DevOps Classroom Series – 27/Jul/2021

Pipeline Execution Flows

• Declarative pipeline
  • basic structure

  pipeline {
      agent { label 'GOL' }
      stages {
          stage('SCM'){
              //step
          }
      }
      post {
          success {
  
          }
          failure {
  
          }
      }
  }
  

• For all the steps Refer Here
• Refer Here for the basic declarative pipeline to build game of life
• To the jenkinsfile we can add build triggers by using the triggers section Refer Here. The Jenkinsfile will be as shown below

pipeline {
    agent { label 'GOL'}
    triggers {
        cron('H * * * *')
        pollSCM('* * * * *')
    }
    stages {
        stage('scm') {
            steps {

                git branch: 'master', url: 'https://github.com/asquarezone/game-of-life.git'
            }
        }
        stage('build') {
            steps {
                sh 'mvn package'
            }
        }
    }
    post {
        success {
            archive '**/gameoflife.war'
            junit '**/TEST-*.xml'
        }
        
    }
}

• Adding manual inputs from user during build Refer Here

Parameters in Jenkins

• A Parameter is use to store a value in variable which can be used in the later build steps.
• Lets create a simple parameter in the Jenkins Freestyle project
• Parameters can be created from jenkins pipelines as well Refer Here
• Refer Here for the parameters added in jenkins pipeline.
• Declarative Pipeline structure