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Jenkins: The Definitive Guide

Cover of Jenkins: The Definitive Guide by John Ferguson Smart Published by O'Reilly Media, Inc.
  1. Jenkins: The Definitive Guide
    1. SPECIAL OFFER: Upgrade this ebook with O’Reilly
    2. Foreword
    3. Preface
      1. Audience
      2. Book Layout
      3. Jenkins or Hudson?
      4. Font Conventions
      5. Command-Line Conventions
      6. Contributors
      7. The Review Team
      8. Book Sponsors
      9. Using Code Examples
      10. Safari® Books Online
      11. How to Contact Us
      12. Acknowledgments
    4. 1. Introducing Jenkins
      1. Introduction
      2. Continuous Integration Fundamentals
      3. Introducing Jenkins (née Hudson)
      4. From Hudson to Jenkins—A Short History
      5. Should I Use Jenkins or Hudson?
      6. Introducing Continuous Integration into Your Organization
      7. Where to Now?
    5. 2. Your First Steps with Jenkins
      1. Introduction
      2. Preparing Your Environment
      3. Starting Up Jenkins
      4. Configuring the Tools
      5. Your First Jenkins Build Job
      6. Your First Build Job in Action
      7. More Reporting—Displaying Javadocs
      8. Adding Code Coverage and Other Metrics
      9. Conclusion
    6. 3. Installing Jenkins
      1. Introduction
      2. Downloading and Installing Jenkins
      3. Preparing a Build Server for Jenkins
      4. The Jenkins Home Directory
      5. Installing Jenkins on Debian or Ubuntu
      6. Installing Jenkins on Redhat, Fedora, or CentOS
      7. Installing Jenkins on SUSE or OpenSUSE
      8. Running Jenkins as a Stand-Alone Application
      9. Running Jenkins Behind an Apache Server
      10. Running Jenkins on an Application Server
      11. Memory Considerations
      12. Installing Jenkins as a Windows Service
      13. What’s in the Jenkins Home Directory
      14. Backing Up Your Jenkins Data
      15. Upgrading Your Jenkins Installation
      16. Conclusion
    7. 4. Configuring Your Jenkins Server
      1. Introduction
      2. The Configuration Dashboard—The Manage Jenkins Screen
      3. Configuring the System Environment
      4. Configuring Global Properties
      5. Configuring Your JDKs
      6. Configuring Your Build Tools
      7. Configuring Your Version Control Tools
      8. Configuring the Mail Server
      9. Configuring a Proxy
      10. Conclusion
    8. 5. Setting Up Your Build Jobs
      1. Introduction
      2. Jenkins Build Jobs
      3. Creating a Freestyle Build Job
      4. Configuring Source Code Management
      5. Build Triggers
      6. Build Steps
      7. Post-Build Actions
      8. Running Your New Build Job
      9. Working with Maven Build Jobs
      10. Using Jenkins with Other Languages
      11. Conclusion
    9. 6. Automated Testing
      1. Introduction
      2. Automating Your Unit and Integration Tests
      3. Configuring Test Reports in Jenkins
      4. Displaying Test Results
      5. Ignoring Tests
      6. Code Coverage
      7. Automated Acceptance Tests
      8. Automated Performance Tests with JMeter
      9. Help! My Tests Are Too Slow!
      10. Conclusion
    10. 7. Securing Jenkins
      1. Introduction
      2. Activating Security in Jenkins
      3. Simple Security in Jenkins
      4. Security Realms—Identifying Jenkins Users
      5. Authorization—Who Can Do What
      6. Auditing—Keeping Track of User Actions
      7. Conclusion
    11. 8. Notification
      1. Introduction
      2. Email Notification
      3. More Advanced Email Notification
      4. Claiming Builds
      5. RSS Feeds
      6. Build Radiators
      7. Instant Messaging
      8. IRC Notification
      9. Desktop Notifiers
      10. Notification via Notifo
      11. Mobile Notification
      12. SMS Notification
      13. Making Noise
      14. Extreme Feedback Devices
      15. Conclusion
    12. 9. Code Quality
      1. Introduction
      2. Code Quality in Your Build Process
      3. Popular Java and Groovy Code Quality Analysis Tools
      4. Reporting on Code Quality Issues with the Violations Plugin
      5. Using the Checkstyle, PMD, and FindBugs Reports
      6. Reporting on Code Complexity
      7. Reporting on Open Tasks
      8. Integrating with Sonar
      9. Conclusion
    13. 10. Advanced Builds
      1. Introduction
      2. Parameterized Build Jobs
      3. Parameterized Triggers
      4. Multiconfiguration Build Jobs
      5. Generating Your Maven Build Jobs Automatically
      6. Coordinating Your Builds
      7. Build Pipelines and Promotions
      8. Conclusion
    14. 11. Distributed Builds
      1. Introduction
      2. The Jenkins Distributed Build Architecture
      3. Master/Slave Strategies in Jenkins
      4. Associating a Build Job with a Slave or Group of Slaves
      5. Node Monitoring
      6. Cloud Computing
      7. Using the CloudBees DEV@cloud Service
      8. Conclusion
    15. 12. Automated Deployment and Continuous Delivery
      1. Introduction
      2. Implementing Automated and Continuous Deployment
      3. Deploying to an Application Server
      4. Conclusion
    16. 13. Maintaining Jenkins
      1. Introduction
      2. Monitoring Disk Space
      3. Monitoring the Server Load
      4. Backing Up Your Configuration
      5. Archiving Build Jobs
      6. Migrating Build Jobs
      7. Conclusion
    17. A. Automating Your Unit and Integration Tests
      1. Automating Your Tests with Maven
      2. Automating Your Tests with Ant
    18. Index
    19. About the Author
    20. Colophon
    21. SPECIAL OFFER: Upgrade this ebook with O’Reilly

Coordinating Your Builds

Triggering downstream build jobs is easy enough. However, when setting up larger and more complicated build job setups, you sometimes would like builds to be able to run concurrently, or possibly wait for certain build jobs to finish before proceeding. In this section, we will look at techniques and plugins that can help you do this.

Parallel Builds in Jenkins

Jenkins has built-in support for parallel builds—when a build job starts, Jenkins will assign it to the first available build node, so you can potentially have as many parallel builds running as you have build nodes available.

If you need to run slight variations of the same build job in parallel, multiconfiguration build jobs (see Multiconfiguration Build Jobs) are an excellent option. This can come in handy as a way of accelerating your build process. A typical application of multiconfiguration build jobs in this context is to run integration tests in parallel. One strategy is to set up an integration test build job that can be run in different ways to execute different subsets of the integration tests. You could define separate Maven profiles, for example, or configure your build to use a command-line parameter to decide which tests to run. Once you have set up your build script in this way, it is easy to configure a multiconfiguration build job to run the subsets of your integration tests in parallel.

You can also get Jenkins to trigger several downstream builds in parallel, simply by listing them ...

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