Support for HP Apache on CVM and CFS

HP Apache supports CVM/CFS 4.1 and 5.0 on Serviceguard version A.11.18, and can be configured in the following two modes:

Active-Active: In an active-active configuration, multiple nodes can run an Apache instance while concurrently serving the same document root. To coordinate the startup and shutdown of the Apache instances with cluster node startup and shutdown, create a one-node package for each node that runs an Apache instance.

Active-Passive: In an active-passive configuration an instance of Apache web server can run on only one node at any time. A package of this configuration is a typical failover package. The active-passive support on CVM/CFS comes with a caution/limitation that no attempts should be made to start the same instance of Apache on any other node while an Apache instance is up on one node.

	NOTE: In both active-active and active-passive configurations, the HP Apache installation on all nodes must reside on the shared CFS mount point. For complete details on how to set up Apache Web server on CVM/CFS, refer the HP Apache white paper, Configuring HP Apache Veritas CFS with HP Serviceguard on CFS/CVM under the generic section HP Apache-based Web Server, v.2.0.x for techtips at http://www.hp.com/products1/unix/webservers/apache/techtips/index.html