Managing HP Serviceguard A.11.20.20 for Linux, May 2013

information, see “Cluster Lock Planning” (page 84) and
“Specifying a Quorum Server” (page 155).
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 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 (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 43) 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 43) 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
the documents listed under “Cross-Subnet Configurations”
(page 27) for more information.
You can define multiple SITE_NAMEs. SITE_NAME entries
must precede any NODE_NAME entries. See also SITE.
IMPORTANT: SITE_NAME must be 39 characters or less,
and are case-sensitive. Duplicate SITE_NAME entries are
not allowed.
NODE_NAME The hostname of each system that will be a node in the
cluster.
CAUTION: Make sure that the node 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.
4.7 Cluster Configuration Planning 93