Specifications

Communication Paths Going Up and Down

As a result of this problem, your users may have trouble creating or changing resources during the

frozen interval.

To adjust the system date/time counters backward:

1. Go to single-user mode (which stops LifeKeeper).

2. Change the date or time backwards.

3. Go back to multi-user mode.

Restart LifeKeeper. The operation builds a new ha_xref_tbl with the new current time so that

the operation can continue.

Note: Changing the timezone (TZ shell variable) or changing from Daylight to Standard time does not

affect LifeKeeper. Linux holds all time values as an absolute count of seconds from January 1, 1970

and changing the timezone or daylight/standard time is simply an ASCII interpretation of the absolute

seconds counter. The counter itself is not changed.

Communication Paths Going Up and Down

If you find the communication paths failing then coming back up repeatedly (the LifeKeeper GUI

showing them as Alive, then Dead, then Alive), the heartbeat tunables may not be set to the same

values on all servers in the cluster.

This situation is also possible if the tunable name is misspelled in the LifeKeeper defaults file

/etc/default/LifeKeeper on one of the servers.

Suggested Action

1. Shut down LifeKeeper on all servers in the cluster.

On each server in the cluster, check the values and spelling of the LCMHBEATTIME and

LCMNUMHBEATS tunables in /etc/default/LifeKeeper. Ensure that for each tunable, the

values are the same on ALL servers in the cluster.

3. Restart LifeKeeper on all servers.

Incomplete Resource Created

If the resource setup process is interrupted leaving instances only partially created, you must perform

manual cleanup before attempting to install the hierarchy again. Use the LifeKeeper GUI to delete any

partially-created resources.See Deleting a Hierarchy from All Servers for instructions. If the

hierarchy list does not contain these resources, you may need to use the ins_remove (see LCDI-

instances(1M)) and dep_remove (LCDI-relationship(1M)) to clean up the partial hierarchies.

Incomplete Resource Priority Modification

A hierarchy in LifeKeeper is defined as all resources associated by parent/child relationships. For

resources that have multiple parents, it is not always easy to discern from the GUI all of the root

248Troubleshooting