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Chris_Olson_172's avatar
Chris_Olson_172
Icon for Nimbostratus rankNimbostratus
Feb 23, 2016
Solved

Why does my health monitor fail?

Created and new http health monitor but as soon as I apply it all servers in the pool are marked down.   ltm monitor http enterprise_heartbeat_mon { defaults-from http destination : in...
application delivery
BIG-IP
LTM
  • Josiah_39459's avatar
    Josiah_39459
    Feb 23, 2016

    HTTP/1.1 requires a Host header and your send string does not include one. Try:

     

    send "GET /Enterprise/login.cmdx\r\nHost: host.example.com\r\n\r\n"

     

Josiah_39459's avatar
Josiah_39459
Historic F5 Account

HTTP/1.1 requires a Host header and your send string does not include one. Try:

 

send "GET /Enterprise/login.cmdx\r\nHost: host.example.com\r\n\r\n"

 

Chris_Olson_172's avatar
Chris_Olson_172
Icon for Nimbostratus rankNimbostratus
Feb 23, 2016
Thank you very much for your insight. It is still failing though. Forgive my ignorance but what is the best way to test the strings from the F5? ltm monitor http enterprise_heartbeat_mon { defaults-from http destination *:* interval 5 ip-dscp 0 recv 200 send "GET /Enterprise/login.cmdx\r\nHost: nextrelease.sample.com\r\n\r\n" time-until-up 0 timeout 16 }