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
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I am an F5 Solutions Architect for Service Providers in the Americas, focusing on Virtualization, SP protocols (Diameter, GTP, DNS) and programmability. Prior to joining F5, I worked as a Wi-Fi Network Engineer for a large U.S. public University, as an Operations Engineer, a network management Software Engineer, and as a Technical Trainer.
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VernonWells
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Jan 05, 2017

If 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.