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#---------------------------------------------------------------------

# 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 info

    chroot      /var/lib/haproxy

    pidfile     /var/run/haproxy.pid

    maxconn     40000

    user        haproxy

    group       haproxy

    daemon

    # turn on stats unix socket

    stats socket /var/lib/haproxy/stats

#---------------------------------------------------------------------

# common defaults that all the 'listen' and 'backend' sections will

# use if not designated in their block

#---------------------------------------------------------------------

defaults

    mode                    http

    log                     global

    option                  httplog

    option                  dontlognull

    option http-server-close

    option forwardfor       except 127.0.0.0/8

    option                  redispatch

    retries                 3

    timeout http-request    10s

    timeout queue           1m

    timeout connect         10s

    timeout client          1m

    timeout server          1m

    timeout http-keep-alive 10s

    timeout check           10s

    maxconn                 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

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SYSLOGD_OPTIONS=""

改成

SYSLOGD_OPTIONS="-r"

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

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systemctl restart rsyslog