Managing Serviceguard A.11.20, March 2013

NOTE: You should not configure a second lock volume group or physical volume unless your
configuration specifically requires it. See “Dual Lock Disk” (page 48).
If your configuration requires you to configure a second cluster lock, enter the following parameters
in the cluster configuration file:
SECOND_CLUSTER_LOCK_VG /dev/volume-group
SECOND_CLUSTER_LOCK_PV /dev/dsk/block-special-file
where volume-group is the name of the second volume group and block-special-file is
the physical volume name of a lock disk in the chosen volume group. These lines should be added
for each node; for example:
SECOND_CLUSTER_LOCK_VG /dev/vglock
SECOND_CLUSTER_LOCK_PV /dev/dsk/c4t0d0
or (using agile addressing; see “About Device File Names (Device Special Files)” (page 81)):
SECOND_CLUSTER_LOCK_VG /dev/vglock
SECOND_CLUSTER_LOCK_PV /dev/disk/disk100
NOTE: If you are using cDSFs, the device file would be in the /dev/rdisk/ directory; for
example /dev/rdisk/disk100. See “About Cluster-wide Device Special Files (cDSFs)” (page 109).
See also “Choosing Cluster Lock Disks” (page 178).
Specifying a Lock LUN
A cluster lock disk, lock LUN, or Quorum Server, is required for two-node clusters. The lock must
be accessible to all nodes and must be powered separately from the nodes. See also “Cluster Lock
” (page 47); and see “Setting Up a Lock LUN” (page 178) for configuration information and
restrictions.
To specify a lock LUN in the cluster configuration file, enter the lock LUN information following
each node name, for example:
NODE_NAME hasupt21
NETWORK_INTERFACE lan1
HEARTBEAT_IP 15.13.173.189
NETWORK_INTERFACE lan2
NETWORK_INTERFACE lan3
CLUSTER_LOCK_LUN /dev/dsk/c0t1d1
Specifying a Quorum Server
IMPORTANT: The following are standard instructions. For special instructions that may apply to
your version of Serviceguard and the Quorum Server see “Configuring Serviceguard to Use the
Quorum Server” in the latest version of the HP Serviceguard Quorum Server Version A.04.00
Release Notes, at http://www.hp.com/go/hpux-serviceguard-docs under HP Serviceguard
Quorum Server Software
A cluster lock LUN or Quorum Server is required for two-node clusters. To obtain a cluster
configuration file that includes Quorum Server parameters, use the -q option of the cmquerycl
command, specifying a Quorum Server hostname or IP address , for example (all on one line):
cmquerycl -q <QS_Host> -n ftsys9 -n ftsys10 -C <ClusterName>.conf
To specify an alternate hostname or IP address by which the Quorum Server can be reached, use
a command such as (all on one line):
cmquerycl -q <QS_Host> <QS_Addr> -n ftsys9 -n ftsys10 -C
<ClusterName>.conf
Enter the QS_HOST (IPv4 or IPv6), optional QS_ADDR (IPv4 or IPv6), QS_POLLING_INTERVAL,
and optionally a QS_TIMEOUT_EXTENSION; and also check the HOSTNAME_ADDRESS_FAMILY
194 Building an HA Cluster Configuration