Deploy NodeJS Apps with Jenkins CI/CD

Architecture of Project

Setup GitHub repository for source code and CI

GitHub repository used -> node-todo

Note : If you need detailed overview you can also view this Blog.

Setup Job on Jenkins for application

Create EC2 instance for Jenkins server
Update repository packages
Create Job,

Add basic script for testing,

pipeline{
    agent any;

    stages{
        stage("Code"){
            steps{
                echo "Source code fetched........."
            }
        }
        stage("Build"){
            steps{
                echo "Image created SUCCESS........."
            }
        }
        stage("Push"){
            steps{
                echo "Pushing to dockerhub........."
            }
        }
        stage("Deploy"){
            steps{
                echo "Deployement done........."
            }
        }
    }    
}

Setup security credentials in Jenkins

GitHub credentials

Go to, Dashboard -> Manage Jenkins -> Credentials -> System -> Global credentials -> Add Credentials

-> Go to Github.com and create Personal Access Token.

DockerHub Credentials

Go to, Dashboard -> Manage Jenkins -> Credentials -> System -> Global credentials -> Add Credentials

Setup GitHub WebHook

Go to repository -> Setting -> Webhook -> Add WebHook

Payload URL -: http://IP_of_Jenkins:8080/github-webhook/

Setup CI/CD pipeline

pipeline{
    agent any;

    stages{
        stage("Code"){
            steps{
                echo "Pulling source code from GitHub...."
                git url: "https://github.com/ojasjawale/node-todo-cicd.git/", branch: "master"
            }
        }
        stage("Build"){
            steps{
                echo "Image building started........."
                sh 'docker build -t node-app:v1 .'
                echo "Image Build SUCCESS............"
            }
        }
        stage("Push"){
            steps{
                withCredentials([usernamePassword(credentialsId: 'dockerhub-cred', passwordVariable: 'DOCKER_PASS', usernameVariable: 'DOCKER_USER')]) {
                sh 'docker login -u ${DOCKER_USER} -p ${DOCKER_PASS}'
                sh 'docker image tag node-app:v1 ${DOCKER_USER}/node-app:v1'
                sh 'docker push ${DOCKER_USER}/node-app:v1'
                echo "Image pushed to DockerHub successfully......."
                }
            }
        }
        stage("Deploy"){
            steps{
                echo "Deployement In-progress........."
                sh 'docker stop node-app && docker rm node-app'
                sh 'docker run --name node-app -p 8000:8000 ojasjawale/node-app:v1'
                echo "Deployement SUCCESS........."
            }
        }
    }  
}