Hi, What is weird is that your Application server does not deliver the same object on both servers to a local connection or a remote connection... Why are you using 2 different ports?? Could you log the response Content-Length header?
>From your log line, it sounds related to a network or server issue... cheers On Tue, Jan 8, 2013 at 1:38 PM, William Lewis <[email protected]> wrote: > Further to this I've found if I add a large comment at the bottom of the file > to increase the file size then the problem goes away. > > It might be that xlightweb (it's a rather rubbish container but I'm stuck > with it) is doing something weird for this file, but if I remove the haproxy > layer and have the ip balancer talk directly to the web servers the problem > doesn't manifest in a browser. > > > On Jan 8, 2013, at 11:20 AM, William Lewis <[email protected]> wrote: > >> Hi, >> >> I'm going slightly crazy trying to work out this problem and I hope someone >> can help. >> >> I have 2 hosts, each host is running an instance of haproxy and an instance >> of a java web server xlightweb. Between these hosts and the outside world >> there is a dumb round robin ip balancer that holds no state. >> >> Each of the haproxy are configured to balance between both the localhost >> instance of the web server and the instance on the other host. >> >> (This is a currently a proof of concept system before I deploy haproxy on >> its own machines in front of many more web servers) >> >> >> The problem that I'm having is that serving a particular javascript file is >> failing when the haproxy on host A is fetching it from host B and when the >> haproxy on host B is fetching it from host A. >> It always affects the same javascript file only, and there are many more >> javascript files in use which are being served fine. >> >> Logs from haproxy host A >> >> be/host_a 1/0/1/13/18 200 16389 --NI 1/1/0/0/0 0/0 {Mozilla/5.0(iPad; U; >> CPU OS 6_0 like Mac OS X|} {} "GET /app/js/libs/jq.mobi.js HTTP/1.1" >> be/host_b 4640/0/0/7/4648 200 14955 SDNI 0/0/0/0/0 0/0 {Mozilla/5.0(iPad; >> U; CPU OS 6_0 like Mac OS X|} {} "GET /app/js/libs/jq.mobi.js HTTP/1.1" >> >> Logs from haproxy host B >> >> be/host_a 0/0/1/13/17 200 14956 SDNI 0/0/0/0/0 0/0 {Mozilla/5.0(iPad; U; >> CPU OS 6_0 like Mac OS X|} {} "GET /app/js/libs/jq.mobi.js HTTP/1.1" >> be/host_b 0/0/0/4/5 200 16388 --NI 1/1/0/1/0 0/0 {Mozilla/5.0(iPad; U; CPU >> OS 6_0 like Mac OS X|} {} "GET /app/js/libs/jq.mobi.js HTTP/1.1" >> >> >> My haproxy configuration is this >> >> global >> daemon >> quiet >> maxconn 200000 >> pidfile /local/migwproxy/haproxy.pid >> uid 60003 >> gid 1001 >> chroot /local/migwproxy/run >> log 127.0.0.1 local0 >> log 127.0.0.1 local1 notice >> log-tag migwproxy >> >> defaults >> log global >> >> balance roundrobin >> mode http >> monitor-uri /migwproxy >> http-check send-state >> >> retries 3 >> >> timeout connect 6000 >> timeout client 1020000 >> timeout server 1020000 >> timeout http-request 6000 >> >> option forwardfor except 127.0.0.1 >> option http-server-close >> option httplog >> option log-health-checks >> option log-separate-errors >> option redispatch >> option tcpka >> >> frontend external >> bind *:9000 >> >> maxconn 200000 >> >> # Capture User-Agent and X-Forward-For headers to the log >> capture request header User-agent len 45 >> capture request header X-Forwarded-For len 15 >> # Capture any 302 redirects to the log >> capture response header Location len 20 >> >> >> # We keep track of connection rates and connection numbers >> stick-table type ip size 200k expire 2m store conn_rate(3s),conn_cur >> # And we do this per source address >> tcp-request connection track-sc1 src >> >> acl source_rate_abuser sc1_conn_rate gt 200 >> acl source_connections_abuser sc1_conn_cur gt 3000 >> >> acl acl_photorating hdr(host) -i photorating.mshot.example.com -i >> photorating.mshoteu.example.com -i photorating.mshotus.example.com -i >> api.photorating.mshot.example.com -i api.photorating.mshoteu.example.com -i >> api.photorating.mshotus.example.com -i push.photorating.mshot.example.com -i >> push.photorating.mshoteu.example.com -i push.photorating.mshotus.example.com >> >> use_backend be if acl_photorating !source_rate_abuser || acl_photorating >> !source_connections_abuser >> use_backend be-slow if acl_photorating source_rate_abuser || >> acl_photorating source_connections_abuser >> >> >> backend be >> >> cookie ha-server-photorating insert domain .example.com >> >> server host_a 10.10.184.103:34025 cookie host_a check inter 5000 maxconn >> 500 >> server host_b 10.10.184.11:25117 cookie hosst_b check inter 5000 maxconn >> 500 >> >> backend be-slow >> >> cookie ha-server-photorating insert domain .example.com >> >> server host_a 10.10.184.103:34025 cookie host_a check inter 5000 maxconn >> 500 >> server host_b 10.10.184.11:25117 cookie hosst_b check inter 5000 maxconn >> 500 >> >> >> You can also see a live example here, http://netproteus.com/test.html >> >> >> Any insight, greatly appreciated. >> >> >> Will Lewis > >
