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.

MONITOR_PACKAGE_NAME ccmonpkg

MONITOR_INTERVAL 5 MINUTES...

CLUSTER_EVENT LACluster/UNREACHABLE

CLUSTER_ALERT 1 MINUTE

NOTIFICATION CONSOLE

"1 Minute Alert: LACluster Unreachable"

CLUSTER_ALERT

2 MINUTES

NOTIFICATION CONSOLE

"2 Minute Alert: LACLuster Still Unreachable"

CLUSTER_ALRAM

3 MINUTES

NOTIFICATION CONSOLE

"ALARM: LACluster Unreachable after 3 Minutes: Recovery Enabled"

The following sequence could provide meaningful notifications, since a change of state is possible between notification intervals:

MONITOR_PACAGE_NAME

ccmonpkg

MONITOR_INTERVAL

1 minute

...

 

 

CLUSTER_EVENT

LACluster/UNREACHABLE

CLUSTER_ALERT

3 MINUTES

NOTIFCATION CONSOLE

 

"5 Minute Alert: LACluster Still Unreachable

CLUSTER_ALARM

10

MINUTES

NOTIFICATION CONSOLE

"ALARM: LACluster Unreachable after 10 Minutes: Recovery Enabled"

NOTE: The notification intervals should be multiples of the monitor interval.

The following is a sample Continentalclusters configuration file with two recovery pairs. Both cluster1 and cluster2 are configured to have cluster3 as their recovery cluster for package pkg1 and pkg2, and cluster3 is configured to have cluster1 as its recovery cluster for pkg3.

#Section1: Cluster Information CONTINENTAL_CLUSTER_NAME sampleCluster CONTINENTAL_CLUSTER_STATE_DIR /opt/cmconcl/statedir

CLUSTER_NAMEcluster1

86 Designing Continentalclusters