CentOS High Availability电子书

CentOS High Availability

Table of Contents

CentOS High Availability

Credits

About the Author

About the Reviewers

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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