Managing HP Serviceguard A.11.20.10 for Linux, December 2012

Can be changed while the cluster is running; see “What
Happens when You Change the Quorum Configuration
Online” (page 40) 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 and Red Hat 6. 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 if you use a quorum server and
want to specify an address on an alternate subnet by which
it can be reached. On SLES 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 80) and
“Specifying a Quorum Server” (page 149).
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.hp.com/go/
hpux-serviceguard-docs (Select HP Serviceguard Quorum
Server Software).
Can be changed while the cluster is running; see “What
Happens when You Change the Quorum Configuration
Online” (page 40) 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 (5 minutes). Minimum is
10,000,000 (10 seconds). Maximum is 2,147,483,647
(approximately 35 minutes).
Can be changed while the cluster is running; see “What
Happens when You Change the Quorum Configuration
Online” (page 40) for important information.
QS_TIMEOUT_EXTENSION You can use the QS_TIMEOUT_EXTENSION to increase the
time interval after which the current connection (or attempt
to connect) to the quorum server is deemed to have failed;
but do not do so until you have read the HP Serviceguard
Quorum Server Version A.04.00 Release Notes, and in
particular the following sections in that document: “About
the QS Polling Interval and Timeout Extension”, “Network
Recommendations”, and “Setting Quorum Server Parameters
in the Cluster Configuration File”.
Can be changed while the cluster is running; see “What
Happens when You Change the Quorum Configuration
Online” (page 40) for important information.
SITE_NAME The name of a site to which nodes (see NODE_NAME) belong.
Can be used only in a site-aware disaster recovery cluster,
which requires Metrocluster (additional HP software); see
88 Planning and Documenting an HA Cluster