Sreenivas Makam - Mastering CoreOS

Mastering CoreOS

Table of Contents

Mastering CoreOS

Mastering CoreOS

Copyright 2016 Packt Publishing

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First published: February 2016

Production reference: 1190216

Published by Packt Publishing Ltd.

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ISBN 978-1-78528-812-8

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Credits

Author

Sreenivas Makam

Reviewers

Francisco Fernndez Castao

Neependra Khare

Commissioning Editor

Kunal Parikh

Acquisition Editor

Vinay Argekar

Content Development Editor

Rashmi Suvarna

Technical Editor

Bharat Patil

Copy Editor

Tasneem Fatehi

Project Coordinator

Judie Jose

Proofreader

Safis Editing

Indexer

Rekha Nair

Graphics

Kirk D'Penha

Abhinash Sahu

Production Coordinator

Melwyn Dsa

Cover Work

Melwyn Dsa

About the Author

Sreenivas Makam is currently working as a senior engineering manager at Cisco Systems, Bangalore. He has a masters in electrical engineering and around 18 years of experience in the networking industry. He has worked in both start-ups and big established companies. His interests include SDN, NFV, Network Automation, DevOps, and cloud technologies, and he likes to try out and follow open source projects in these areas. His blog can be found at https://sreeninet.wordpress.com/ and his hacky code at https://github.com/smakam.

Sreenivas is part of the Docker bloggers forum and his blog articles have been published in Docker weekly newsletters. He has done the technical reviewing for Mastering Ansible , Packt Publishing and Ansible Networking Report , O'Reilly Publisher . He has also given presentations at Docker meetup in Bangalore. Sreenivas has one approved patent.

Acknowledgments

I have been very fortunate to always have good people around me and I would like to thank God for that. I would like to thank my parents for all the sacrifices they made while raising me and my sister and for providing the best possible support. Next, I would like to thank my wife, Lakshmi (Lucky), who has been my best friend for the last 13 years. I feel fortunate to have her as my wife as she is better qualified than me in almost everything. My daughter, Sasha, has been the spark in my life and I enjoy all the little interactions with her. I would like to thank my wife and daughter for being patient in dealing with my occasional tantrums. Lastly, I would like to thank my sister, brother-in-law, and niece for being there for me always.

I would like to thank my current company, Cisco, for allowing me to spend time on the book. I would also like to thank my Cisco managers and colleagues who have been very supportive to me in this effort.

I would like to thank my wife and my niece, Pallavi, for reviewing some of the chapters. My wife and daughter also helped out by drawing a rough draft of some of the pictures used in the book.

I would like to thank my editors and reviewers for guiding and correcting me throughout the book's preparation.

These acknowledgements would not be complete without thanking the folks at CoreOS and Docker for the amazing technology that they have developed, which allowed me to write about it. Lastly, a big thanks to the open source community for making software easily accessible to everyone.

About the Reviewers

Francisco Fernndez Castao works at GrapheneDB, one of the biggest graph database cloud providers, as a site reliability engineer. He has previously worked in a few start-ups in software tools to social networks. His interests are distributed systems, functional programming, databases, mathematics, and machine learning.

Neependra Khare is the author of Docker Cookbook , Packt Publishing (https://www.packtpub.com/virtualization-and-cloud/docker-cookbook), and has been co-organizing a Docker meetup group in Bangalore for more than a year now (http://www.meetup.com/Docker-Bangalore). He has more than 11 years of IT experience, and has earlier worked as a system administrator, support engineer, file system developer, and performance engineer. Currently, he is freelancing for Container technologies such as Docker, Kubernetes, Project Atomic, and CoreOS. You can visit his website at http://neependra.net/ and follow him on Twitter. His Twitter handle is @neependra.ss .

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Preface

Public cloud providers such as Amazon and Google have revolutionized cloud technologies and made it easier to consume for end users. The goal of CoreOS has been to create a secure and reliable cluster OS and make it easier to develop distributed applications using Containers. CoreOS's philosophy has been to keep the kernel to a bare minimum while keeping it secure, reliable, and updated. Everything on top of the kernel runs as Containers, except a few critical services. Containers have revolutionized application development as well as application deployment. Even though Containers existed for a long time, Docker revolutionized the Container technology by making it easier to consume and distribute Containers.

By making critical components of their technologies open source, CoreOS has created a major following in the CoreOS community as well as the general Linux and cloud communities. With Tectonic, CoreOS has combined all its open source technologies along with Kubernetes into one commercial offering. Cluster OS, Containers, and distributed application deployment are all pretty new and there is a lot of development happening in these areas. CoreOS is at a sweet spot, and this will encourage you to understand more about it.