Configuring Max_Luns - Red Hat ENTERPRISE LINUX 5 - ADMINISTRATION Manual

file, each resource tree is an XML representation that specifies each resource, its attributes, and its
relationship among other resources in the resource tree (parent, child, and sibling relationships).
Note
Because an HA service consists of resources organized into a hierarchical tree, a
service is sometimes referred to as a resource tree or resource group. Both phrases are
synonymous with HA service.
At the root of each resource tree is a special type of resource — a service resource. Other types of
resources comprise the rest of a service, determining its characteristics. Configuring an HA service
consists of creating a service resource, creating subordinate cluster resources, and organizing them
into a coherent entity that conforms to hierarchical restrictions of the service.
Red Hat Cluster supports the following HA services:
• Apache
• Application (Script)
• LVM (HA LVM)
• MySQL
• NFS
• Open LDAP
• Oracle
• PostgreSQL 8
• Samba
• SAP
• Tomcat 5
There are two major considerations to take into account when configuring an HA service:
• The types of resources needed to create a service
• Parent, child, and sibling relationships among resources
The types of resources and the hierarchy of resources depend on the type of service you are
configuring.
The types of cluster resources are listed in
parent, child, and sibling relationships among resources is described in
Behavior.

2.5. Configuring max_luns

It is not necessary to configure max_luns in Red Hat Enterprise Linux 5.
Appendix C, HA Resource
Configuring max_luns
Parameters. Information about
Appendix D, HA Resource
19