Book Image

Learning CoreOS

By : Kingston Smiler. S, Shantanu Agrawal
Book Image

Learning CoreOS

By: Kingston Smiler. S, Shantanu Agrawal

Overview of this book

CoreOS is an open source operating system developed upon the Linux kernel. The rise of CoreOS is directly related to the rise of Docker (a Linux container management system). It is a minimal operating system layer and takes a different approach to automating the deployment of containers. The major difference between CoreOS and other Linux distributions is that CoreOS was designed to deploy hundreds of servers. CoreOS immensely helps the users to create systems, which are easy to scale and manage, making life easier for all, be it developer, QA, or deployer. This book is all about setting up, deploying, and using CoreOS to manage clusters and clouds. It will help you understand what CoreOS is and its benefits as a cloud orchestration platform. First, we’ll show you how to set up a simple CoreOS instance with single node in the cluster and how to run a Docker container inside the CoreOS instance. Next, you’ll be introduced to Fleet and systemd, and will deploy and distribute Docker services across different nodes in cluster using Fleet. Later, you’ll be briefed about running services in a cluster with constraints, publishing the services already running on the cluster to new services, and making your services interact with each other. We conclude by teaching you about advanced container networking. By the end of the book, you will know the salient features of CoreOS and will be able to deploy, administrate, and secure a CoreOS environment.

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Learning CoreOS
Kingston Smiler. S | Shantanu Agrawal
Mar, 2016 | 190 pages
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Table of Contents (15 chapters)
Learning CoreOS
Learning CoreOS
Credits
Credits
About the Authors
About the Authors
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
CoreOS, Yet Another Linux Distro?
CoreOS, Yet Another Linux Distro?
Introduction to CoreOS
CoreOS versus other Linux distributions
CoreOS high-level architecture
CoreOS and OpenStack
Summary
2
Setting Up Your CoreOS Environment
Setting Up Your CoreOS Environment
Installing GIT
Installing VirtualBox
Introduction to Vagrant
Setting up CoreOS on VMware vSphere
Installing VMware vSphere Client
Introduction to Docker
Summary
3
Creating Your CoreOS Cluster and Managing the Cluster
Creating Your CoreOS Cluster and Managing the Cluster
Introduction to clustering
The why and the benefits of clustering
CoreOS clustering
Summary
4
Managing Services with User-Defined Constraints
Managing Services with User-Defined Constraints
Introduction to service constraints
Predefined constraints using metadata
Summary
5
Discovering Services Running in a Cluster
Discovering Services Running in a Cluster
Introduction and necessity of service discovery
Mechanism for service discovery
HAProxy and service discovery
Summary
6
Service Chaining and Networking Across Services
Service Chaining and Networking Across Services
Introduction to and necessity of service chaining
Introduction to Docker networking
Introduction to Weave
Introduction to Flannel/Rudder
Integrating Flannel with CoreOS
Summary
7
Creating a Virtual Tenant Network and Service Chaining Using OVS
Creating a Virtual Tenant Network and Service Chaining Using OVS
Introduction to OVS
Introduction to overlay and underlay networks
Introduction to network virtualization
Running OVS in CoreOS
Summary
8
What Next?
What Next?
Container security
Update and patches – CoreUpdate
Dex
sysdig
Competitive container orchestration mechanism
Apache-Mesos
Swarm
Docker data volume management
Open Container Project
Summary
Index
Index

About the Authors

Kingston Smiler. S is a seasoned professional with 12 years of experience in software development and presales, encompassing wide range of skill set, roles, and industry verticals. He has solid expertise in data communication networking and software-based switching and routing solutions, and virtualization platforms such as OpenStack, OpenDaylight controller, Docker Containers, and CoreOS. He is currently working as an advisor and technical consultant for networking companies in the development of Layer2 and Layer3 IP protocols.

He also has working experience in building IoT sensor networks with IoT OSes such as RIOT and Contiki; SoCs such as Arduino, Raspberry Pi, and Intel Galileo; and IoT protocols such as 802.14.5 (Zigbee), 6lowpan, RPL, CoAP, and MQTT. He is interested in building small-scale robots using Arduino and ROS Robotics platforms.

Active in various networking standard bodies such as IETF, IEEE, and ONF, Kingston has proposed two drafts in TRILL WG and one draft in MPLS WG of IETF. With the current surge in SDN, virtualization, and NFV, his primary focus is towards these areas. He completed a bachelor of engineering degree in computer science from Madras University.

Kingston is also the author of OpenFlow Cookbook, Packt Publishing.

First and foremost, I would like to thank the lord to give me immense confidence and energy to start and complete this book successfully. I want to thank my kids, mother, brother, sister, and all my other family members for their support and encouragement. Thanks to my coauthor Shantanu Agrawal who helped me finish the book on time. Thanks to Shali and Divya for their reviews and helping me to finish this book despite their busy schedule. Special thanks to my wife for her patience and support in bringing up this book as most part of the book was written on weekends, at night, and during vacations.

Shantanu Agrawal has over 15 years of experience in the telecom industry working in systems having high transaction rates with scalable architectures. He has extensive experience of consulting for solutions, designing, and implementing high-performing and highly available software. He has exposure to the complete life cycle of the product development and deployment challenges. During his journey, he has worked on different hardware platforms and operating systems, such as proprietary UNIX-based hardware, embedded systems with real-time operating systems, Linux, Solaris, and so on. He has experience in the core network elements and protocols used in GSM/UMTS/LTE networks. He graduated from IIT BTU and did post-graduation from BITS Pilani.

I would thank my family for allowing me to squeeze their time for this book and for being understanding. I would also want to thank my coauthor Kingston Smiler for driving this to completion and for his excellent contributions.

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