Managing Serviceguard Fifteenth Edition, reprinted May 2008

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4 167
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 is
150. The default value for Serviceguard is 150, and you
can change it without halting the cluster.
VOLUME_GROUP
The name of an LVM volume group whose disks are
attached to at least two nodes in the cluster. Such disks
are considered cluster-aware. The volume group
name can have up to 39 characters (bytes).
Access Control Policies (also known as Role Based Access)
For each policy, specify 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 “Setting up
Access-Control Policies” on page 243.
FAILOVER_OPTIMIZATION
You will only see this parameter if you have installed
Serviceguard Extension for Faster Failover, a
separately purchased product. You enable the product
by setting this parameter to TWO_NODE. Default is
disabled, set to NONE. For more information about the
product and its cluster-configuration requirements, go
to http://www.docs.hp.com -> High Availability
and choose Serviceguard Extension for Faster Failover.
NETWORK_FAILURE_DETECTION
The configuration file specifies one of two ways to
decide when a network interface card has failed:
• INOUT
• INONLY_OR_INOUT
The default is INOUT.
See “Monitoring LAN Interfaces and Detecting Failure”
on page 101 for more information.
Can be changed while the cluster is running.