Rimantas Mocevicius - CoreOS Essentials

Rimantas Mocevicius is an IT professional with over 20 years of experience in Linux. He is a supporter and fan of open source software. His passion for new technologies drives him forward, and he never wants to stop learning about them.

I would like to thank my wife and son for encouraging me to write this book and supporting me all throughout the way until its end.

I also want to say a big thank you to my technical reviewers, Paul Kirby, Brian Harrington, and Patrick Murray, for their invaluable recommendations.

Lots of thanks to the staff at Packt Publishing for guiding me through all of the book writing process and helping make it a nice book.

And of course, a big thank you goes to the CoreOS team for releasing such an amazing Linux-based operating system.

Brian 'Redbeard' Harrington is a developer, hacker, and technical writer in the areas of open source development and system administration. He has spent time in both defensive and offensive computing, combined with his readings of classical anarchism, to present new ideas in organizational hierarchies for software development. He has been featured on Al Jazeera as an expert in the field of computer security, and has been seen and heard on Bloomberg Television and National Public Radio. Brian currently resides in Oakland, California, USA. He was formerly the elected president of the HacDC hackerspace.

He is one of the early employees of CoreOS. In true start-up terms, this means that he has done everything from taking out the trash to racking servers and stepping on site with customers. He has previously worked with Red Hat, the US Census Bureau, and other organizations, chopping wood and carrying water to keep the Internet running.

Thank you to Holly. I'll always strive to make you proud.

Patrick Murray is a senior software engineer at Cisco Systems. He has been working in the Silicon Valley since 2008. He completed his education in computer engineering from Michigan Technological University in Houghton, Michigan, USA. His primary technology interests are cloud deployment and orchestration, distributed systems, NoSQL, and big data.

I would like to thank my beautiful newborn daughter, Amelia, and my wife, Xian, for their support and for letting me find the time to work as a reviewer.

Melissa Smolensky is the director of marketing at CoreOS and oversees all the marketing activities there. She is passionate about start-ups, the future of technology, and how technology is changing the way we consume and interact with media.

www.PacktPub.com

Support files, eBooks, discount offers, and more

For support files and downloads related to your book, please visit www.PacktPub.com.

Did you know that Packt offers eBook versions of every book published, with PDF and ePub files available? You can upgrade to the eBook version at > for more details.

At www.PacktPub.com, you can also read a collection of free technical articles, sign up for a range of free newsletters and receive exclusive discounts and offers on Packt books and eBooks.

https://www2.packtpub.com/books/subscription/packtlib

Do you need instant solutions to your IT questions? PacktLib is Packt's online digital book library. Here, you can search, access, and read Packt's entire library of books.

Why subscribe?

• Fully searchable across every book published by Packt
• Copy and paste, print, and bookmark content
• On demand and accessible via a web browser

Free access for Packt account holders

If you have an account with Packt at www.PacktPub.com, you can use this to access PacktLib today and view 9 entirely free books. Simply use your login credentials for immediate access.

Preface

CoreOS is a new breed of the Linux operating system and is optimized to run Linux containers, such as Docker and rkt. It has a fully automated update system, no package manager, and a fully clustered architecture.

Whether you are a Linux expert or just a beginner with some knowledge of Linux, this book will provide you with step-by-step instructions on installing and configuring CoreOS servers as well as building development and production environments. You will be introduced to the new CoreOS rkt Application Containers runtime engine and Google's Kubernetes system, which allows you to manage a cluster of Linux containers as a single system.

What this book covers

, CoreOS Overview and Installation , contains a brief CoreOS overview what CoreOS is about.

, Getting Started with etcd , explains what etcd is and what it can be used for.

, Getting Started with systemd and fleet , covers an overview of systemd. This chapter tells you what fleet is and how to use it to deploy Docker containers.

, Managing Clusters , is a guide to setting up and managing a cluster.

, Building a Development Environment , shows you how to set up the CoreOS development environment to test your Application Containers.

, Building a Deployment Setup , helps you set up code deployment, the Docker image builder, and the private Docker registry.