默认haproxy的日志是输出到系统syslog中，查看起来不是非常方便，为了更好的管理haproxy的日志，我们在生产环境中一般单独定义出来。需要将haproxy的info及notice日志分别记录到不同的日志文件中。

需要修改rsyslog配置，为了便于管理。将haproxy相关的配置独立定义到haproxy.conf，并放到/etc/rsyslog.d/下，rsyslog启动时会自动加载此目录下的所有配置文件。

默认的haproxy的配置文件如下

#---------------------------------------------------------------------
# Example configuration for a possible web application.  See the
# full configuration options online.
#
#   http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#---------------------------------------------------------------------#---------------------------------------------------------------------
# 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##    local2.*                       /var/log/haproxy.log#log         127.0.0.1 local2 infochroot      /var/lib/haproxypidfile     /var/run/haproxy.pidmaxconn     40000user        haproxygroup       haproxydaemon# turn on stats unix socketstats socket /var/lib/haproxy/stats#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaultsmode                    httplog                     globaloption                  httplogoption                  dontlognulloption http-server-closeoption forwardfor       except 127.0.0.0/8option                  redispatchretries                 3timeout http-request    10stimeout queue           1mtimeout connect         10stimeout client          1mtimeout server          1mtimeout http-keep-alive 10stimeout check           10smaxconn                 3000#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
#frontend  main *:5000
#    acl url_static       path_beg       -i /static /images /javascript /stylesheets
#    acl url_static       path_end       -i .jpg .gif .png .css .js
#
#    use_backend static          if url_static
#    default_backend             app#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
#backend static
#    balance     roundrobin
#    server      static 127.0.0.1:4331 check#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
#backend app
#    balance     roundrobin
#    server  app1 127.0.0.1:5001 check
#    server  app2 127.0.0.1:5002 check
#    server  app3 127.0.0.1:5003 check
#    server  app4 127.0.0.1:5004 check

其中日志的配置文件有关日志的配置是 log         127.0.0.1 local2 info

为了便于管理将haproxy相关的配置独立定义到haproxy.conf

配置方式

1.编辑“/etc/sysconfig/rsyslog”文件，将如下配置增加 -r 参数：

SYSLOGD_OPTIONS=""
改成
SYSLOGD_OPTIONS="-r"

2.编辑“/etc/rsyslog.conf”取消红框部分内容的注释，并在“local7.*”前面插入一行：

local2.*                /var/log/haproxy/haproxy.log

3.重启服务

重启 rsyslog

systemctl restart rsyslog