Managing HP Serviceguard for Linux, Tenth Edition, September 2012

IMPORTANT: See also“About Hostname Address
Families: IPv4-Only, IPv6-Only, and Mixed Mode”
(page 100) for important information about
requirements and restrictions in an IPv6–only
cluster.
Can be changed while the cluster is running; see
“What Happens when You Change the Quorum
Configuration Online” (page 43) for important
information.
QS_ADDR An alternate fully-qualified hostname or IP address
for the quorum server. It must be (or resolve to) an
IPv4 address on Red Hat 5. On SLES 10 and 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 if you use a quorum server and want
to specify an address on an alternate subnet by
which it can be reached. On SLES 10 and 11,
the alternate subnet need not use the same
address family as QS_HOST if
HOSTNAME_ADDRESS_FAMILY is set to ANY. For
more information, see “Cluster Lock Planning”
(page 96) and “Specifying a Quorum Server”
(page 182).
IMPORTANT: 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.
Can be changed while the cluster is running; see
“What Happens when You Change the Quorum
Configuration Online” (page 43) for important
information.
QS_POLLING_INTERVAL The time (in microseconds) between attempts to
contact the quorum server to make sure it is
running. Default is 300,000,000 microseconds
106 Planning and Documenting an HA Cluster