Paul Querna wrote: > > > -There is an external programe (started like a piped log program) that > > does "active" health checking. Every x seconds it checks all the > > "origin" servers and records their status in shared memory. > > This is more or less what mod_backhand does. (it is more passive, > waiting for a active server to send out a multicast or an ethernet > broadcast saying that it is alive, along with stats.) >
I've found that in most places, passive is more acceptable than active... But even so, many places don't like these sorts of broadcasts at all. There is a big resistance to agent-based solutions, especially when living on a web server. One reason why the "current" proxy lb is attractive is that it is quite self-contained, without packets being spewed all over the network. I'm not saying that a mod_backhand-ish solution isn't a good thing to add to our utility belt, but it should not stop the "basic" lb capability within mod_proxy. -- =========================================================================== Jim Jagielski [|] [EMAIL PROTECTED] [|] http://www.jaguNET.com/ "There 10 types of people: those who read binary and everyone else."
