On Fri, Oct 09, 2009 at 11:08:09AM -0700, Joe Williams wrote: > > I am attempting to limit the number of connections on a per host header > basis. Currently each host header has it's own ACL and backend. This > allows me to use maxconns and limit the number of connections per host > header even if the physical server is the same in both backends. > > ### > > frontend http_proxy > bind :8080 > > acl test1 hdr(host) test1.localhost:8080 > > acl test2 hdr(host) test2.localhost:8080 > > use_backend test1 if test1 > > use_backend test1 if test1 > > backend test1 > server test localhost:5984 maxconn 1000 > > backend test2 > server test localhost:5984 maxconn 1000 > > ### > > What I am wanting to do is use a single backend and decide the > connections per host header in the frontend. I took a look at dst_conn > and connslots and I don't think they will work for this as I am using a > single frontend (dst_conn) and attempting to use a single backend > (connslots). The idea would be "if HOSTHEADER has less than 1000 > connections forward to SOMEBACKEND". > > Is something like this possible?
I would have sworn there was something like that, but after checking the doc it appears I was wrong. I might have confused with be_sess_rate(). It's pretty simple to create a new ACL verb to match on the number of connections per backend, as it is for almost anything that appears on the stats page BTW. I'm adding that to the short-term TODO list. Willy
