Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

crowe's avatar
crowe
Icon for Cirrus rankCirrus
Apr 28, 2020

Allow Dev Team to disable pool members for maintenance

Hello,   I'm looking for a "least effort" method to allow developers to take pool members offline and add them back once maintenance is completed. We don't currently have anything setup via API t...
application delivery
big-ip
LTM
Samir's avatar
Samir
Icon for MVP rankMVP
Apr 28, 2020

Keep alive page is always best option to monitor application from LB with receive/disable string.​ Ask application to team to create simple page in server with OK string and configure http/https lb monitor accordingly.

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https://support.f5.com/csp/article/K2167

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T​hanks

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jaikumar_f5's avatar
jaikumar_f5
Icon for Noctilucent rankNoctilucent
Apr 29, 2020

Actually for the OP to not get confused. Dont just put OK as string. Because when the LTM monitor looks for a string, it looks for in the 1st 5120 bytes of data. So even a 200 OK will mark the pool members as UP. So be specific with your string to mark the server up and for draining with recv-disable. Cheers.