HTTP Health Monitor that will disable pool members on http 5xx server Error Codes

Here are some articles about http monitors. Monitor default behavior is that if bigip receives the expected response the server is marked up. In order to mark a server down on an expected response enable the "Reverse" setting in the monitor settings.

 

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

 

Configuring an HTTP application health monitor to send a POST request

 

Content length limits for HTTP and HTTPS health monitors