Designing a Continental Cluster
Building the Continentalclusters Configuration
Chapter 2 91
MONITORING_CLUSTER
CLUSTER_ALERT
NOTIFICATION
The TEXTLOG notification file should be placed under the
/var/opt/resmon/log directory. If any other directory is specified, an
error is reported by the cmapplyconcl and cmcheckconcl commands.
If you specify any other location for logging, the following error message
appears:
The target after textlog “ ” is not valid.
Please specify a file under /var/opt/resmon/log directory
If you upgraded Continentalclusters but are still using the old
configuration file, the textlog location is still specified as
/var/adm/cmconcl. As a result, the following error message appears:
The file path “s” specified for textlog is invalid.
The destination file must be under /var/opt/resmon/log directory.
Please change the path and restart the ccmon package.
IMPORTANT For TEXTLOG notification, the destination log file must be in the
/var/opt/resmon/log directory. If the destination file is not available in this
directory, Continentalclusters will not work properly.
Selecting Notification Intervals
The monitor interval determines the amount of time between distinct
attempts by the monitor to obtain the status of a cluster. The intervals
associated with notifications need to be chosen to work in combination
with the monitor interval to give a realistic picture of cluster events.
Some combinations are not useful. For example, notification intervals
that are smaller than the monitor interval do not make sense, and
should be avoided. In the following example, the cluster event will
always result in two alerts followed by an alarm. No change of state
could possibly be detected at the one-minute, two-minute and
three-minute intervals, because the monitor does not check for changes
until the monitor interval (5 minutes) has been reached.