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
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EmployeeIf the validation were placed in HTTP_REQUEST, it would execute on each received HTTP Request message, even though the positive condition is rare. When all pool members are down, LB_FAILED will be raised, and is the most common cause for this event.