五、配置案例

  1. 前端调度器IP：192.168.1.210
  2.  
  3. 后端应用服务器IP:   192.168.1.111 和 192.168.1.112

1. 定义独立日志文件

  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. global
  2.     log         127.0.0.1 local2
  3.  
  4.     chroot      /var/lib/haproxy
  5.     pidfile     /var/run/haproxy.pid
  6.     maxconn     4000
  7.     user        haproxy
  8.     group       haproxy
  9.     daemon
  10.  
  11.     stats socket /var/lib/haproxy/stats
  12.  
  13. defaults
  14.     mode                    http
  15.     log                     global
  16.     option                  httplog
  17.     option                  dontlognull
  18.     option http-server-close
  19.     option forwardfor       except 127.0.0.0/8
  20.     option                  redispatch
  21.     retries                 3
  22.     timeout http-request    10s
  23.     timeout queue           1m
  24.     timeout connect         10s
  25.     timeout client          1m
  26.     timeout server          1m
  27.     timeout http-keep-alive 10s
  28.     timeout check           10s
  29.     maxconn                 3000
  30.  
  31. frontend webser                                               #webser为名称
  32.         option forwardfor
  33.         bind  *:80                                                
  34.         default_backend         app 
  35. backend app 
  36.         balance roundrobin                            #使拥roundrobin 算法
  37.         server  app1 192.168.1.111:80 check          
  38.         server  app2 192.168.1.112:80 check

3. haproxy统计页面的输出机制

  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 hide-version                 # 隐藏统计页面上HAProxy的版本信息
  19.         stats refresh 30s                   # 统计页面自动刷新时间
  20.         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
  21.         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. frontend  webservs
  2.     bind *:80
  3.     acl url_static       path_beg       -i /static /images /javascript /stylesheets
  4.     acl url_static       path_end       -i .jpg .gif .png .css .js  .html
  5.     acl url_php          path_end       -i .php
  6.     acl host_static      hdr_beg(host)  -i img. imgs. video. videos.  ftp. image. download.
  7.     use_backend static          if url_static  or host_static
  8.  
  9.     use_backend dynamic         if url_php
  10.     default_backend             dynamic
  11.  
  12. backend static
  13.     balance     roundrobin
  14.     server      node1 192.168.1.111:80  check maxconn 3000
  15.  
  16. backend dynamic
  17.         balance roundrobin
  18.         server  node2   192.168.1.112:80 check maxconn 1000

5. http服务器配置完整示例

  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 queue           1m
  38.     timeout connect         10s
  39.     timeout client          1m
  40.     timeout server          1m
  41.     timeout http-keep-alive 10s
  42.     timeout check           10s
  43.     maxconn                 30000
  44.  
  45. listen stats
  46.     mode http
  47.     bind 0.0.0.0:1080
  48.     stats enable
  49.     stats hide-version
  50.     stats uri     /haproxyadmin?stats
  51.     stats realm   Haproxy\ Statistics
  52.     stats auth    admin:admin
  53.     stats admin if TRUE
  54.  
  55.  
  56. frontend http-in
  57.     bind *:80
  58.     mode http
  59.     log global
  60.     option httpclose
  61.     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
  62.     option dontlognull     #不记录空信息
  63.     capture request  header Host len 20    #记录请求首部的前20个字符
  64.     capture request  header Referer len 60   #referer跳转引用，就是上一级
  65.     default_backend servers
  66.  
  67. frontend healthcheck
  68.     bind :1099    #定义外部检测机制
  69.     mode http
  70.     option httpclose
  71.     option forwardfor
  72.     default_backend servers
  73.  
  74. backend servers
  75.   balance roundrobin
  76.     server websrv1 192.168.1.111:80 check maxconn 2000
  77.     server websrv2 192.168.1.112:80 check maxconn 2000

6. 负载均衡MySQL服务的配置示例

  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                    tcp
  29.     log                     global
  30.     option                  httplog
  31.     option                  dontlognull
  32.     retries                 3
  33.     timeout http-request    10s
  34.     timeout queue           1m
  35.     timeout connect         10s
  36.     timeout client          1m
  37.     timeout server          1m
  38.     timeout http-keep-alive 10s
  39.     timeout check           10s
  40.     maxconn                 600
  41.  
  42. listen stats
  43.     mode http
  44.     bind 0.0.0.0:1080
  45.     stats enable
  46.     stats hide-version
  47.     stats uri     /haproxyadmin?stats
  48.     stats realm   Haproxy\ Statistics
  49.     stats auth    admin:admin
  50.     stats admin if TRUE
  51.  
  52.  
  53. frontend mysql
  54.     bind *:3306
  55.     mode tcp
  56.     log global
  57.     default_backend mysqlservers
  58.  
  59. backend mysqlservers
  60.     balance leastconn
  61.     server dbsrv1 192.168.1.111:3306 check port 3306 intval 2 rise 1 fall 2 maxconn 300
  62.     server dbsrv2 192.168.1.112:3306 check port 3306 intval 2 rise 1 fall 2 maxconn 300
  63.