Administrator's Guide

6.8 Compartments in HP Serviceguard Clusters
If you use compartments with HP Serviceguard, you must configure all Serviceguard
daemons in the default INIT compartment. However, you can configure Serviceguard
packages in other compartments. See the latest editions of Managing Serviceguard and
Using Serviceguard Extension for RAC for daemons required in Serviceguard and
Serviceguard extensions for Oracle Real Application Cluster (RAC).
Serviceguard packages can belong to specific compartments. Applications monitored
as part of a Serviceguard package can also be configured in specific compartments.
When you set up the compartment for a package, be sure that the resources required
by that package (such as volume groups, file systems, network addresses, and so on)
are accessible by that compartment. Compartment rules are node-specific and do not
get carried over during Serviceguard failover operations. To ensure proper operation
after a failover, all nodes in the cluster must have identical compartment configurations.
When a primary LAN interface fails over to a standby LAN interface, the compartment
label of the primary interface is automatically copied over to the standby interface as
long as the standby is not online. If the standby interface is already configured online,
the standby interface and the primary interface must be configured in the same
compartment to fail over successfully. If the standby interface is configured in a different
compartment from the primary interface, but is offline at the time of the failover, the
standby interface is updated to the primary interface compartment configuration when
the interface fails over.
To maintain proper Serviceguard operations when deploying compartments in HP
Serviceguard nodes or packages:
• Do not modify the INIT compartment specifications in any way.
• Ensure inetd runs in the INIT compartment.
• Ensure that all Serviceguard daemons in a cluster run in the INIT compartment. For
example, the daemons for Serviceguard Version A.11.16 include cmclconfd,
cmcld, cmlogd, cmlvmd, cmomd, and cmsnmpd. See Managing Serviceguard
for a list of all Serviceguard daemons.
• Ensure that all Serviceguard cluster requirements are met for Serviceguard Extensions
for RAC clusters. Additionally, clusters with Serviceguard Extension for RAC Version
A.11.16 need the cmsmgd daemon to run in the INIT compartment. RAC processes
must have access to the libnmapi2 library, and must communicate with cmsmgd.
See Using Serviceguard Extension for RAC for required daemons and libraries.
• Do not configure standby LAN interfaces in a compartment.
• Set up the compartments and rules identically on all nodes in the cluster.
Compartments and rules are specific to a system and do not get carried over when
a system fails over.
128 Compartments