Forum Discussion

Ken_B_50116's avatar
Ken_B_50116
Icon for Cirrostratus rankCirrostratus
Apr 10, 2017

GTM https health monitor has never worked

I'm trying to construct a health monitor in GTM 11.5.4 that looks for text on an https web page. I have never been able to get the monitor to go green so I am trying to troubleshoot it. gtm monit...
application delivery
BIG-IP
health monitor
TMSH
Kevin_K_51432's avatar
Kevin_K_51432
Historic F5 Account
Apr 12, 2017

One place to start troubleshooting is to remove the configured recv string. If that doesn't work, it might be helpful to review the following:

 

Proper request formatting:

 

https://support.f5.com/csp/article/K13397

 

Additional background on responses:

 

https://support.f5.com/csp/article/K13622

 

Enable debug logging:

 

https://support.f5.com/csp/article/K13768

 

Lastly, I've always recommended to let the LTM monitor the servers and report status to GTM via bigip monitor (if possible).

 

  • Kevin_K_51432's avatar
    Kevin_K_51432
    Historic F5 Account
    Apr 12, 2017

    I also forgot to mention, checking the 200 status using the -D option:

     

    curl --insecure -D file