CentOS High Availability

Mitja Resman

• Editorial: Packt Publishing
• Año: 2015
• ISBN:
  9781785282485
• Categoría: Computer Science
• Categoría: Computer Networking

CentOS High Availability

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Table of Contents

CentOS High Availability

Credits

About the Author

About the Reviewers

www.PacktPub.com

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Why subscribe?

Free access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Getting Started with High Availability

What is high availability?

System design

Computer clusters

High-availability solutions

Summary

2. Meet the Cluster Stack on CentOS

Cluster stack software

The cluster communication layer

The cluster messaging and membership service

Quorum

The cluster resource management layer

A theoretical cluster service example

Cluster stack on CentOS Linux

Preparing for cluster stack software installation

Summary

3. Cluster Stack Software on CentOS 6

Cluster infrastructure

Cluster operating system preparation

Installing and configuring Corosync

Installing and configuring CMAN

Installing and configuring RGManager

Summary

4. Resource Manager on CentOS 6

Working with RGManager

Configuring failover domains

Adding cluster resources and services

Resources

Services

Managing cluster services

Removing cluster resources and services

Summary

5. Playing with Cluster Nodes on CentOS 6

Adding a new cluster node

Removing a cluster node

Summary

6. Fencing on CentOS 6

Fencing

Fencing configuration

APC switch fencing

IPMI management board fencing

HP iLO management board fencing

Fencing test

Fence master node

Fence check

Fence node

Summary

7. Testing Failover on CentOS 6

Hardware failure

Network failure

Summary

8. Two-node Cluster Considerations on CentOS 6

Quorum in a two-node cluster

Two-node cluster configuration

Quorum disk

Summary

9. Cluster Stack Software on CentOS 7

Cluster infrastructure

Cluster operating system preparation

Network configuration

NTP configuration

DNS configuration

Installing and configuring Corosync

Installing and configuring Pacemaker

Summary

10. Resource Manager on CentOS 7

Working with pcs

Adding cluster resources, constraints, and resource groups

Configuring resources

Configuring resource constraints

Configuring resource groups

Managing resources

Moving resources around

Stopping resources

Starting resources

Banning resources

Clearing resource constraints

Removing cluster constraints, resource groups, and resources

Removing resource constraints

Removing resource groups

Removing resources

Summary

11. Playing with Cluster Nodes on CentOS 7

Adding a new cluster node

Cluster node standby mode

Removing a cluster node

Summary

12. STONITH on CentOS 7

Fencing

Configuring fence devices

APC switch fencing

IPMI management board fencing

HP iLO management board fencing

Fence test

Summary

13. Testing Failover on CentOS 7

Hardware failure

Network failure

Summary

14. Two-node Cluster Considerations on CentOS 7

Quorum in a two-node cluster

Two-node cluster configuration

Summary

Index

CentOS High Availability

Copyright © 2015 Packt Publishing

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First published: April 2015

Production reference: 1220415

Published by Packt Publishing Ltd.

Livery Place

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ISBN 978-1-78528-248-5

www.packtpub.com

Credits

Author

Mitja Resman

Reviewers

Denis Fateyev

Christophe Grenier

Commissioning Editor

Veena Pagare

Acquisition Editor

Reshma Raman

Content Development Editor

Neeshma Ramakrishnan

Technical Editor

Abhishek R. Kotian

Copy Editor

Vikrant Phadke

Project Coordinator

Danuta Jones

Proofreaders

Stephen Copestake

Safis Editing

Paul Hindle

Indexer

Rekha Nair

Production Coordinator

Melwyn D'sa

Cover Work

Melwyn D'sa

About the Author

Mitja Resman hails from a small, beautiful country called Slovenia in south-central Europe. He is a fan of Linux and also an open source enthusiast. He is a Red Hat Certified Engineer and Linux Professional Institute professional. Working as a system administrator, Mitja gained years of professional experience with open source software and Linux system administration on local and international projects. The Swiss Army Knife syndrome makes him an expert in the field of VMware virtualization, Microsoft system administration, and more recently, Android system administration.

Mitja has a strong desire to lea...