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Through continuous integration, various stages of DevOps can be integrated. Jenkins is a tool that can be used to integrate these stages of DevOps, it is quite popular these days. This Jenkins Tutorial step by step guide will cover the introduction part and some other details like features or benefits of using Jenkins. Jenkins was only an open-source continuous integration tool at the time of its launch but now after version update of Jenkins, it has become continuous integration and a continuous delivery tool that can organize the application deployment phase too. The objective of this Jenkins guide for beginners is to cover maximum facts about the tool and how it supports the continuous integration or continuous deployment for various IT projects.
Let's start with an introduction to one of the most popular DevOps tools that are popular as Jenkins. Jenkins wiki is an open-source tool that has many plug-ins and it is written in Java. The Jenkins wiki tool was launched to build and test software projects in an easy way.
Developers can easily integrate application changes with this tool to help the user to obtain a fresh build. The software can be tested and delivered continuously with the help of various integration and deployment technologies.
Through automation, software developers can accelerate the process of software development. Jenkins mainly integrates all the stages of the software development lifecycle that are documentation, packaging, testing, deployment, static analysis, and other ones.
Jenkins plugins help the developers in providing continuous integration and various stages can be integrated through Jenkins. To integrate any specific tool like Git, Amazon EC2, Manen 2 project, HTML publisher, etc. you can download the appropriate plugin and integrate the tool. It is a basically advantageous tool and the reason for the advantages of Jenkins is:
So far, we have discussed that Jenkins is a continuous integration tool, now let's take a quick look at this most used DevOps concept. In the case of continuous integration, there is a shared repository in which developers can perform multiple changes even throughout the day and save them right there. As soon as the changes are committed, it gets stored in the repository and the team can easily detect if they found any problem due to that change.
Apart from the changes, there are several other operations like deployment of the application, testing it on the server, and providing it to the relevant teams after building and testing the results. All these steps can be performed as and when required by the DevOps team easily in a quick manner.
There are several continuous integration tools in the market that makes the DevOps task easier and efficient. For the following metrics Jenkins is considered as best of them:
Jenkins is a highly demanded tool globally and it can provide continuous integration just due to the availability of various plugins for several tools.
In the case of the software development lifecycle, the application has to be built and deployed on the test server for the testing purpose by the team members. It is quite a popular and easy looking process for application development, but at the same time, this process has several flaws that need to be resolved. The so-called and mostly noticed flaws are like:
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In short, we can say that as a result not only the delivery process gets slow but even the quality of the application can also be degraded due to all of these reasons. As a result, customer dissatisfaction may result. So, a platform that can overcome all of such shortcomings of the process as required by the developers that can provide the facility of continuous development and testing of the application, so that every change made to the source code can be triggered and altered. This process is known as CI and Jenkin tool is the one that can provide all of such CI features.
Let's see how Jenkins helps the developers and testers? Following diagram shows the continuous integration with Jenkins:
Above diagram shows the complete process of continuous integration that takes place in Jenkins:
Now as we have understood working of Jenkins now let’s see what changes it has made from the earlier way of releasing and deploying an application. In the following scenario that is for before and after Jenkins:
For a distributed environment, Jenkins uses master-slave architecture to manage the builds. Here TCP/IP protocol is used to manage communication between master and slave units. Jenkins master and slave have the following responsibilities:
Main Jenkin server is the master that has the following responsibilities:
Jenkin Slave is a Java executable instance that is basically a remote machine. Jenkin slave has the following characteristics:
Jenkin is a continuous integration tool provides following features for the application deployment:
Through a DSL Jenkins has introduced a version builder that can help you to build, test and deploy various code pipelines. These pipeline scripts are easy to write, manage and execute. Parallel builds can be executed through these pipelines. You must have control over how and what you are going to build.
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As Jenkins provide better UI/UX so that user can easily visualize the flow and can easily configure passwords as and when required. You can also get a great view of Jenkin pipelines. Visual editor can be used to check and view these pipelines. The plugins are more safe and secure as well.
Let us understand the Jenkins architecture with the help of an example. In the following diagram, there is one master and three Jenkins slaves. Let us see how they are connected.
Moving ahead, let us see how you can use Jenkins for testing in different environments like Ubuntu, Windows, or MAC, etc. The following diagram represents the same.
The following things are taken care of in the given diagram:
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Jenkins pipelines are used to check which task is executing currently. Usually, multiple changes are made by different developers and it is necessary to know which changes have been tested and which changes are in the queue. There are three options available when building a project using Jenkins. These are:
Jenkins can be installed at both Unix and the Windows platform. Here, we will focus on the installation of Jenkins on Windows.
Read: What Should You Know About Azure Devops?
Prerequisites:
Before you start with the Jenkins installation, there are some prerequisites to follow for the tool in your system.
The following steps can help you to download Jenkins successfully.
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DevOps has made the software development and deployment process quicker and easier, but for this, you may need certain tools. Jenkins is one of the most used DevOps tools that can ease the operations by providing multiple plugins and an effective interface. Better UI tools like Jenkins are there to make the DevOps process easier. As it is an open-source tool so it can be used by anyone.
This Jenkins Tutorial For beginners presents a sound idea of the tool and how it can be used by industries for CI/CD. Also, you can create your first project using this Jenkins Tutorial step by step guide. To know more about DevOps and the related tools, you should join the DevOps certification program at JanBask Training and explore your learning with the brightest minds.
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