Managing HP Serviceguard for Linux, Sixth Edition, August 2006

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4 105
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.
ACCESS CONTROL POLICIES
Specify three things for each policy: USER_NAME,
USER_HOST, and USER_ROLE. For Serviceguard
Manager, USER_HOST must be the name of the
Session node. Policies set in the configuration file of a
cluster and its packages must not be conflicting or
redundant. For more information, see “Username
Validation” on page 126.
MAX_CONFIGURED_PACKAGES
This parameter sets the maximum number of packages
that can be configured in the cluster. Default is 0,
which means that you must set this parameter if you
want to use packages. The minimum value is 0, and the
maximum value is 150.
Set this parameter to a value that is high enough to accommodate a
reasonable amount of future package additions without the need to bring
down the cluster to reset the parameter. However, be sure not to set the
parameter so high that memory is wasted. The use of packages requires
6MB plus about 80 KB of lockable memory on all cluster nodes.