Managing HP Serviceguard A.11.20.20 for Linux, March 2014

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 on SLES 11; IPv4 only on Red Hat 5 and Red Hat 6), optional
QS_ADDR (IPv4 or IPv6 on SLES 11; IPv4 only on Red Hat 5 and Red Hat 6) ,
QS_POLLING_INTERVAL, and optionally a QS_TIMEOUT_EXTENSION; and also check the
HOSTNAME_ADDRESS_FAMILY setting, which defaults to IPv4. See the parameter descriptions
under Cluster Configuration Parameters (page 90).
For important information, see also “About Hostname Address Families: IPv4-Only, IPv6-Only, and
Mixed Mode” (page 88); and “What Happens when You Change the Quorum Configuration
Online” (page 43)
5.2.4 Obtaining Cross-Subnet Information
As of Serviceguard A.11.18 or later it is possible to configure multiple IPv4 subnets, joined by a
router, both for the cluster heartbeat and for data, with some nodes using one subnet and some
another. See “Cross-Subnet Configurations” (page 27) for rules and definitions.
You must use the -w full option to cmquerycl to discover the available subnets.
For example, assume that you are planning to configure four nodes, NodeA, NodeB, NodeC, and
NodeD, into a cluster that uses the subnets 15.13.164.0, 15.13.172.0, 15.13.165.0,
15.13.182.0, 15.244.65.0, and 15.244.56.0.
The following command
cmquerycl –w full –n nodeA –n nodeB –n nodeB –n nodeC –n nodeD
will produce the output such as the following:
Node Names: nodeA
nodeB
nodeC
nodeD
Bridged networks (full probing performed):
1 lan3 (nodeA)
lan4 (nodeA)
lan3 (nodeB)
lan4 (nodeB)
2 lan1 (nodeA)
lan1 (nodeB)
3 lan2 (nodeA)
lan2 (nodeB)
4 lan3 (nodeC)
lan4 (nodeC)
lan3 (nodeD)
lan4 (nodeD)
5 lan1 (nodeC)
lan1 (nodeD)
6 lan2 (nodeC)
lan2 (nodeD)
IP subnets:
IPv4:
156 Building an HA Cluster Configuration