iRules Recipe 4: Static Maintenance Page

The Problem You wish to provide a static maintenance splash page when all members of a pool serving a Virtual Server are currently down or disabled. The Configuration # cat /var/tmp/splash-...
Updated Jun 06, 2023
Version 2.0
application delivery
iRules
LTM
JG's avatar
JG
Icon for Cumulonimbus rankCumulonimbus
Nov 18, 2016

There are limitations with LB_FAILED, for the ifile must be short enough to fit in one data packet (sol9456: Using the HTTP::respond iRule command in the LB_FAILED event may result in truncated responses).

 

Also it might be appropriate to use the "503" HTTP status code in the response; search engines will not index the maintenance message with that.