Hi Alessandro,
Le 27/07/2018 à 17:50, Alessandro Gherardi a écrit :
Hi,
I'm running haproxy 1.8.12 on Ubuntu 14.04. For some reason, haproxy
does not reuse connections to backend servers. For testing purposes, I'm
sending the same HTTP request multiple times over the same TCP connection.
The servers do not respond with Connection: close and do not close the
connections. The wireshark capture shows haproxy RST-ing the
connections a few hundred milliseconds after the servers reply. The
servers send no FIN nor RST to haproxy.
I tried various settings (http-reuse always, option http-keep-alive,
both at global and backend level), no luck.
The problem goes away if I have a single backend server, but obviously
that's not a viable option in real life.
Here's my haproxy.cfg:
global
#daemon
maxconn 256
defaults
mode http
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms
option http-keep-alive
timeout http-keep-alive 30s
http-reuse always
frontend http-in
bind 10.220.178.236:80
default_backend servers
backend servers
server server1 10.220.178.194:80 maxconn 32
server server2 10.220.232.132:80 maxconn 32
Any suggestions?
Well, you've not configured any persistence option nor any load
balancing algorithm. So, the default is to do a roundrobin between the 2
backend servers. If there's no traffic, it's very likely that there's no
connection to reuse when switching to the second server for the second
request.
Thanks in advance,
Alessandro
--
Cyril Bonté
