Book Image

CentOS High Availability

Book Image

CentOS High Availability

Overview of this book

Table of Contents (21 chapters)
CentOS High Availability
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
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...