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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
VernonWells's avatar
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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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Nov 22, 2016

For the first, I failed to include the data-group name. This should be:

    set attr [class lookup [HTTP::path] splash-page-assets]

You are also correct on the 

getfield
argument order. It turns out the error was cascading. I forgot to include the data-group name, but the parser complained instead about the 
getfield
order. That sometimes happens on parsing. I will attempt to fix this article with the corrected code. Thank you for pointing this out.