We're running multiple sites on the same hardware, and we'd like to serve them using the same pool of application machines. However, one site periodically gets greatly-increased traffic, and so we'd like to reserve a small section of machines for only the other sites.
Is it possible to do something like this in HAProxy?
backend foo server app00 0.0.0.0 cookie app00 check server app01 0.0.0.0 cookie app00 check server app02 0.0.0.0 cookie app00 check backend bar server app03 0.0.0.0 cookie app03 check include foo
I realize that we could simply define the machines in multiple rules, but I'd rather avoid duplication if possible.