Calvin Sangbin Park - Jenkins Administrators Guide: Install, manage, and scale a CI/CD build and release system to accelerate your product life cycle

In 2019, I had the pleasure of working closely with Kohsuke Kawaguchi, creator of Jenkins. That year, Jenkins was celebrating its 15th anniversary, and Kohsuke reached out to the community to solicit Jenkins success stories. Each response was more impressive than the last, with user testimonies of how Jenkins had transformed industries, as well as success stories of how Jenkins had helped propel the careers of individual practitioners. My favorite was learning how Jenkins was used to build the World Anti-Malarial Network.

I came to see firsthand how Jenkins is one of the most used and loved technologies in the software industry. For over 15 years, Jenkins has had a huge impact on developer productivity in a wide range of industries, everything from aerospace to retail, through to education and finance. Jenkins is an open source project that is backed by one of the most dedicated open source communities, enabling it to continue a very long trend of pioneering work in the CI/CD space. As a result, Jenkins is continuously evolving and improving to serve its users needs.

Software is increasingly playing a key role in various organizations and industries. We are delivering more software than ever before, and software delivery is a key differentiator for every organization. Jenkins remains at the heart of this transformation. As Jenkins continuously innovates, it is important to be able to keep up with the latest changes and understand the best ways to use this powerful technology. That is why I am delighted that Calvin Park, Lalit Adithya, and Sam Gleske have come together to write this book, with support from Vijin Boricha and all at Packt. I had the pleasure of meeting Sam Gleske at one of the Jenkins World contributor summits a few years ago and I appreciate his many and continuous contributions to the project.

In Jenkins Administrators Guide, many key topics are covered. From the ever-important script security to tackling shared libraries, as well as using the ever-so-powerful Jenkins Configuration as Code. The book also covers emerging trends such as GitOps and very practical information for optimizing your Jenkins setup (complete with warnings not to overengineer your setup if you dont need to!).

This book is an invaluable resource for those who want to make the most of Jenkins and keep up with recent improvements and make the most of the amazing productivity you can unlock with an optimal Jenkins setup.

Tracy Miranda
Executive Director, Continuous Delivery Foundation

Calvin Sangbin Park is a CI/CD DevOps engineer at NVIDIA. He's been using Jenkins throughout his career to automate builds for Arduino maker boards, Android tablets, enterprise software packages, and even firmware for an industrial laser for etching CPUs. Lately, he's been focusing on Kubernetes, monitoring, and process visualizations. He plans to contribute to the open source community by developing a plugin that optimizes Kubernetes cluster management.

Behind every great book is a great family. Thank you, Eunyoung and Younghwan. This book is as much yours as it is mine. Ilove you.

Also, many thanks to my brother and editor, Sangyoon; my brilliant coauthors, Lalit and Sam; the insightful technical reviewers, Huo, Dominic, and Ray; and the wise mentors, Madhusudan N and Sebassvan Boxel.

Lalit Adithya is a software engineer with the DevOps team at NVIDIA. He has built code-commit-to-production pipelines using Jenkins and GitHub Actions. He has built and scaled business-critical applications that serve several thousand requests every minute. He has also built frameworks that have boosted developer productivity by abstracting away the complexities of networking, request/response routing, and more. He knows the ins and outs of several public cloud platforms and can architect cost-effective and scalable cloud-native solutions.

I thank my parents for all their love, support, and encouragement. I also thank all my mentors and friends who supported me, encouraged me to be the best version of myself, and helped me strive for perfection.

Samuel Gleske has been a Jenkins user since 2011, actively contributing to documentation and plugins, and discovering security issues in the system. Some notable plugins that Sam has maintained include the Slack plugin, the GHPRB plugin, the GitHub Authentication plugin, and a half dozen others. Sam has presented on and shared scripts for the Script Console documentation and is the primary author of its Wiki page. Since 2014, Sam has been developing Jervis Jenkins as a service which enables Jenkins to scale to more than 4,000 users and 30,000 jobs in a single Jenkins controller. Jervis emphasizes full self-service within Jenkins for users while balancing security.