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

Understanding Serviceguard Software Components
How the Package Manager Works
Chapter 3 73
The parameter is coded in the package ASCII configuration file:
# The default for AUTO_RUN is YES. In the event of a
# failure, this permits the cluster software to transfer the
package
# to an adoptive node. Adjust as necessary.
AUTO_RUN YES
A package switch involves moving packages and their associated IP
addresses to a new system. The new system must already have the same
subnet configured and working properly, otherwise the packages will not
be started. With package failovers, TCP connections are lost. TCP
applications must reconnect to regain connectivity; this is not handled
automatically. Note that if the package is dependent on multiple subnets,
all of them must be available on the target node before the package will
be started.
The switching of relocatable IP addresses is shown in Figure 3-5 and
Figure 3-6. Figure 3-5 shows a two node cluster in its original state with
Package 1 running on Node 1 and Package 2 running on Node 2. Users
connect to node with the IP address of the package they wish to use.
Each node has a stationary IP address associated with it, and each
package has an IP address associated with it.