
     - echo Installing dependencies
 build:
   commands:
     - echo Building application

artifacts:
 files:
   - '**/*'

The file tells CodeBuild:

What commands to run

How to build the application

Which artifacts to generate

AWS CodeDeploy

What is CodeDeploy

AWS CodeDeploy automatically deploys applications to computing services

Supported platforms:

Amazon EC2 instances

On-premises servers

AWS Lambda

Amazon ECS containers

How CodeDeploy Works

Basic deployment process:

Application files stored in S3 or GitHub

CodeDeploy receives deployment request

CodeDeploy installs the application on target servers

Application updates with minimal downtime

appspec.yml File

What is appspec.yml

appspec.yml is a configuration file used by AWS CodeDeploy

It defines how the application should be deployed on the server

Example structure:

version: 0.0
os: linux

files:
 - source: /
   destination: /var/www/html

hooks:
 ApplicationStart:
   - location: scripts/start_server.sh

The file specifies

Where application files should be copied

What scripts should run during deployment

Deployment lifecycle events

Types of Deployment

In-Place Deployment

  • Application updated on the same server

  • Old version replaced with new version

Blue/Green Deployment

  • New environment created for new version
  • Traffic switches from old environment to new environment

This reduces downtime and deployment risk

AWS CodePipeline

What is CodePipeline

AWS CodePipeline automates the entire CI/CD workflow

Pipeline stages include

Source

Build

Test

Deploy

 How CodePipeline Works

Pipeline workflow:

Source Stage

Code pulled from GitHub or CodeCommit

Build Stage

CodeBuild compiles and tests the code

Deploy Stage

CodeDeploy deploys the application

Each stage runs automatically when code changes occur

Benefits of CodePipeline

Benefits include:

Automated deployment workflow

Faster software delivery

Easy integration with AWS services

Reduced manual errors

 Introduction to GitHub

Summary

4

Security and version control features in CodeArtifact

3

How AWS CodeArtifact manages software packages

2

What EC2 Image Builder is , How automated image creation , workSteps to create an Image Builder pipeline

1

How AWS transforms application deployment using DevOps tools

Quiz

Which AWS service is used to automatically create and manage machine images?

A. AWS CodeBuild

B. AWS CodePipeline

C. EC2 Image Builder

D. AWS CodeArtifact

Quiz-Answer

Which AWS service is used to automatically create and manage machine images?

A. AWS CodeBuild

B. AWS CodePipeline

C. EC2 Image Builder

D. AWS CodeArtifact

Which command is used to upload a Docker image to Docker Hub?

A. docker build

B. docker run

C. docker push

D. docker create