LOG 功能：
编辑/etc/rsyslog.conf 配置文件：
# Provides UDP syslog reception $ModLoad imudp #需要启用 $UDPServerRun 514 #启动syslog 服务 # Provides TCP syslog reception #$ModLoad imtcp #$InputTCPServerRun 514 # Save news errors of level crit and higher in a special file. uucp,news.crit /var/log/spooler # Save boot messages also to boot.log local7.* /var/log/boot.log local2.* /var/log/haproxy/haproxy.log #指定 log 输出位置
配置案例一：
#--------------------------------------------------------------------- # 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 #全局配置 ，进程和系统相关 # 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 #日志设定，需要在/etc/rsyslog.conf 配置文件中进行设定。 chroot /var/lib/haproxy #修改haproxy 工作目录 pidfile /var/run/haproxy.pid maxconn 4000 #允许最大连接 user haproxy group haproxy daemon #以守护进程方式进行运行，否则在前台进行工作 # turn on stats unix socket stats socket /var/lib/haproxy/stats #stats 工作目录 #--------------------------------------------------------------------- #Proxies 配置段，代理的配置在这 # common defaults that all the 'listen' and 'backend' sections will # use if not designated in their block #--------------------------------------------------------------------- defaults #Proxies 的默认配置 mode http #默认代理模式 log global #全局的syslog 服务器，可以定义多个 option httplog #日志格式 option dontlognull option http-server-close #代理主动断开超时连接 option forwardfor except 127.0.0.0/8 #代理默认向后端插入 X-Forwarded-For ，mode 必须 http 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 #---------------------------------------------------------------------
#stats 配置实例
#---------------------------------------------------------------------
listen stats_test #配置stats 监听实例 bind *:1080 #绑定监听端口 1080 stats enable #启动stats 功能 stats hide-version #隐藏 haproxy 版本 #stats scope . #指定管理范围 stats uri /haproxyadmin?stats #指定访问路径 stats realm "HAproxy\ Statistics" #指定名称 stats auth zy:zzzzy #指定认证用户名，密码 stats admin if TRUE #启用管理功能
#---------------------------------------------------------------------
# main frontend which proxys to the backends #--------------------------------------------------------------------- frontend http_porxy #前端虚拟负载配置项，定义名称main ,或者别的 bind :80 #配置监听端口，有多种写法 bind :443 ssl crt /etc/haproxy/site.pem #监听端口绑定证书 acl url_static path_beg -i /static /images /javascript /stylesheets #acl 规则编辑，acl <aclname> <criterion> [flags] [operator] <value> ... acl url_static path_end -i .jpg .gif .png .css .js #先定义规则然后在 use_backend 进行引用 use_backend static if url_static #匹配规则，匹配的规则调用值 static 节点池 default_backend app #默认节点池 #--------------------------------------------------------------------- # static backend for serving up images, stylesheets and such #--------------------------------------------------------------------- backend static #定义static 节点池 # mode tcp mode http #指定负载模式 # blance static-rr 动态轮询负载 # blance leastconn 最小连接负载 # blance souce 基于源地址 hash 的负载 # blance hdr(Host) 基于访问请求中的Host 的负载 # balance roundrobin cookie SERVERID insert nocache indirect #插入 SERVERID cookie name ，并在后续用户访问时，利用cookie 维持会话 server web1 192.68.100.101:80 check inter 5000 rise 3 fall 3 weight 10 maxconn 2000 cookie webserver01 #指定server 状态监测，权重，最大连接和cookie 值 server web2 192.68.100.103:80 check inter 5000 rise 3 fall 3 weight 10 maxconn 2000 cookie webserver02 #--------------------------------------------------------------------- # 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
配置案例二：
#通过ACL 进行动静分离的配置
global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon # turn on stats unix socket stats socket /var/lib/haproxy/stats 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 30000 listen stats mode http bind 0.0.0.0:1080 stats enable stats hide-version stats uri /haproxyadmin?stats stats realm Haproxy\ Statistics stats auth admin:admin stats admin if TRUE frontend http-in bind *:80 mode http log global option httpclose option logasap option dontlognull capture request header Host len 20 capture request header Referer len 60 acl url_static path_beg -i /static /images /javascript /stylesheets acl url_static path_end -i .jpg .jpeg .gif .png .css .js use_backend static_servers if url_static default_backend dynamic_servers backend static_servers balance roundrobin server imgsrv1 172.16.200.7:80 check maxconn 6000 server imgsrv2 172.16.200.8:80 check maxconn 6000 backend dynamic_servers cookie srv insert nocache balance roundrobin server websrv1 172.16.200.7:80 check maxconn 1000 cookie websrv1 server websrv2 172.16.200.8:80 check maxconn 1000 cookie websrv2 server websrv3 172.16.200.9:80 check maxconn 1000 cookie websrv3
配置案例 MySQL服务的配置示例：
MySQL服务的配置示例 #--------------------------------------------------------------------- # 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 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon defaults mode tcp log global option httplog option dontlognull 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 600 listen stats mode http bind 0.0.0.0:1080 stats enable stats hide-version stats uri /haproxyadmin?stats stats realm Haproxy\ Statistics stats auth admin:admin stats admin if TRUE frontend mysql bind *:3306 mode tcp log global default_backend mysqlservers backend mysqlservers balance leastconn server dbsrv1 192.168.10.11:3306 check port 3306 intval 2 rise 1 fall 2 maxconn 300 server dbsrv2 192.168.10.12:3306 check port 3306 intval 2 rise 1 fall 2 maxconn 300
