DescriptionThis article explains how the virtual servers HTTP health check are working.SolutionTo configure the health check navigate to policy and objects -> health check and then apply the profile.On the below screenshot there is a virtual server and two back end real servers.To make sure if the servers are up and running, configure some health check monitors is necessary.
On above screenshot the Health check has been enabled and the type is “HTTP” .
The URL is set to '/index.htm' while the matched content is set to 'Load'.
The Below screenshot explains the content of the web page (Real servers web page)
HTTP Response body (Virtual server 1).
Real server 1.
HTTP Response body (Virtual server 2).
Go to Monitor -> Load balance monitor and Virtual server 1 will be down.
HTTP health check has failed because back end server 1 (172.31.133.94) does not have the content 'Load', which is configured as Matched content in health check monitor.