Forum Discussion
speachey
Cirrus
Cirrusdefault http monitor (v14.1.2.2) causing "HTTP/1.1 400 Bad Request" on pool member
the f5 marks the pool member as up, but sys admins are complaining about excessive "bad request" logs caused by the default f5 http monitor of a server. vip service port: 80 pool listen port...
Hi speachey,
This is normally caused when the request doesn't comply with HTTP v1.1 standards, i.e. missing Host header. Considering this is the default monitor it's likely that your web server is expecting a more specific request.
Two helpful ways to troubleshoot this issue is to enable logging on the pool member in question, and/or mimic the health monitor using cURL - see the man page for more details.
Let me know if that helps.
Kind regards
Ben
Grumpy_CatCirrus
CirrusHi speachey,
This is normally caused when the request doesn't comply with HTTP v1.1 standards, i.e. missing Host header. Considering this is the default monitor it's likely that your web server is expecting a more specific request.
Two helpful ways to troubleshoot this issue is to enable logging on the pool member in question, and/or mimic the health monitor using cURL - see the man page for more details.
Let me know if that helps.
Kind regards
Ben