haproxy logging to syslog
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:
/etc/haproxy/haproxy.cfg
global
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
daemon
# 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
defaults
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
/etc/rsyslog.d
# 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
The default haproxy.conf
file provides clear instructions under the Global settings - global
. Here i am copy pasting it for you -
#--------------------------------------------------------------------- # Global settings #--------------------------------------------------------------------- global # 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:
-
Add below line to
/etc/rsyslog.d/haproxy.conf
-local2.* /var/log/haproxy.log
Enable syslogd logging on server -
# Provides UDP syslog reception $ModLoad imudp $UDPServerRun 514 $UDPServerAddress 127.0.0.1
Comment out this line from /etc/rsyslog.d
# Send HAProxy messages to a dedicated logfile
if $programname startswith 'haproxy' then /var/log/haproxy.log
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.
[edit]
After 3 years something has changed. Haproxy now creates a file called /etc/rsyslog.d/49-haproxy
. One of the lines in the file is:
$AddUnixListenSocket /var/lib/haproxy/dev/log
.
In this case, the chroot environment can use /dev/log