Managing HP Serviceguard A.11.20.10 for Linux, December 2012

All other characters are legal. The cluster name can contain
up to 39 characters.
CAUTION: Make sure that the cluster name is unique
within the subnets configured on the cluster nodes; under
some circumstances Serviceguard may not be able to detect
a duplicate name and unexpected problems may result.
In particular make sure that two clusters with the same name
do not use the same quorum server; this could result in one
of the clusters failing to obtain the quorum server’s
arbitration services when it needs them, and thus failing to
re-form.
HOSTNAME_ADDRESS_FAMILY Specifies the Internet Protocol address family to which
Serviceguard will try to resolve cluster node names and
Quorum Server host names. Valid values are IPV4, IPV6,
and ANY. The default is IPV4.
• IPV4 means Serviceguard will try to resolve the names
to IPv4 addresses only.
• IPV6 means Serviceguard will try to resolve the names
to IPv6 addresses only.
• ANY means Serviceguard will try to resolve the names
to both IPv4 and IPv6 addresses.
IMPORTANT: See “About Hostname Address Families:
IPv4-Only, IPv6-Only, and Mixed Mode” (page 83) for
important information. See also the latest Serviceguard
release notes at
http://www.hp.com/go/linux-serviceguard-docs.
QS_HOST The fully-qualified hostname or IP address of a host system
outside the current cluster that is providing quorum server
functionality. It must be (or resolve to) an IPv4 address on
Red Hat 5. On SLES 11, it can be (or resolve to) either an
IPv4 or an IPv6 address if HOSTNAME_ADDRESS_FAMILY
is set to ANY, but otherwise must match the setting of
HOSTNAME_ADDRESS_FAMILY. This parameter is used
only when you employ a quorum server for tie-breaking
services in the cluster. You can also specify an alternate
address (QS_ADDR) by which the cluster nodes can reach
the quorum server.
For more information, see “Cluster Lock Planning” (page 80)
and “Specifying a Quorum Server” (page 149). See also
“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 (Select HP Serviceguard Quorum
Server Software).
IMPORTANT: See also“About Hostname Address Families:
IPv4-Only, IPv6-Only, and Mixed Mode” (page 83) for
important information about requirements and restrictions
in an IPv6–only cluster.
4.7 Cluster Configuration Planning 87