RE: Doesn't work for a very few visitors

Hi Willy,

What's strange is traffic still appears normal, and is, for probably at least 99% of the visitors. Logged traffic remains about normal (hundreds of thousands of visitors a day). I just get a few e-mails asking why the site has been down for days or when it will be back. But I cannot recreate the problem. And I know there are probably people who just don't e-mail and, unfortunately, don't come back.

Here is the config file with the IP addresses changed, pretty much the default that comes with it...

# this config needs haproxy-1.1.28 or haproxy-1.2.1

global

        log 127.0.0.1   local0
        log 127.0.0.1   local1 notice
        #log loghost    local0 info
        maxconn 4096
        chroot /var/lib/haproxy
        user haproxy
        group haproxy
        daemon
        #debug
        #quiet

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        retries 3
        option  redispatch
        maxconn 2000
        contimeout      5000
        clitimeout      50000
        srvtimeout      50000

listen  HTTP 12.34.56.78:80
        mode    http
        balance roundrobin
        server  httpA 98.76.54.32:80 check inter 35000 rise 3 fall 3
        server  httpB 23.45.67.89:80 check inter 35000 rise 3 fall 3
        source  10.176.192.82

listen stats :2680
        mode http
        stats uri /

--
 Joe Torsitano


-----Original Message-----
From: Willy Tarreau [mailto:w#1wt.eu] 
Sent: Thursday, December 17, 2009 9:46 PM
To: Joe Torsitano
Cc: haproxy#formilux.org
Subject: Re: Doesn't work for a very few visitors

Hi,

On Thu, Dec 17, 2009 at 02:07:41PM -0800, Joe Torsitano wrote:


> Whenever I turn on HAProxy everything appears to be working great.

However


> I always get two or three e-mails from people who ask when the site is

going


> to be back up.  They say the site can no longer be found in their browser,

> even people who have it bookmarked.  They say it's like the server is

down.


> As soon as I switch off HAProxy and have the requests delivered directly

> they say everything is fine again.  Unfortunately I've never been able to

> recreate it on almost a dozen computers I try.  I'm attempting to use

> HAProxy in HTTP mode with Apache servers.  Using the Apache load balancer

> works.  Any ideas?


not at all, sounds very strange. Are you sure you don't have
too short client-side timeouts, which would be compatible with
your local computers but not with remote clients (eg: 10 ms) ?

Otherwise, please post your config (you can mask your IPs if
you want).

Willy
 

__________ Information from ESET Smart Security, version of virus signature
database 4700 (20091218) __________

The message was checked by ESET Smart Security.

http://www.eset.com