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Forum Discussion

Gary_T_31565's avatar
Gary_T_31565
Icon for Nimbostratus rankNimbostratus
Dec 14, 2007

http monitor showing node up when down.

  Hi,     I don't want to log this as a support job without sense checking my understanding.     On a web server I have two sites (10.10.10.10 and 20.20.20.20). Second one is using hos...
management
monitoring
Deb_Allen_18's avatar
Deb_Allen_18
Historic F5 Account
Jan 11, 2008
Gary -

You should define a specific Receive string containing a string unique to a successful response. Without one, the HTTP monitor will match on any response, even an error page.

The easiest way to choose a receive string for an existing page is to "View Source" on it in your browser and find a phrase that will NOT appear on any error page or response. For example, if I wanted to run an HTTP monitor against www.f5.com, I could use the phrase 
secure, fast, and available
which appears in the meta headers for the page. If the server responds with an error page, it won't match & the pool member will be marked down.

/deb