Book Image

Mastering Puppet - Second Edition

By : Thomas Uphill
Book Image

Mastering Puppet - Second Edition

By: Thomas Uphill

Overview of this book

Puppet is a configuration management system and a language. It was written for and by system administrators to manage large numbers of systems efficiently and prevent configuration drifts. Mastering Puppet deals with the issues faced when scaling out Puppet to handle large numbers of nodes. It will show you how to fit Puppet into your enterprise and allow many developers to work on your Puppet code simultaneously. In addition, you will learn to write custom facts and roll your own modules to solve problems. Next, popular options for performing reporting and orchestration tasks will be introduced in this book. Moving over to troubleshooting techniques, which will be very useful. The concepts presented are useful to any size organization. By the end of the book, you will know how to deal with problems of scale and exceptions in your code, automate workflows, and support multiple developers working simultaneously.
Table of Contents (17 chapters)

Summary


Dealing with scale is a very important task in enterprise deployments. In the first section, we configured a Puppet master with puppetserver. We then expanded the configuration with load balancing and proxying techniques realizing that Puppet is simply a web service. Understanding how nodes request files, catalogs, and certificates allows you to modify the configurations and bypass or alleviate bottlenecks.

In the last section, we explored masterless configuration, wherein instead of checking into Puppet to retrieve new code, the nodes check out the code first and then run against it on a schedule.

Now that we have dealt with the load issue, we need to turn our attention to managing the modules to be applied to nodes. We will cover the organization of the nodes in the next chapter.