Jenkins 2 Overview

Jenkins is an open source automation server with an unparalleled plugin ecosystem to support practically every tool as part of your delivery pipelines. Whether your goal is continuous integration, continuous delivery or something else entirely, Jenkins can help automate it.

Jenkins 2 brings Pipeline as code, a new setup experience and other UI improvements all while maintaining total backwards compatibility with existing Jenkins installations.

Highlights of Jenkins 2:

Problem

As organizations of all types seek to deliver high quality software faster, their use of Jenkins is extending beyond just continuous integration (CI) to continuous delivery (CD). In order to implement continuous delivery, teams need a flexible way to model, orchestrate and visualize their entire delivery pipeline.

Solution

Jenkins 2 supports delivery pipelines as a first-class entity. The Pipeline plugin introduces a domain-specific language (DSL) that helps Jenkins users to model their software delivery pipelines as code, which can be checked in and version-controlled along with the rest of their project's source code.

The expressive domain-specific language makes it easier and faster to create a simple "build, test and deploy" pipeline or build advanced pipelines. The end result is improved productivity for teams. Learn more about the Pipeline plugin.

Key Features and Benefits of Pipelines

Pipeline as Code

Easily define simple and complex pipelines through the DSL in a Jenkinsfile .

. Pipeline as code provides a common language to help teams (e.g. Dev and Ops) work together.

Easily share pipelines between teams by storing common "steps" in shared repositories.

Pipeline Stage View

A new interface makes it easy to visualize the progress across an entire pipeline.

Durable

Pipelines are long-lasting and can survive infrastructure outages.

Built-in support for Git, GitHub branches

Each feature branch can define its own delivery pipeline, which Jenkins can detect, automatically managing Pipelines when branches are created or deleted.

Problem

The abundant plugin ecosystem means that new Jenkins users must navigate through long lists of plugins to find the most suitable plugins to match their needs. Without any "batteries included" to address the most common needs, getting started with Jenkins can be an intimidating experience.

Solution

For new users, Jenkins 2 starts up with suggested plugins to get them started with the right set of tools to use Jenkins effectively from day one.

There are a number of user interface improvements, such as the improved job configuration page, to make configuring jobs easier.

Key Features and Benefits of Improved Usability

New "Getting Started" experience

Start with a set of suggested plugins that match the most common needs.

Redesigned "Create Item" page

The "Create Item" page has been redesigned to include icons for job types. Once you have a larger number of item types to choose from, the page will group item types by category.

New Job Configuration page

Tabs at the top of the job configuration page let you quickly jump to various sections on the form. The redesigned form elements make it easy to tell which options are related.

Jenkins 2 is a drop-in replacement of the Jenkins 1.x series of releases and fully backward compatible. There is practically no reason not to upgrade!

Jenkins 2 now requires Servlet 3.1 to run. If you're not using the embedded Winstone-Jetty, make sure your container supports Servlet 3.1 (e.g. Tomcat 8) before upgrading.

Jenkins 2 no longer supports AJP with the embedded Winstone-Jetty container, so if you're using Jenkins with a reverse proxy, please make sure it uses HTTP before upgrading.

Give us feedback!

We're very interested in your feedback on what you think of Jenkins 2.