Part 2. Workflow runtime

Now that you know how GitHub Actions work and how to author them, part 2 explains the GitHub Actions runtime. Chapter 5 shows the different hosting types for executing your workflows on either GitHub-hosted runners or self-hosted runners. You will learn how to find preinstalled software on hosted runners and locate operating system information from the logs. Chapter 6 shows all the intricacies of installing the runner yourself and all the security aspects you need to be responsible for. The chapter also covers self-hosting runners on a large scale for enterprises using GitHub’s recommended setup. In chapter 7, you will learn how to manage your self-hosted runners, from restricting access to the runners using runner groups, to monitoring the usage of runners and checking capacity needs. Once you finish this part of the book, you will know how to use the runtime for GitHub Actions!