Managing Serviceguard 12th Edition, March 2006

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4 161
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 A.11.17 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. In the ASCII cluster
configuration file, this parameter is VOLUME_GROUP.
The volume group name can have up to 39 characters.
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 “Editing Security
Files” on page 190.
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 click Serviceguard Extension for
Faster Failover.
NETWORK_FAILURE_DETECTION
When there is a primary and a standby network card,
Serviceguard needs to determine when a card has
failed, so it knows whether to fail traffic over to the
other card. To detect failures, Serviceguard’s Network
Manager monitors both inbound and outbound traffic.
The Network Manager will mark the card DOWN and