Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Understanding Serviceguard Software Components
Serviceguard Architecture
Chapter 342
For more information about the Quorum Server software and how it
works, including instructions for configuring the Quorum Server as a
Serviceguard package, see the latest version of the HP Serviceguard
Quorum Server release notes at http://docs.hp.com -> High
Availability -> Quorum Server. See also “Use of the Quorum Server
as a Cluster Lock” on page 47.
The path for this daemon is:
• For SUSE: /opt/qs/bin/qs
• For Red Hat: /usr/local/qs/bin/qs
Utility Daemon: cmlockd
Runs on every node on which cmcld is running. It maintains the active
and pending cluster resource locks.
Cluster SNMP Agent Daemon: cmsnmpd
This daemon collaborates with the SNMP Master Agent to provide
instrumentation for the cluster Management Information Base (MIB).
The SNMP Master Agent and the cmsnmpd provide notification (traps)
for cluster-related events. For example, a trap is sent when the cluster
configuration changes, or when a Serviceguard package has failed. To
configure the agent to send traps to one or more specific destinations,
add the trap destinations to /etc/snmp/snmptrapd.conf (SUSE and
Red Hat). Make sure traps are turned on with trap2sink in
/etc/snmp/snmpd.conf (SUSE and Red Hat).
The installation of the cmsnmpd rpm configures snmpd and cmsnmpd to
start up automatically. Their startup scripts are in /etc/init.d/. The
scripts can be run manually to start and stop the daemons.
For more information, see the cmsnmpd (1) manpage.