Managing Serviceguard 13th Edition, February 2007

Understanding Serviceguard Software Components
How the Package Manager Works
Chapter 386
• Physical volume status
•System load
• Number of users
• File system utilization
•LAN health
Once a monitor is configured as a package resource dependency, the
monitor will notify the package manager if an event occurs showing that
a resource is down. The package may then be failed over to an adoptive
node.
The EMS HA Monitors can also be used to report monitored events to a
target application such as OpenView IT/Operations for graphical display
or for operator notification. Refer to the manual Using High Availability
Monitors (B5736-90022) for additional information.
Choosing Package Failover Behavior
To determine failover behavior, you can define a package failover policy
that governs which nodes will automatically start up a package that is
not running. In addition, you can define a failback policy that determines
whether a package will be automatically returned to its primary node
when that is possible.
The following table describes different types of failover behavior and the
settings in Serviceguard Manager or in the package configuration file
that determine each behavior.