![](https://www.devopsschool.com/blog/wp-content/uploads/2020/05/what-is-jenkins.jpg)
What is jenkins?
- Web Based tool to automate manual steps for any repetitive SDLC daily tasks.
- Continuous integration tool
- Continuous delivery tool
- Jenkins can integrate with any available tools with a help of plugins
- Jenkins jobs/projects run can be scheduled conditionally
- Each fearure of plugins powered/extended with plugins
- Jenkins has 300+ plugins to extend a jenkins fearure
- Jenkins has 4 variant of release or major versions.
— Jenkins Commuunity
— Jenkins Enterprise by CloudBees
— Jenkins X
— Jenkins Blue Ocean - Current release is 2.X
- Jenkins is Written in Java so this can be installed in any OS.
- Jenkins old name is hudson
- Jenkins is popular for creating CI/CD pipeline using code(jenkinsfile).
![](https://www.devopsschool.com/blog/wp-content/uploads/2020/05/jenkins-integrations.jpg)
What is continuous integration?
- Automated Build with immediate feedback
- Auto Testing with immediate feedback
Details short version of continuous integration?
- Automated Code Review with immediate feedback
- Automated Build with immediate feedback
- Automated Unit testing with immediate feedback
- Automated Packaging with immediate feedback
- Automated Package archive with immediate feedback
- Automated Deployment to QA, UAT, Stageing env with immediate feedback
- Automated Acceptance Testing with immediate feedback
- Automated Code Coverage with immediate feedback
![](https://www.devopsschool.com/blog/wp-content/uploads/2020/05/ci-using-jenkins.jpg)
For achieving this, You need to integrate many tools such as following in Java Stack
- Automated Code Review with SonarQube
- Automated Build with Maven
- Automated Unit testing with Junit
- Automated Packaging with Jar
- Automated Package archive with Nexus
- Automated Deployment to QA, UAT, Staging env with Ansible
- Automated Acceptance Testing with Selenium
- Automated Code Coverage with Jacoco.
Thus, we need one tool which can be integrated with SonarQube, Maven, Junit, Jar, Nexus, Ansible, Selenium and Jacoco and the tool is Jenkins.
![](https://www.devopsschool.com/blog/wp-content/uploads/2020/05/jenkins-dashboard-view-1024x576.png)
![](https://www.devopsschool.com/blog/wp-content/uploads/2020/05/jenkins-blue-ocean-pipeline.png)
![loading](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/gallery-page-loader.gif)
![play](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/playhover.png)
Jenkins Fundamental Tutorial by Rajesh Kumar in 2021 – Session-1
![play](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/playhover.png)
Jenkins Fundamental Tutorial by Rajesh Kumar in 2021 – Session-2
![play](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/playhover.png)
Jenkins Fundamental Tutorial by Rajesh Kumar in 2021 – Session-2
![play](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/playhover.png)
Jenkins Fundamental Tutorial by Rajesh Kumar in 2021 – Session-3
![play](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/playhover.png)
Jenkins Fundamental Tutorial by Rajesh Kumar in 2021 – Session-4
![loading](https://www.devopsschool.com/blog/wp-content/plugins/youtube-embed-plus/images/gallery-page-loader.gif)
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