Apple Mac OS X Server (version 10.2.3 or later) - Manual (Page 611)

Tools for Advanced Administrators 611
m PreAcq–run before acquiring IP address from primary server
m PostAcq–run after acquiring IP address from primary server
m PreRel–run before relinquishing IP address back to primary server
m PostRel–run after relinquishing IP address back to primary server
You may have more than one script at each stage. The scripts in each prefix group are run in
the order their file names would appear in a directory listing using the
ls command.
For example, your secondary server may perform other services on the network such as
running a statistical analysis application and distributed image processing software. A
preacquisition script quits the running applications to free up the CPU for the Web server. A
postacquisition script starts the Web server. Once the primary is up and running again, a
prerelinquish script quits the Web server, and a postrelinquish script starts the image
processing and statistical analysis applications. The sequence of scripted events might look
like this:
Test (if present)
PreAcq10.StopDIP
PreAcq20.StopSA
PreAcq30.CleanupTmp
PostAcq10.StartTimer
PostAcq20.StartApache
PreRel10.StopApache
PreRel20.StopTimer
PostRel10.StartSA
PostRel20.StartDIP
PostRel30.MailTimerResultsToAdmin
Using Disk Journaling
Journaling is a technique that helps protect the integrity of HFS+ disks on Mac OS X
computers. It both prevents a disk from getting into an inconsistent state and expedites disk
repair if the server fails.
LL0395.Book Page 611 Wednesday, November 20, 2002 11:44 AM