Hello folks !
I use haproxy 1.4.15 for loadbalancing many virtual servers on a pair of
XenServer, and it works beautifully.
Two of these VMs are FTP servers, more precisely PureFTPD running on
Ubuntu 10.04 server.
It works perfectly, however, in a recempt attempt to duplicate the
architecture for another customer,
I tried versions 1.4.19 and 1.5-dev7, and both of them failed to work
with PureFtpd :
- From any VM I can ftp the pureftpd VMs (persee1 & 2) without any
problem
- If I ftp the HAProxy VM Ip, I don't even get a ftp banner.
- Using tcpdump on the ftp vm, I can see that HAProxy sends a packet to
pureftpd, which responds, but
it doesn't seem to be forwarded.
Again, everything works with 1.4.15.
Is this a known problem ?
Sorry I cannot provide more details, I encountered the issue weeks ago
and don't have time to investigate
in it for now (and I didn't write thnings down - shame on me) but I
wanted to let you know of a potential bug.
Best Regards,
Jérémy Longo
Kernel : 2.6.32-38-generic #83-Ubuntu SMP
Working haproxy :
HA-Proxy version 1.4.15 2011/04/08
Build options :
TARGET = linux26
CPU = generic
CC = gcc
CFLAGS = -O2 -g -fno-strict-aliasing
OPTIONS = USE_PCRE=1
NON-Working haproxy :
HA-Proxy version 1.4.19 2012/01/07
& HA-Proxy version 1.5-dev7 2011/09/10
Build options :
TARGET = linux26
CPU = generic
CC = gcc
CFLAGS = -O2 -g -fno-strict-aliasing
OPTIONS = USE_STATIC_PCRE=1
Relevant Haproxy configuration :
global
log 127.0.0.1 local0 notice
maxconn 100000
ulimit-n 300000
nbproc 1
daemon
spread-checks 5
stats socket /var/run/haproxy.sock mode 0600 level admin
defaults
log global
mode http
retries 3
option redispatch
timeout connect 5s
timeout client 50s
timeout server 50s
listen admin_page 172.20.0.3:3307
mode http
balance roundrobin
stats uri /
listen statssummary_page 172.20.0.3:3308
mode http
stats hide-version
stats uri /
stats scope pureftpd_backend
## PUREFTPD
frontend pureftpd
mode tcp
timeout client 1h
bind publicip:21,publicip:990,publicip:50000-50400
default_backend pureftpd_backend
backend pureftpd_backend
mode tcp
timeout server 1h
server persee1 172.16.0.11 check port 21 inter 10s rise 1 fall 2
server persee2 172.16.0.12 check port 21 inter 10s backup
