Managing HP Serviceguard A.11.20.00 for Linux, June 2012

• If you don't use the -h option, Serviceguard will choose the best available configuration to
meet minimum requirements, preferring an IPv4 LAN over IPv6 where both are available. The
resulting configuration could be IPv4 only, IPv6 only, or a mix of both. You can override
Serviceguard's default choices by means of the HEARTBEAT_IP parameter, discussed under
“Cluster Configuration Parameters ” (page 80); that discussion also spells out the heartbeat
requirements.
• The-h and -c options are mutually exclusive.
Specifying the Cluster Lock
You can use the cmquerycl command line to specify a cluster lock LUN (-L lock_lun_device) or
quorum server (-q quorum_server [qs_ip2]). For more details, see cmquerycl (1m)manpage.
For more information, see “Specifying a Lock LUN” (page 140) and “Specifying a Quorum Server”
(page 140) sections.
Full Network Probing
-w full lets you specify full network probing, in which actual connectivity is verified among all
LAN interfaces on all nodes in the cluster, whether or not they are all on the same subnet.
NOTE: This option must be used to discover actual or potential nodes and subnets in a cross-subnet
configuration. See “Obtaining Cross-Subnet Information” (page 141). It will also validate IP Monitor
polling targets; see “Monitoring LAN Interfaces and Detecting Failure: IP Level” (page 58), and
POLLING_TARGET under “Cluster Configuration Parameters ” (page 80).
Specifying a Lock LUN
A cluster lock LUN or quorum server is required for two-node clusters. If you will be using a lock
LUN, be sure to specify the -L lock_lun_device option with the cmquerycl command. If the
name of the device is the same on all nodes, enter the option before the node names, as in the
following example (all on one line):
cmquerycl -v -L /dev/sda1 -n lp01 -n lp02 -C $SGCONF/lpcluster.conf
If the name of the device is different on the different nodes, specify each device file following each
node name, as in the following example (all on one line):
cmquerycl -v -n node1 -L /dev/sda1 -n node2 -L /dev/sda2 -C
$SGCONF/lpcluster.conf
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 HP Serviceguard Quorum Server Version A.04.00 Release
Notes, at http://www.hp.com/go/hpux-serviceguard-docs->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
140 Building an HA Cluster Configuration