Managing Serviceguard 14th Edition, June 2007

Building an HA Cluster Configuration
Configuring the Cluster
Chapter 5238
# HEARTBEAT_INTERVAL. If you are experiencing quorum server
# timeouts, you can adjust these parameters, or you can include
# the QS_TIMEOUT_EXTENSION parameter.
#
# For example, to configure a quorum server running on node
# "qshost" with 120 seconds for the QS_POLLING_INTERVAL and to
# add 2 seconds to the system assigned value for the quorum
server
# timeout, enter:
#
# QS_HOST qshost
# QS_POLLING_INTERVAL 120000000
# QS_TIMEOUT_EXTENSION 2000000
Enter the QS_HOST, QS_POLLING_INTERVAL and optionally a
QS_TIMEOUT_EXTENSION.
Identifying Heartbeat Subnets
The cluster configuration file includes entries for IP addresses on the
heartbeat subnet. HP recommends that you use a dedicated heartbeat
subnet, and configure heartbeat on other subnets as well, including the
data subnet.
The heartbeat must be on an IPv4 subnet and must employ IPv4
addresses. An IPv6 heartbeat is not supported.
NOTE If you are using Version 3.5 Veritas CVM disk groups, you can configure
only a single heartbeat subnet, which should be a dedicated subnet. Each
system on this subnet must have standby LANs configured, to ensure
that there is a highly available heartbeat path.
Versions 4.1 and later allow multiple heartbeats, and require that you
configure either multiple heartbeats or a single heartbeat with a
standby.
CVM is not supported on all systems; see “About Veritas CFS and CVM
from Symantec” on page 29.