Managing HP Serviceguard for Linux, Tenth Edition, September 2012

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 183). It
will also validate IP Monitor polling targets; see “Monitoring LAN Interfaces and Detecting
Failure: IP Level” (page 75), and POLLING_TARGET under “Cluster Configuration
Parameters ” (page 103).
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.docs.hp.com -> High
Availability -> Quorum Server.
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
182 Building an HA Cluster Configuration