CI/CD Pipeline

 

GitHub CI/CD Pipeline

Overview

• It stands for Continuous integration and Continuous Deployment or Delivery.
• Mostly focus on SDLC Development, Testing, Deployment.
• It will get high value once the automation enters into the field.

What is CI/CD Pipeline?

• Pipeline is a software develop process that also know as CI/CD.
• Automate this process will get main objective of this process that is minimize human error and consistent software release.
• The pipeline contain,
  • compiling the code,
  • unit test,
  • analyze the code,
  • security,
  • binaries creation.
• If we containerize the pipeline we also include packaging the code into a container image.

Creating first pipeline

• Need to create the files name with .github inside this folder workflows.
  • So git will automatically read all the configurations.

Configuration file

First we need to name the pipeline.

 ✨ name: name the pipeline

Triggering the pipeline is the next step.

on: # This is trigger the pipeline command
  push: *#  once push the code to git pipeline will trigger.*
    branches: *# which branch to trigger.* 
     - main

Jobs

Pipeline have tons of job to do once the pipeline is up and running.

• Like Building, Testing, Running.

jobs:
  build-deploy:
    name: Build and Deploy Spring Boot
# Once the pipeline is triggerd ot need to run on one machin
# SO to define this command is used. runs-on
    runs-on: ubuntu-latest

Steps

Step by step jobs will executed.

common syntax look like this

steps:
      - name: Name
        uses: actions

• Copying the codes to the github actions.

  • actions/checkout@v3.

• Setup JDK to run the java codes.

  • actions/setup-java@v3.

uses: actions/setup-java@v3
with: 
  distribution: 'corretto'
   java-version: 17

• Testing the application. [ using github actions instead commands will help to do the test].
  • using maven commands test the application.

  • run : mvn -B test --file pom.xml

  • It will do the test using pom.xml file.

Containerize Pipeline

In order to do this first make the application in jar format using same maven commands.

 run: |  #This will help to run more than one command in a line.
		mvn clean  
		mvn -B package --file pom.xml

• Now Build the Docker image using Actions.

• uses: docker/build-push-action@v4

uses: docker/build-push-action@v4
        with:
          context: # Dockerfile Location
          dockerfile: Dockerfile
          push: false # after Building the image it'll true
          tags: username/repo:tag # From Docker

• Now Logging into the hub.
• First we need to create the docker secret key from the hub.

uses: docker/login-action@v2
        with:
          username: ${{secrets.DOCKER_HUB_USERNAME}}
          password: ${{secrets.DOCKER_HUB_ACCESS_TOKEN}}

Paste the Docker secret key and the user name in github actions secrets.

username: ${{secrets.DOCKER_HUB_USERNAME}} password: ${{secrets.DOCKER_HUB_ACCESS_TOKEN}}.

• Push : Pushing the image.

uses: docker/build-push-action@v4
        with:
          context: # Dockerfile Location
          dockerfile: Dockerfile
          push: true
          tags: username/repo:tag # From Docker

Now it will up to the hub and can sharable to any one.

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