Jenkins-Docker-Ansible

A simple DevOps Project (CI/CD) with Jenkins, Docker, and Ansible.

BluePrint

Workflow Description

1. Developer Pushes Code:

   • Developers push their code changes to a Git repository.

2. Jenkins Pulls Code:

   • Jenkins is configured to pull the latest code from the Git repository whenever a change is detected.

3. Jenkins Builds Docker Image:

   • Jenkins builds a Docker image from the pulled code.

4. Push Docker Image:

   • The Docker image is pushed to a Docker registry for storage and further use.

5. Ansible Deployment:

   • Ansible pulls the Docker image from the registry and deploys it to the development environment.
   • Ansible can also push the image to other environments (e.g., staging, production).

Prerequisites

• Jenkins: Ensure Jenkins is installed and running.
• Docker: Ensure Docker is installed and running.
• Ansible: Ensure Ansible is installed and configured.
• Git: Ensure Git is installed and your repository is set up.

Setup Instructions

Jenkins Setup

1. Install Required Plugins:

   • Docker Pipeline Plugin
   • Git Plugin
   • Ansible Plugin

2. Configure Jenkins Pipeline:

   • Create a new pipeline job in Jenkins.
   • Add your Git repository URL.
   • Write a Jenkinsfile in your repository to define the build, push, and deployment steps.

Docker Setup

1. Dockerfile:
   • Please make sure you have a Dockerfile in your repository that Jenkins will use to build the Docker image.

Ansible Setup

1. Inventory and Playbook:
   • Create an inventory file listing your target servers.
   • Write an Ansible playbook to handle the deployment of the Docker image.

Example Jenkinsfile

pipeline {
  agent any

  stages {
    stage('building image') {
      steps {
        sh 'docker image build -t $JOB_NAME:v1.$BUILD_ID .'
        sh 'docker image tag $JOB_NAME:v1.$BUILD_ID alilotfi/$JOB_NAME:latest'
      }
    }

    stage('Ansible version') {
      steps {
        script {
          
          sh 'ansible --version'

        }
      }
    }

    stage('Ansible Deploy') {

      steps {

        sh 'ansible-playbook -i /etc/ansible/hosts -u ubuntu /var/lib/jenkins/workspace/jenkins-docker-ansible/ansible/play.yml'

      }
    }
  }
}

Running the Pipeline

1. Trigger the Pipeline:

   • Push code changes to your Git repository.
   • Jenkins will automatically trigger the pipeline.

2. Monitor the Pipeline:

   • Monitor the pipeline's progress in the Jenkins dashboard.
   • Ensure each stage is completed successfully.

Conclusion

This setup provides a straightforward CI/CD pipeline leveraging Jenkins, Docker, and Ansible to automate code integration, build, and deployment processes. Customize the provided examples to fit your specific project needs.