title
What Is Jenkins? | What Is Jenkins And How It Works? | Jenkins Tutorial For Beginners | Simplilearn
description
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This Jenkins tutorial will help you understand what is Jenkins, issues before Jenkins came in, what is continuous integration, features of Jenkins, Jenkins architecture, and you will also see a case study using Jenkins. Jenkins is a continuous integration tool that allows continuous development, test and deployment of newly created codes. Jenkins is primarily a build and release tool, it was written originally by the community as a build and release tool. They did not target it as a continuous integration, continuous deployment or an orchestration tool, it was simply used for releasing builds to production but now Jenkins has a lot of other uses like it's a continuous integration tool. It allows developers to make sure that their environments have the exact same code as their code repositories. Now let us get started and understand how Jenkins is being used in DevOps.
Below topics are explained in this Jenkins tutorial:
1. Before Jenkins ( 00:46 )
2. Issues before Jenkins
3. What is Jenkins? ( 02:17 )
4. What is continuous integration? ( 04:10 )
5. Continuous integration tools ( 05:45 )
6. Features of Jenkins ( 08:43 )
7. Jenkins pipeline ( 10:50 )
8. Jenkins architecture ( 12:52 )
9. Jenkins case study ( 14:43 )
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{'title': 'What Is Jenkins? | What Is Jenkins And How It Works? | Jenkins Tutorial For Beginners | Simplilearn', 'heatmap': [{'end': 340.828, 'start': 314.987, 'weight': 1}], 'summary': 'This tutorial on jenkins covers its significance in devops, continuous integration, and automotive software development, emphasizing its role in improving continuous integration environments, enabling continuous development and testing, and reducing project delays, with a focus on automation and essential features. it also showcases a case study of a company utilizing jenkins and highlights its pivotal role in devops, exemplified by etsy releasing up to 50 versions daily, and bosch streamlining automotive software using cloudbees jenkins, reducing build process time from 3 days to less than 3 hours.', 'chapters': [{'end': 126.853, 'segs': [{'end': 64.937, 'src': 'embed', 'start': 22.663, 'weight': 0, 'content': [{'end': 31.329, 'text': "Then we'll get into what Jenkins is about and how it applies to continuous integration and the other continuous integration tools that you need in your DevOps team.", 'start': 22.663, 'duration': 8.666}, {'end': 37.45, 'text': "Then, specifically, we'll deep dive into features of Jenkins and the Jenkins architecture,", 'start': 31.829, 'duration': 5.621}, {'end': 46.252, 'text': "and we'll give you a case study of a company that's using Jenkins today to actually transform how their IT organization is operating.", 'start': 37.45, 'duration': 8.802}, {'end': 49.913, 'text': "So let's talk a little bit about life before Jenkins.", 'start': 46.772, 'duration': 3.141}, {'end': 51.673, 'text': "Let's see this scenario.", 'start': 50.533, 'duration': 1.14}, {'end': 54.174, 'text': "I think it's something that maybe all of you can relate to.", 'start': 51.693, 'duration': 2.481}, {'end': 60.336, 'text': 'As developers, we all write code and we all submit that code into a code repository,', 'start': 54.674, 'duration': 5.662}, {'end': 64.937, 'text': "and we all keep working away writing our unit tests and hopefully we're running our unit tests.", 'start': 60.336, 'duration': 4.601}], 'summary': 'Jenkins enables continuous integration, with a deep dive into its features and architecture, along with a case study of a company utilizing it to transform their it operations.', 'duration': 42.274, 'max_score': 22.663, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg22663.jpg'}], 'start': 3.37, 'title': 'Understanding jenkins for devops', 'summary': 'Explores the significance of jenkins in improving devops continuous integration environments, addressing issues with code integration, and reducing project delays by deep diving into its features, architecture, and a case study of a company utilizing jenkins.', 'chapters': [{'end': 126.853, 'start': 3.37, 'title': 'Understanding jenkins for devops', 'summary': 'Explores the significance of jenkins in improving devops continuous integration 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"It explains Jenkins' features and architecture, emphasizing its role in continuous integration.", 'A case study of a company using Jenkins showcases its effectiveness in reducing project delays.']}, {'end': 567.007, 'segs': [{'end': 197.947, 'src': 'embed', 'start': 151.23, 'weight': 0, 'content': [{'end': 156.336, 'text': "where you'd have two developers sitting next to each other coding against the same piece of information.", 'start': 151.23, 'duration': 5.106}, {'end': 165.041, 'text': 'What they were able to do is to continuously develop their code and test their code and move on to new sections of code.', 'start': 156.776, 'duration': 8.265}, {'end': 171.185, 'text': 'Jenkins is a product that allows you to expand on that capacity to your entire team.', 'start': 165.561, 'duration': 5.624}, {'end': 175.647, 'text': "So you're able to submit your codes consistently into a source code environment.", 'start': 171.625, 'duration': 4.022}, {'end': 179.269, 'text': 'So there are two ways in which you can do continuous delivery.', 'start': 176.388, 'duration': 2.881}, {'end': 183.592, 'text': 'One is through nightly builds and one is through continuous delivery.', 'start': 179.71, 'duration': 3.882}, {'end': 191.065, 'text': 'So the approach that you can look at continuous delivery is modifying the legacy approach to building out solutions.', 'start': 183.843, 'duration': 7.222}, {'end': 197.947, 'text': 'So what we used to do is we would wait for nightly builds and the way that our nightly builds would work and operate is that as co-developers,', 'start': 191.105, 'duration': 6.842}], 'summary': 'Jenkins enables continuous development and testing, facilitating consistent code submissions for the entire team, with two approaches: nightly builds and continuous delivery.', 'duration': 46.717, 'max_score': 151.23, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg151230.jpg'}, {'end': 301.236, 'src': 'embed', 'start': 267.862, 'weight': 1, 'content': [{'end': 276.608, 'text': 'And the goal of that continuous integration server is that it actually goes ahead and validates and passes any tests that a tester may have created.', 'start': 267.862, 'duration': 8.746}, {'end': 283.373, 'text': "Now, if on the continuous integration server a test isn't passed, then that code gets sent back to the developer.", 'start': 277.289, 'duration': 6.084}, {'end': 285.965, 'text': 'And the developer can then make the changes.', 'start': 283.803, 'duration': 2.162}, {'end': 288.987, 'text': 'It allows the developer to actually do a couple of things.', 'start': 286.225, 'duration': 2.762}, {'end': 301.236, 'text': "It allows the developer not to break the build and we all don't want to break the builds that are being created but it also allows the developer not to actually have to run all of the tests locally on their computer.", 'start': 289.067, 'duration': 12.169}], 'summary': 'Continuous integration server validates tests, preventing broken builds and reducing local test runs.', 'duration': 33.374, 'max_score': 267.862, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg267862.jpg'}, {'end': 340.828, 'src': 'heatmap', 'start': 314.987, 'weight': 1, 'content': [{'end': 322.373, 'text': "What's also good is that if there are any code errors that have come up, that may be beyond just the standard CI test.", 'start': 314.987, 'duration': 7.386}, {'end': 323.854, 'text': "so maybe there's a code.", 'start': 322.373, 'duration': 1.481}, {'end': 326.516, 'text': "the way that you write your code isn't consistent.", 'start': 323.854, 'duration': 2.662}, {'end': 331.36, 'text': 'those errors can then be passed on easily from the tester back to the developer too.', 'start': 326.516, 'duration': 4.844}, {'end': 340.828, 'text': "The goal from doing all this testing is that you're able to release and deploy and your customer is able to get new code faster,", 'start': 331.88, 'duration': 8.948}], 'summary': 'Consistent code writing reduces errors, allowing faster code deployment.', 'duration': 25.841, 'max_score': 314.987, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg314987.jpg'}, {'end': 546.725, 'src': 'embed', 'start': 500.322, 'weight': 2, 'content': [{'end': 507.866, 'text': 'And so they created a hard fork of Hudson that they renamed Jenkins and Jenkins has now become that open source project.', 'start': 500.322, 'duration': 7.544}, {'end': 514.109, 'text': "It is one of the most popular and continuously contributed projects that's available as open source.", 'start': 508.046, 'duration': 6.063}, {'end': 517.131, 'text': "So you're always getting new features being added to it.", 'start': 514.308, 'duration': 2.823}, {'end': 521.433, 'text': "It's a tool that really becomes the center for your CI environment.", 'start': 517.15, 'duration': 4.283}, {'end': 526.649, 'text': "So let's jump into some of those really great features that are available in Jenkins.", 'start': 522.164, 'duration': 4.485}, {'end': 536.376, 'text': 'So Jenkins itself is really comprised of five key areas around easy installation, easy configuration, plugins, extensibility, and distribution.', 'start': 526.949, 'duration': 9.427}, {'end': 546.725, 'text': 'So, as I mentioned, for the easy installation, Jenkins is a self-contained Java program and that allows it to run on most popular operating systems,', 'start': 536.737, 'duration': 9.988}], 'summary': 'Jenkins, a popular open source project, offers easy installation and continuous contributions, becoming the center for ci environments.', 'duration': 46.403, 'max_score': 500.322, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg500322.jpg'}], 'start': 127.153, 'title': 'Jenkins and continuous integration', 'summary': "Delves into jenkins as a tool for continuous integration, enabling continuous development, testing, and code submission, with a focus on continuous delivery and nightly builds. it also discusses the benefits of continuous integration, emphasizing jenkins' key role in automation and its essential features.", 'chapters': [{'end': 217.57, 'start': 127.153, 'title': 'Jenkins for continuous integration', 'summary': 'Explores the concept of jenkins as a product for continuous integration, allowing teams to continuously develop, test, and submit code, with the option for continuous delivery and nightly builds.', 'duration': 90.417, 'highlights': ['Jenkins is a product that allows teams to continuously develop, test, and submit their code, expanding on the concept of continuous integration for the entire team.', 'Two ways for continuous delivery are through nightly builds and continuous delivery, with the former involving a legacy approach of waiting for nightly builds and running and testing all code at night.', 'The concept of continuous integration involves developers coding against the same piece of information, allowing them to continuously develop and test their code and move on to new sections of code.']}, {'end': 567.007, 'start': 218.11, 'title': 'Continuous integration and jenkins', 'summary': "Explains the concept of continuous integration, the benefits of using continuous integration tools like jenkins, and highlights key open source tools for continuous integration, emphasizing jenkins' central role in automation and its key features.", 'duration': 348.897, 'highlights': ['Continuous integration allows developers to continuously submit code to a server where it is validated and tested, preventing build breaks and improving productivity by offloading testing to a separate environment.', 'Jenkins is a central tool for automation, comprising easy installation, configuration, plugins, extensibility, and distribution, running on various operating systems and providing a user-friendly web interface for error checking and built-in help.', 'Bamboo is a continuous integration tool that runs multiple builds in parallel, accelerating compilation, especially useful for testing different software versions on multiple platforms.', 'BuildBot is an open source tool that automates the software build, test, and release process, supporting parallel execution jobs across multiple platforms and written in Python.', 'Apache Gump simplifies testing Java projects with API level and functionality level testing, making it easier to build and test Java projects.', 'Travis CI is a tool designed specifically for hosted GitHub projects, providing continuous integration for code stored in GitHub.', 'Hudson is the original version of Jenkins, which was acquired by Oracle, leading the team to create Jenkins as a hard fork, now a popular open source project with continuous contributions and a central role in CI environments.']}], 'duration': 439.854, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg127153.jpg', 'highlights': ['Jenkins is a product that allows teams to continuously develop, test, and submit their code, expanding on the concept of continuous integration for the entire team.', 'Continuous integration allows developers to continuously submit code to a server where it is validated and tested, preventing build breaks and improving productivity by offloading testing to a separate environment.', 'Jenkins is a central tool for automation, comprising easy installation, configuration, plugins, extensibility, and distribution, running on various operating systems and providing a user-friendly web interface for error checking and built-in help.', 'Two ways for continuous delivery are through nightly builds and continuous delivery, with the former involving a legacy approach of waiting for nightly builds and running and testing all code at night.', 'Hudson is the original version of Jenkins, which was acquired by Oracle, leading the team to create Jenkins as a hard fork, now a popular open source project with continuous contributions and a central role in CI environments.']}, {'end': 1190.356, 'segs': [{'end': 591.968, 'src': 'embed', 'start': 567.728, 'weight': 2, 'content': [{'end': 576.055, 'text': 'One of the things that makes tools like Jenkins really powerful for developers and continuous integration teams and your DevOps teams as a whole,', 'start': 567.728, 'duration': 8.327}, {'end': 582.2, 'text': 'when you have plugins that you can then add in to extend the base functionality of the product.', 'start': 576.055, 'duration': 6.145}, {'end': 591.968, 'text': 'Jenkins has hundreds of plugins and you can go and visit the update center and see which other plugins that would be good for your DevOps environment.', 'start': 582.46, 'duration': 9.508}], 'summary': 'Jenkins offers hundreds of plugins to extend its functionality for devops teams.', 'duration': 24.24, 'max_score': 567.728, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg567728.jpg'}, {'end': 785.504, 'src': 'embed', 'start': 755.182, 'weight': 0, 'content': [{'end': 762.207, 'text': 'As an example, companies like Etsy will release up to 50 different versions of their website every single day.', 'start': 755.182, 'duration': 7.025}, {'end': 771.914, 'text': "So let's talk about the architecture within Jenkins that allows you to be so effective at applying a continuous delivery DevOps environment.", 'start': 763.047, 'duration': 8.867}, {'end': 777.318, 'text': 'So the server architecture really is broken up into two sections.', 'start': 772.374, 'duration': 4.944}, {'end': 785.504, 'text': 'On the left hand side of the section you have the code the developers are doing and submitting that code to a source code repository.', 'start': 777.498, 'duration': 8.006}], 'summary': 'Etsy releases up to 50 website versions daily, jenkins enables effective continuous delivery architecture.', 'duration': 30.322, 'max_score': 755.182, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg755182.jpg'}, {'end': 946.231, 'src': 'embed', 'start': 916.838, 'weight': 3, 'content': [{'end': 924.922, 'text': 'and that master environment can then push out to multiple other Jenkins slave environments to distribute the workload.', 'start': 916.838, 'duration': 8.084}, {'end': 933.026, 'text': 'So it allows you to run multiple builds and tests and production environments simultaneously across your entire architecture.', 'start': 925.102, 'duration': 7.924}, {'end': 946.231, 'text': 'So Jenkins slaves can be running the different build versions of the code for different operating systems and the server master is controlling how each of those builds operate.', 'start': 933.266, 'duration': 12.965}], 'summary': 'Jenkins master can distribute workload to multiple slaves for simultaneous builds and tests.', 'duration': 29.393, 'max_score': 916.838, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg916838.jpg'}, {'end': 989.62, 'src': 'embed', 'start': 962.569, 'weight': 4, 'content': [{'end': 968.973, 'text': 'where manufacturers have shifted from creating complex hardware to actually creating software.', 'start': 962.569, 'duration': 6.404}, {'end': 975.896, 'text': "We've seen that with companies such as Tesla, where they are creating software to manage their cars.", 'start': 969.133, 'duration': 6.763}, {'end': 980.737, 'text': 'We see the same thing with companies such as General Motors with their OnStar program.', 'start': 976.116, 'duration': 4.621}, {'end': 989.62, 'text': 'And Ford just recently have rebranded themselves as a technology company rather than just an automotive company.', 'start': 981.178, 'duration': 8.442}], 'summary': "Manufacturers are shifting to software, e.g. tesla, gm's onstar, ford rebrands as tech company.", 'duration': 27.051, 'max_score': 962.569, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg962569.jpg'}, {'end': 1059.798, 'src': 'embed', 'start': 1035.071, 'weight': 1, 'content': [{'end': 1040.733, 'text': 'So, to be able to reduce the number of manual steps such as building, deploying and testing,', 'start': 1035.071, 'duration': 5.662}, {'end': 1048.474, 'text': 'Bosch has introduced the use of CloudBees from Jenkins and this is part of the enterprise Jenkins platform.', 'start': 1040.733, 'duration': 7.741}, {'end': 1059.798, 'text': 'It has significantly helped improve the efficiencies throughout the whole software development cycle, from automation stability and transparency,', 'start': 1048.895, 'duration': 10.903}], 'summary': 'Bosch uses cloudbees from jenkins to automate processes, improving software development cycle efficiencies.', 'duration': 24.727, 'max_score': 1035.071, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg1035070.jpg'}], 'start': 567.728, 'title': 'Jenkins and cloudbees in devops and automotive software development', 'summary': 'Discusses the pivotal role of jenkins in devops with its extensibility, ci pipeline, and architecture, exemplified by etsy releasing up to 50 versions daily. it also highlights how bosch streamlined automotive software using cloudbees jenkins, reducing build process time from 3 days to less than 3 hours.', 'chapters': [{'end': 962.569, 'start': 567.728, 'title': 'Jenkins for devops: extensibility, ci pipeline, and architecture', 'summary': 'Discusses how jenkins, with its extensibility through plugins and flexible ci pipeline, plays a pivotal role in devops, allowing for continuous integration, automated testing, and rapid deployment, exemplified by companies such as etsy releasing up to 50 versions of their website daily, and it also explores the architecture of jenkins including the master-slave setup.', 'duration': 394.841, 'highlights': ["Jenkins' extensibility through plugins allows for the addition of hundreds of plugins to customize and enhance its functionality, making it a pivotal tool for DevOps teams.", 'Jenkins facilitates a standard pipeline for continuous integration, starting with code committing, automated testing, and deployment, enabling companies like Etsy to release up to 50 versions of their website daily.', 'Jenkins architecture, including the master-slave setup, allows for parallel processing of multiple builds, tests, and production environments across the entire network, ensuring efficient workload distribution and management.']}, {'end': 1190.356, 'start': 962.569, 'title': 'Automotive software development: streamlining with cloudbees jenkins', 'summary': 'Highlights how bosch streamlined automotive software using cloudbees jenkins, reducing build process time from 3 days to less than 3 hours, enhancing deployment efficiency and visibility, and enabling continuous integration environment for software delivery.', 'duration': 227.787, 'highlights': ['Bosch reduced the build process time from 3 days to less than 3 hours using CloudBees Jenkins, significantly improving deployment efficiency. Large-scale deployments are now kept on track with expert support and clear visibility across operations.', 'Automotive manufacturers are shifting towards creating software to manage their products, seen in companies like Tesla, General Motors, and Ford, which rebranded as a technology company. This results in increasingly complex software within cars, requiring more testing and capabilities enhancements.', 'The software within cars is becoming more complex, leading to the need for more testing and capabilities enhancements to be added to the core software. This resulted in Bosch adopting continuous integration and continuous delivery best practices to streamline their automotive software.', 'CloudBees from Jenkins has helped Bosch to reduce manual steps such as building, deploying, and testing, significantly improving efficiencies throughout the software development cycle. Jenkins became a self-auditing environment, providing automation stability and transparency.', 'The presentation described the developer challenges before using Jenkins, the difference between nightly builds and continuous integration environments, and how a continuous integration environment should be set up to provide constant feedback for improving code delivery efficiency.']}], 'duration': 622.628, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/LFDrDnKPOTg/pics/LFDrDnKPOTg567728.jpg', 'highlights': ['Jenkins facilitates a standard pipeline for continuous integration, starting with code committing, automated testing, and deployment, enabling companies like Etsy to release up to 50 versions of their website daily.', 'Bosch reduced the build process time from 3 days to less than 3 hours using CloudBees Jenkins, significantly improving deployment efficiency.', "Jenkins' extensibility through plugins allows for the addition of hundreds of plugins to customize and enhance its functionality, making it a pivotal tool for DevOps teams.", 'Jenkins architecture, including the master-slave setup, allows for parallel processing of multiple builds, tests, and production environments across the entire network, ensuring efficient workload distribution and management.', 'Automotive manufacturers are shifting towards creating software to manage their products, seen in companies like Tesla, General Motors, and Ford, which rebranded as a technology company.']}], 'highlights': ['Jenkins is a central tool for automation, comprising easy installation, configuration, plugins, extensibility, and distribution, running on various operating systems and providing a user-friendly web interface for error checking and built-in help.', 'Jenkins facilitates a standard pipeline for continuous integration, starting with code committing, automated testing, and deployment, enabling companies like Etsy to release up to 50 versions of their website daily.', 'Bosch reduced the build process time from 3 days to less than 3 hours using CloudBees Jenkins, significantly improving deployment efficiency.', "Jenkins' extensibility through plugins allows for the addition of hundreds of plugins to customize and enhance its functionality, making it a pivotal tool for DevOps teams.", 'Jenkins architecture, including the master-slave setup, allows for parallel processing of multiple builds, tests, and production environments across the entire network, ensuring efficient workload distribution and management.', 'Continuous integration allows developers to continuously submit code to a server where it is validated and tested, preventing build breaks and improving productivity by offloading testing to a separate environment.', 'A case study of a company using Jenkins showcases its effectiveness in reducing project delays.', 'The chapter covers issues with code integration and project delays before using Jenkins.', "It explains Jenkins' features and architecture, emphasizing its role in continuous integration.", 'Two ways for continuous delivery are through nightly builds and continuous delivery, with the former involving a legacy approach of waiting for nightly builds and running and testing all code at night.', 'Hudson is the original version of Jenkins, which was acquired by Oracle, leading the team to create Jenkins as a hard fork, now a popular open source project with continuous contributions and a central role in CI environments.', 'Automotive manufacturers are shifting towards creating software to manage their products, seen in companies like Tesla, General Motors, and Ford, which rebranded as a technology company.']}