I have a webserver that runs a number of virtualhost websites.
Every once in a while there will be a situation where the server load goes really high, or the network response is very slow on the webserver, and I would like to have a way of viewing the current activity on my varions virtualhosts, to see if a particular domain is perhaps responsible (ie. DOS, etc.)
What tools exist that can show me this information?
(note, I have about 10 IP addresses on the webserver, but all of them are shared between many domains/virtualhosts)