02-jenkins-project.adoc

Jenkins Project

Meet Jenkins

Jenkins is an open source automation server which enables developers around the world to reliably build, test, and deploy their software.

What is Jenkins ?

• #1 Continuous Integration and Delivery server

• Created by Kohsuke Kawaguchi in 2006

  • Original project: "Hudson", renamed "Jenkins" in 2011

• An independent and active community (jenkins.io)

  • 500+ releases to date

  • 150,000+ active installations

  • 300,000+ Jenkins servers

  • 1,200+ plugins

Jenkins Popularity: Through the Roof

Source: RebelLabs Tools and Technologies Leaderboard 2016

Worldwide Adoption

Source: stats.jenkins.io

Jenkins in 2016

2016 was the year of Jenkins 2

Why Jenkins 2 ?

• Jenkins 1 is more than 12 years old

• Because Continuous Integration have changed…​

  • jenkins-ci.org !?

• slave ➞ agent

• "Fire and forget"

• "Modern Web":

  • jenkins.io

  • jenkins.io/docs

  • plugins.jenkins.io

Jenkins 2 Goals

• Target: CI → CD

• No breaking changes from Jenkins 1

  • Smooth upgrade

  • Plugins compatibility

• First time experience improvement

  • Brand new Wizard

• Pipeline-as-Code:

  • Jenkinsfile stored in SCM

  • Groovy DSL: "Code your Pipeline"

Jenkins in 2017 ?

Jenkins in 2017

• Declarative Pipeline

  • Still Jenkinsfile

  • Easier

  • Compatible with Scripted Pipeline

• BlueOcean

  • Brand new GUI

  • Written in ReactJS

  • Opinionated