Hello, Can you see failed check in your stats page ? Because if one of your server goes down, then came back, haproxy will probably send the request to another server.
See "map-type" parameter in http://haproxy.1wt.eu/download/1.4/doc/configuration.txt "consistent" one will be good for you. Hervé. On Wed, 25 Aug 2010 18:00:01 +0200 Markus Fröhlich <[email protected]> wrote: > hi! > > I'm using HA-Proxy version 1.4.8 2010/06/16 on SLES11 SP1 x64 > my backend servers are three squid proxy servers to cache images. > > what I want: > I'd like to cache each picture ONLY on one proxy server for following > reasons: > * it makes no sense to waste cache capacity and keep the same > picture in cache on all three proxy backends > * no different versions of the same picture, when the picture got > updated and the caching times of the proxies are different - so it is > possible, that one proxy shows the old picture and the others the new > one > > so I use "balance uri" option > therefor a hash of the URI will be generated and haproxy will send > the same URI / hash always to the same backend proxy assumed the > backend server dosnt go down or squid isnt aviable. when I watch the > squid access logs of the backend proxies, it works sometimes and > sometimes I get the same picture (same URI) from an other proxy. why > isnt it persistant?! > > the testet URIs look like this: > http://images5.<domain>.<TLD>/image_data/02/29/73/69.crop-100.80-80-80-80.orig.jpg?chk=340293d69ffc5d944a449891869f1a74 > http://images5.<domain>.<TLD>/image_data/02/53/56/97.crop-100.120-120-120-120.orig.jpg?chk=7914ffc6a00d4702bdc3cdbd83bdbca9 > http://images5.<domain>.<TLD>/image_data/dynimage/3b267cf984acb80a117454f0f6ae42df/1238e767062f89acba5faa86d994a789.gif?chk=793ecb49681273cbd9667578acbe4951 > > > my haproxy.cfg: > global > node vvx-haproxy-03 > user haproxy > group haproxy > daemon > maxconn 256 > > defaults > mode http > option clitcpka > timeout connect 5000ms > timeout client 50000ms > timeout server 50000ms > option httpchk > http-check send-state > > frontend http-in > log /dev/log local0 debug > option httplog > option logasap > option socket-stats > bind x.x.x.x:80 > acl invalid_src src 0.0.0.0/7 224.0.0.0/3 > acl local_dst hdr(host) -i localhost > block if invalid_src || local_dst > default_backend proxy1 > > backend proxy1 > log /dev/log local1 debug > option httplog > option tcplog > > stats enable > stats hide-version > stats scope . > stats uri /xadmin?stats > stats realm HAproxy\ Statistics > stats auth xadmin:<pwd> > stats show-legends > fullconn 10000 > balance uri len 128 depth 8 > option srvtcpka > > server p-01 10.x.x.x:80 maxconn 32 check inter 10000 > server p-02 10.x.x.x:80 maxconn 32 check inter 10000 > server p-03 10.x.x.x:80 maxconn 32 check inter 10000 > > > > -- Hervé COMMOWICK, EXOSEC (http://www.exosec.fr/) ZAC des Metz - 3 Rue du petit robinson - 78350 JOUY EN JOSAS Tel: +33 1 30 67 60 65 - Fax: +33 1 75 43 40 70 mailto:[email protected]
