Specifications

Chapter 5: Configuring Equalizer Operation
50 Equalizer Installation and Administration Guide
The receive timeout is the time in seconds that Equalizer allows to receive a response from its
sibling before it times out. The connection timeout is the time in seconds allowed to establish
a TCP connection with its sibling. When either of these timeouts occur, that counts as one of
the strikeouts that occurs before the backup becomes the primary (three strikeouts must occur
before the backup takes the primary role). The probe interval. is the number of seconds
Equalizer waits between attempts to exchange status information.
Normally the default values are the best to use; however, if you notice the log files contain too
many false positives (messages that Equalizer has regained contact with its peer) you may want
to increase the values.
11. Click the commit & reboot button.
Errors are reported when a failover configurations is not successfully committed. If successful,
you will be prompted to reboot immediately. (Click the cancel button if you want to wait to
reboot the Equalizer.)
As Equalizer reboots:
• Watch the console for messages indicating that the Equalizer has successfully assumed
the primary or backup role.
• Check the event logs (View > Event Log in the Administrative Interface) for each
Equalizer to see that there are no related errors.
• Make sure that “Successfully assumed PRIMARY role” appears in the log for the
preferred primary system; the default backup system’s log should contain “Successfully
assumed BACKUP role”.
12. Repeat this procedure on the default backup Equalizer peer starting at Step 2.
13. If you have not already rebooted the two Equalizers as part of the above procedure, reboot the
preferred primary system first, then the backup system.
Modifying or Deleting a Failover Configuration
To make changes to a peer’s address or to delete a peer, select it from the peer drop-down. The
buttons modify and delete appear. You can make changes and click the modify button. To delete a
peer, click the delete button.
Using either the modify or delete button disables failover until you commit the changes. If the
system reboots while failover is disabled, it will start up in standalone mode.
If failover is disabled, the following appears at the top of the failover configuration screen:
Note – Both Equalizers must reboot in order for the failover configuration to work. Also note
that selecting the commit & reboot button on one of the peers does not cause the second
Equalizer (the peer that is not the system being configured) to reboot.
Note – If both systems in a failover pair start in standalone mode, each will assume the cluster
aliases and neither will assume a failover alias, resulting in nothing working. To resolve this type
of problem, configure and commit failover on both Equalizers, and then reboot both.