I installed haproxy 1.5 via apt-get on ubuntu 14.04 via ppa:vbernat/haproxy-1.5 as per http://haproxy.debian.net/

The problem is it logging to /var/log/syslog instead of /var/log/haproxy.log

The setup is basically the default:


    log /dev/log    local0
    log /dev/log    local1 notice
    chroot /var/lib/haproxy
    stats socket /run/haproxy/admin.sock mode 660 level admin
    stats timeout 30s
    user haproxy
    group haproxy

    # Default SSL material locations
    ca-base /etc/ssl/certs
    crt-base /etc/ssl/private

    # Default ciphers to use on SSL-enabled listening sockets.
    # For more information, see ciphers(1SSL).
    ssl-default-bind-ciphers kEECDH+aRSA+AES:kRSA+AES:+AES256:RC4-SHA:!kEDH:!LOW:!EXP:!MD5:!aNULL:!eNULL
        ssl-default-bind-options no-sslv3

    log global
    mode    http
    option  httplog
    option  dontlognull
        timeout connect 5000
        timeout client  50000
        timeout server  50000
    errorfile 400 /etc/haproxy/errors/400.http
    errorfile 403 /etc/haproxy/errors/403.http
    errorfile 408 /etc/haproxy/errors/408.http
    errorfile 500 /etc/haproxy/errors/500.http
    errorfile 502 /etc/haproxy/errors/502.http
    errorfile 503 /etc/haproxy/errors/503.http
    errorfile 504 /etc/haproxy/errors/504.http


# Create an additional socket in haproxy's chroot in order to allow logging via
# /dev/log to chroot'ed HAProxy processes
$AddUnixListenSocket /var/lib/haproxy/dev/log

# Send HAProxy messages to a dedicated logfile
if $programname startswith 'haproxy' then /var/log/haproxy.log

Very tricky. :-) And here is the trick answer:

Notice the file in /etc/rsyslog.d It says to log haproxy into /var/log/haproxy.log But this will not take effect without restarting rsyslog:

service rsyslog restart
  • This works. Very simple. – abipc87 Mar 14 '17 at 10:47

The default haproxy.conf file provides clear instructions under the Global settings - global. Here i am copy pasting it for you -

# Global settings
    # to have these messages end up in /var/log/haproxy.log you will
    # need to:
    # 1) configure syslog to accept network log events.  This is done
    #    by adding the '-r' option to the SYSLOGD_OPTIONS in
    #    /etc/sysconfig/syslog
    # 2) configure local2 events to go to the /var/log/haproxy.log
    #   file. A line like the following can be added to
    #   /etc/sysconfig/syslog

In my case, for instance, i am running haproxy in CentOS 6.6, the same syslogd server and had to do the following to log to /var/log/haproxy.log:

  1. Add below line to /etc/rsyslog.d/haproxy.conf -

    local2.*                       /var/log/haproxy.log
  2. Enable syslogd logging on server -

# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514
  • 1
    In the last part, in the second step (Enable syslogd logging on server); you change these settings in the file /etc/rsyslog.conf. After that, restart rsyslog service: service rsyslog restart – Edenshaw Aug 4 '17 at 13:32

Comment out this line from /etc/rsyslog.d

# Send HAProxy messages to a dedicated logfile
if $programname startswith 'haproxy' then /var/log/haproxy.log
  • /etc/rsyslog.d is a directory, not a file. I'm not sure about 1.5 vs 1.6 differences on Ubuntu, but file /etc/rsyslog.d/49-haproxy.conf exists after install of 1.6. This has the following 3 lines: $AddUnixListenSocket /var/lib/haproxy/dev/log \n if $programname startswith 'haproxy' then /var/log/haproxy.log \n &~ (I added "\n" to denote the new lines) – fideloper Feb 7 '16 at 18:19

the main problem is that the chrooted haproxy won't be able to access /dev/log and in order to circumvent the issue you can either:

  • Enable syslog to listen on the UDP socket (usually on port 514) as described in the other messages
  • Create the directory /var/lib/haproxy/dev and mount /dev with bind option onto /var/lib/haproxy/dev

It works either ways.

  • you can also just add a log socket in the chroot. rsyslog can have multiple. (i'd give an example but it's been years) – Florian Heigl Oct 9 '16 at 0:41
  • This is no longer the case for newer versions of HAProxy, I am running version 1.5.4 with a chrooted configuration but logging to /dev/log. – Overbryd Apr 3 '17 at 8:03

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