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CentOS High Availability

You're reading from CentOS High Availability

Product type Book

Published in Apr 2015

Publisher

ISBN-13 9781785282485

Pages 174 pages

Edition 1st Edition

Languages

Concepts

High Performance Programming

Table of Contents (21) Chapters

CentOS High Availability

Credits

About the Author

About the Reviewers

www.PacktPub.com

Preface

1. Getting Started with High Availability

2. Meet the Cluster Stack on CentOS

3. Cluster Stack Software on CentOS 6

4. Resource Manager on CentOS 6

5. Playing with Cluster Nodes on CentOS 6

6. Fencing on CentOS 6

7. Testing Failover on CentOS 6

8. Two-node Cluster Considerations on CentOS 6

9. Cluster Stack Software on CentOS 7

10. Resource Manager on CentOS 7

11. Playing with Cluster Nodes on CentOS 7

12. STONITH on CentOS 7

13. Testing Failover on CentOS 7

14. Two-node Cluster Considerations on CentOS 7

Index

Working with RGManager

When we work with RGManager, the cluster resources are configured within the /etc/cluster/cluster.conf CMAN configuration file. RGManager has a dedicated section in the CMAN configuration file defined by the <rm> tag. Part of configuration within the <rm> tag belongs to RGManager. The RGManager section begins with the <rm> tag and ends with the </rm> tag. This syntax is common for XML files.

The RGManager section must be defined within the <cluster> section of the CMAN configuration file but not within the <clusternodes> or <fencedevices> sections. We will be able to review the exact configuration syntax from the example configuration file provided in the next paragraphs.

The following elements can be used within the <rm> RGManager tag:

Failover Domain: (tag: <failoverdomains></failoverdomains>): A failover domain is a set of cluster nodes that are eligible to run a specific cluster service in the event of a...

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