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What is Jenkins?

by Suvarna
What is Jenkins

Jenkins is a free software constant integration server that can coordinate a series of actions that allow the normal (and not only) integration process to be achieved automatically. Jenkins is free and completely formulated in Java. Jenkins can be an application widely spread around the world. About 300,000 installations are growing every day.

It is a server-based application and requires an internet server like Apache Tomcat. The rationale Jenkins became so popular is that of its monitoring of repeated tasks that arise during the event of a project. As an example, if your company is developing a project, Jenkins will continuously examine your project models and show you the mistakes within the early stages of your development.

You can learn it online with 3RI Technologies and also can join DevOps Online training. Jenkins supports the entire software development life cycle, from software creation, testing, documentation, development, and other stages of the software development lifecycle.

What is Continuous Integration?

 In Continuous Integration, once a code commits, the software package is made and tested now. in associate passing giant projects with several developers, commits are revamped and over throughout the day. With every commit, code is formed and tested. If the take a look at is triple-crown, the build is checked for readying. If the readying might be successful, the code is pushed to production. This commit, build, test, and deploy is also an eternal method and therefore the name continuous integration/deployment.

A Continuous Integration Pipeline could be a powerful instrument that consists of a group of tools designed to host, monitor, compile and test code, or code changes, like:

  • Source Control Tool
  • Continuous Integration Server
  • Build tool
  • Automation testing framework

Jenkin History

 Kohsuke Kawaguchi, a Java developer, working at SUN Microsystems, was uninterested in building the code and fixing errors repetitively. In 2004, designed a self-regulation server known as Hudson that automates model and check tasks. In 2011, Oracle who owned Sun Microsystems had a dispute with Hudson’s open source community, so that they forked Hudson and renamed it as Jenkins.

Both Hudson and Jenkins continued to control independently. But in an exceedingly short period, Jenkins acquired lots of projects and contributors while Hudson remained with only 32 projects. With time, Jenkins became more popular, and Hudson isn’t maintained anymore. Why use Continuous Integration with Jenkins?

Some people might think that the old-fashioned way of developing the software is that the better way. Let’s understand the benefits of CI with Jenkins with the subsequent example Let us imagine, that there are around 10 developers who are engaged on a shared repository. Some developer performs their task in 25 days while others take 30 days to complete

Jenkins Plugins 

By default, Jenkins comes with a short set of features. If you would like to integrate your Jenkins connection with version control tools like Git, then you wish to put in plugins associated with Git. In fact, for integration with tools like Maven, Amazon EC2, you would like to put in respective plugins in your Jenkins.

Advantages of using Jenkins

 Jenkins is being managed by a very open community. monthly, they hold public conferences and take inputs from the final public for the event of the Jenkins project. So far, around 280 tickets are closed and also the project releases a stable version every 3 months.

As technology evolves, thus will Jenkins. So far, Jenkins has revealed around 320 plugins in its plugin information. With plugins, Jenkins becomes even additional powerful and have wealthy. Jenkins additionally supports the cloud design in deploying Jenkins on cloud platforms.

The reason Jenkins became well-liked is as a result of it absolutely was created by a developer for developers.

Disadvantages of using Jenkins

Though Jenkins could also be a really powerful tool, it’s its flaws. The computer program is superannuated and not terribly easy compared to current computer program trends. Though Jenkins is fair-haired by several developers, it’s not that simple to require care of it as a result of Jenkins runs on a server and needs some skills as a server administrator to watch its activity. One of the reasons, why several folks do not implement Jenkins, is because of its problem in putting in and configuring Jenkins.

Continuous integrations frequently break because of some tiny setting changes. Continuous integration goes to be paused then needs some developer attention.


  • In Continuous Integration, after a code commit, the software is made and tested immediately.
  • Jenkins is an open-source Continuous Integration server capable of orchestrating a sequence of actions.
  • Before Jenkins when all Developers had completed their assigned coding tasks, they want to commit their code all at the identical time. Later, Build is tested and deployed.
  • After Jenkins, the code is constructed and test as soon because the Developer commits the code. Jenkins will build and test code repeatedly during the day.
  • By default, Jenkins comes with a limited set of features. If you would like to integrate your Jenkins installation with version control tools like Git, then you wish to put in plugins associated with Git.
  • The biggest pros of Jenkins is that it’s managed by the community which holds public meetings and takes inputs from the general public for the event of Jenkins projects.
  • The biggest con of Jenkins is that Its interface is outdated and not user-friendly compared to current UI trends.


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