Appendix B 509
Administration of MC/ServiceGuard
MC/ServiceGuard and ITO
MC/ServiceGuard and ITO
MC/ServiceGuard (SG) provides a mechanism to start and stop
applications. This means that products running in an SG environment
must provide a package containing information about how to start and/or
stop the application. These packages are transfered between the SG
cluster nodes if a switch-over occurs. The package is referred to as the
ITO SG package in this section.
All SG cluster nodes have a hostname and a fixed IP address. In
addition, an SG package has a hostname and an IP address that can be
switched from one SG cluster node to another, together with the SG
package.
MC/ServiceGuard Support on the
Management Server
NNM 5.0 does not support MC/ServiceGuard directly. In other words, it
is not possible to create an NNM 5.0 ServiceGuard package. However, it
is possible to run NNM 5.0 independently on each SG cluster node.
NMM 6.0 can run as a ServiceGuard package if tightly integrated in the
ITO package. Since ITO 5.0, it is not supported to run NNM
independently on each SG cluster node when ITO is running as MC/SG
package.
NOTE It would help to let the netmon run for one day on each cluster node
before taking the ITO SG environment online. This enables the net to be
discovered.
The following figure illustrates the concepts behind running ITO in an
SG environment:
