an easy health check question for the Pros

Hi Tony,

 

 

SOL4186 details the escape sequences you can use in monitor send and receive strings:

 

 

sol4186: Entering escape sequences in an HTTP health monitor's Send and Receive strings

 

https://support.f5.com/kb/en-us/solutions/public/4000/100/sol4186.html

 

 

If you don't specify an HTTP version in the send string, it defaults to HTTP 0.9. Some web servers will generate an error for this old version. Can you try this send string:

 

 

GET /page/status HTTP/1.0\r\nConnection: Close\r\n\r\n

 

 

Also, the monitoring daemon behavior for appending \r\n's to the send string has changed over the versions. If you're on 10.2.0+ the above example should work. If you're on a lower version, you will want to remove one or more \r\n's from the end of the send string:

 

 

sol10655: Change in Behavior: CR/LF characters appended to the HTTP monitor Send string

 

https://support.f5.com/kb/en-us/solutions/public/10000/600/sol10655.html

 

 

For general HTTP/S monitor info, you can check this SOL:

 

 

sol2167: Constructing HTTP requests for use with the HTTP or HTTPS application health monitor

 

https://support.f5.com/kb/en-us/solutions/public/2000/100/sol2167.html

 

 

And for troubleshooting info check this SOL:

 

 

SOL12531: Troubleshooting health monitors

 

https://support.f5.com/kb/en-us/solutions/public/12000/500/sol12531.html

 

 

Aaron