Book Image

Jenkins Administrator's Guide

By : Calvin Sangbin Park, Lalit Adithya, Sam Gleske
Book Image

Jenkins Administrator's Guide

By: Calvin Sangbin Park, Lalit Adithya, Sam Gleske

Overview of this book

Jenkins is a renowned name among build and release CI/CD DevOps engineers because of its usefulness in automating builds, releases, and even operations. Despite its capabilities and popularity, it's not easy to scale Jenkins in a production environment. Jenkins Administrator's Guide will not only teach you how to set up a production-grade Jenkins instance from scratch, but also cover management and scaling strategies. This book will guide you through the steps for setting up a Jenkins instance on AWS and inside a corporate firewall, while discussing design choices and configuration options, such as TLS termination points and security policies. You’ll create CI/CD pipelines that are triggered through GitHub pull request events, and also understand the various Jenkinsfile syntax types to help you develop a build and release process unique to your requirements. For readers who are new to Amazon Web Services, the book has a dedicated chapter on AWS with screenshots. You’ll also get to grips with Jenkins Configuration as Code, disaster recovery, upgrading plans, removing bottlenecks, and more to help you manage and scale your Jenkins instance. By the end of this book, you’ll not only have a production-grade Jenkins instance with CI/CD pipelines in place, but also knowledge of best practices by industry experts.
Table of Contents (13 chapters)
12
Index

Providing shared libraries

As an administrator, there are two ways to make the shared libraries available to the pipelines in our Jenkins. Let's start with the folder-level shared library, which provides more limited access.

Folder-level shared libraries

A shared library can be made available to the pipelines in a specific folder by configuring it in the folder's configuration page. When a specific project's pipelines have repeated code, the helper functions that modularize the project's repeated code should be stored in a folder-level shared library, not a global shared library. We will see why soon.

Log in to Jenkins as the adder-admin user, click the adder folder, then click Configure on the left. Under Pipeline Libraries (gotta love the naming inconsistency), click the Add button to reveal a Library section. Configure the library as follows:

  • Name: my-folder-shared-lib (This is the name that the Jenkinsfiles will use to point to this...