Installation guide

Fig u re 2.1. Web Server Clu st er Service Examp le

Clients access the HA service through the IP address 10.10.10.201, enabling interaction with the web

server application, httpd-content. The httpd-content application uses the gfs-content-webserver file

system. If node B were to fail, the content-webserver HA service would fail over to node D. If node D

were not available or also failed, the service would fail over to node A. Failover would occur with

minimal service interruption to the cluster clients. For example, in an HTTP service, certain state

information may be lost (like session data). The HA service would be accessible from another cluster

node via the same IP address as it was before failover.

Note

For more information about HA services and failover domains, refer to Red Hat Cluster Suite

Overview. For information about configuring failover domains, refer to Section 3.7,

“ Configuring a Failover Domain” (using Co n g a) or Section 5.6, “ Configuring a Failover

Domain” (using system-config-cluster).

⁠Chapt er 2 . Before Config uring a Red Hat Clust er