simple-devops-project-1

Simple DevOps Project 1

In this project we are creating Jenkins CI CD of git > github > jenkins > maven to build war file > deploy to tomcat 8 server with deploy to container plugin.

Prerequisites

• EC2 instance with tomcat 8 installed
• Jenkins with Maven Server
• Deploy to container plugin installed
• Setup Tomcat Credentials

Installation of Deploy to container plugin

• Manage Jenkins > Jenkins Plugins > available > deploy to container

Setup credentials of Tomcat

To deploy our build artifacts on tomcat server our Jenkins server need access. For that we should setup credentials. This option is available in Jenkins Dashboard.

• Manage Jenkins > Manage Credentials > Under Stores scoped to Jenkins on the right, click on Jenkins> Under System, click the Global credentials (unrestricted) link to access this default domain > Click Add Credentials on the left. >
  • From the Kind field choose Username and password
  • Username : deploy
  • Password : XXXXXXX
  • id : Tomcat_user
  • Description: Tomcat user to deploy on tomcat server

Steps to create Jenkin job

• Login to Jenkins console
• Create Jenkins job, Fill the following details,
  • Enter Item name: Simple Devops Project 1
    • Maven Project
  • Source Code Management:
    • Repository: https://github.com/maheshkn400/hello-world.git
    • Branches to build : */master`
  • Build:
    • Root POM:pom.xml
    • Goals and options : clean install package
  • Post Steps
    • Deploy war/ear to container
      • WAR/EAR files : **/*.war
      • Containers : Tomcat 8.x
        • Credentials: Tomcat_user # (which created in above step)
        • Tomcat URL : http://<PRIVATE_IP>:<PORT_NO>

Save and run the job now.

Continuous Integration & Continuous Deployment (CI/CD)

Now job is running fine but to make this as Continuous Integration and Continuous Deployment To do that go back and modify job as below.

• Build Triggers
  • Poll SCM
    • schedule */2 * * * *

Save the job and modify the code in GitHub. Then you could see your job get trigger a build without any manual intervention.

⚠️ Important - For lab we done "Build Triggers" schedule every 2 min to trigger but in real time it is not recommended. It depends upon the appliation and client requirement. We will schedule it every night in non-production time or week ends or some projects it will set when any code commit / change in repository (master branch).

I'm Happy To Get Suggestions 😄