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

Troubleshooting Your Cluster
Monitoring Hardware
Chapter 8324
Refer to the EMS Hardware Monitors User’s Guide (B6191-90020) for
additional information.
Hardware Monitors and Persistence Requests
When hardware monitors are disabled using the monconfig tool,
associated hardware monitor persistent requests are removed from the
persistence files. When hardware monitoring is re-enabled, the monitor
requests that were initialized using the monconfig tool are re-created.
However, hardware monitor requests created using Serviceguard
Manager, or established when Serviceguard is started, are not
re-created. These requests are related to the psmmon hardware monitor.
To re-create the persistence monitor requests, halt Serviceguard on the
node, and then restart it. This will re-create the persistence monitor
requests.
Using HP Predictive Monitoring
In addition to messages reporting actual device failure, the logs may
accumulate messages of lesser severity which, over time, can indicate
that a failure may happen soon. One product that provides a degree of
automation in monitoring is called HP Predictive, which gathers
information from the status queues of a monitored system to see what
errors are accumulating. This tool will report failures and will also
predict failures based on statistics for devices that are experiencing
specific non-fatal errors over time. In a Serviceguard cluster, HP
Predictive should be run on all nodes.
HP Predictive also reports error conditions directly to an HP Response
Center, alerting support personnel to the potential problem. HP
Predictive is available through various support contracts. For more
information, contact your HP representative.