Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Understanding Serviceguard Software Components
How Package Control Scripts Work
Chapter 386
How does the package start up, and what is its behavior while it is
running? Some of the many phases of package life are shown in
Figure 3-13.
Figure 3-13 Package Time Line Showing Important Events
The following are the most important moments in a package’s life:
1. Before the control script starts
2. During run script execution
3. While services are running
4. When a service, subnet, or monitored resource fails
5. During halt script execution
6. When the package or the node is halted with a Command
7. When the node fails
Before the Control Script Starts
First, a node is selected. This node must be in the package’s node list, it
must conform to the package’s failover policy, and any resources required
by the package must be available on the chosen node. One resource is the
subnet that is monitored for the package. If the subnet is not available,