Managing HP Serviceguard for Linux, Seventh Edition, July 2007

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4112
NETWORK_POLLING_INTERVAL
The frequency at which the networks configured for
Serviceguard are checked. In the ASCII cluster
configuration file, this parameter is
NETWORK_POLLING_INTERVAL.
Default is 2,000,000 microseconds in the ASCII file.
Thus every 2 seconds, the network manager polls each
network interface to make sure it can still send and
receive information. Changing this value can affect
how quickly a network failure is detected.
The minimum value is 1,000,000 (1 second). The
maximum value recommended is 15 seconds, and the
maximum value supported is 30 seconds.
Can be changed while the cluster is running
(Access Control Policies, also known as Role Based Access)
Specify three things for each policy: USER_NAME,
USER_HOST, and USER_ROLE. Policies set in the
configuration file of a cluster and its packages must not
be conflicting or redundant. For more information, see
“Access Roles” on page 145.
MAX_CONFIGURED_PACKAGES
This parameter sets the maximum number of packages
that can be configured in the cluster. The minimum
value is 0, and the maximum value, which is also the
default, is 150.
Can be changed while the cluster is running
Cluster Configuration Worksheet
The worksheet on page 352 will help you to organize and record your
cluster configuration. Make as many copies as you need. Complete and
save this worksheet for future reference.