1. [root@node1 haproxy]# vim /etc/rsyslog.conf     #为其添加日志功能
    2. # Provides UDP syslog reception
    3. $ModLoad imudp
    4. $UDPServerRun 514                   ------>启动udp，启动端口后将作为服务器工作
    5.  
    6. # Provides TCP syslog reception
    7. $ModLoad imtcp
    8. $InputTCPServerRun 514            ------>启动tcp监听端口
    9. local2.*                                                /var/log/haproxy.log
    10.  
    11. [root@node1 haproxy]# service rsyslog  restar
    12.  
    13. [root@LB haproxy]# vim haproxy.cfg
    14.  
    15. log         127.0.0.1 local2           --------->在global端中添加此行
    16.  

    2. 一个最简单的http服务的配置：

    1. frontend webser 
    2.         log 127.0.0.1 local3 
    3.         option forwardfor
    4.         bind  *:80
    5.         default_backend         app 
    6. backend app 
    7.         cookie node insert nocache
    8.         balance roundrobin
    9.         server  app1 192.168.1.111:80 check  cookie  node1    intval 2 rise 1 fall 2
    10.         server  app2 192.168.1.112:80 check  cookie  node2    intval 2 rise 1 fall 2
    11.         server  backup 127.0.0.1:8010  check  backup
    12.  
    13. listen statistics
    14.         bind *:8009                           # 自定义监听端口
    15.         stats enable                          # 启用基于程序编译时默认设置的统计报告
    16.         stats auth admin:admin        # 统计页面用户名和密码设置
    17.         stats uri  /admin?stats          # 自定义统计页面的URL，默认为/haproxy?stats
    18.         stats refresh 30s                   # 统计页面自动刷新时间
    19.         stats admin if TRUE              #如果认证通过就做管理功能，可以管理后端的服务器
    20.         stats realm Hapadmin          # 统计页面密码框上提示文本，默认为Haproxy\ Statistics

    4. 动静分离示例：

    1. #---------------------------------------------------------------------
    2. # Global settings
    3. #---------------------------------------------------------------------
    4. global
    5.     # to have these messages end up in /var/log/haproxy.log you will
    6.     # need to:
    7.     #
    8.     # 1) configure syslog to accept network log events.  This is done
    9.     #    by adding the '-r' option to the SYSLOGD_OPTIONS in
    10.     #    /etc/sysconfig/syslog
    11.     #
    12.     # 2) configure local2 events to go to the /var/log/haproxy.log
    13.     #   file. A line like the following can be added to
    14.     #   /etc/sysconfig/syslog
    15.     #
    16.     #    local2.*                       /var/log/haproxy.log
    17.     #
    18.     log         127.0.0.1 local2
    19.  
    20.     chroot      /var/lib/haproxy
    21.     pidfile     /var/run/haproxy.pid
    22.     maxconn     4000
    23.     user        haproxy
    24.     group       haproxy
    25.     daemon
    26.  
    27. defaults
    28.     mode                    http
    29.     log                     global    
    30.     option                  httplog
    31.     option                  dontlognull
    32.     option http-server-close
    33.     option forwardfor       except 127.0.0.0/8
    34.     option                  redispatch
    35.     retries                 3
    36.     timeout http-request    10s
    37.     timeout connect         10s
    38.     timeout client          1m
    39.     timeout server          1m
    40.     timeout http-keep-alive 10s
    41.     timeout check           10s
    42.     maxconn                 30000
    43.  
    44. listen stats
    45.     mode http
    46.     bind 0.0.0.0:1080
    47.     stats enable
    48.     stats hide-version
    49.     stats uri     /haproxyadmin?stats
    50.     stats realm   Haproxy\ Statistics
    51.     stats auth    admin:admin
    52.     stats admin if TRUE
    53.  
    54.  
    55. frontend http-in
    56.     bind *:80
    57.     mode http
    58.     log global
    59.     option httpclose
    60.     option logasap     #不等待响应结束就记录日志，表示提前记录日志，一般日志会记录响应时长，此不记录响应时长
    61.     option dontlognull     #不记录空信息
    62.     capture request  header Host len 20    #记录请求首部的前20个字符
    63.     capture request  header Referer len 60   #referer跳转引用，就是上一级
    64.     default_backend servers
    65.  
    66. frontend healthcheck
    67.     bind :1099    #定义外部检测机制
    68.     mode http
    69.     option httpclose
    70.     option forwardfor
    71.     default_backend servers
    72.  
    73. backend servers
    74.   balance roundrobin
    75.     server websrv1 192.168.1.111:80 check maxconn 2000

    6. 负载均衡MySQL服务的配置示例