【haproxy】进行负载均衡配置

1， 测试环境：三台虚拟机190，191，192.分别安装均安装nginx端口设置为80，
2， 190上安装haproxy
# wget http://haproxy.1wt.eu/download/1.3/src/haproxy-1.3.20.tar.gz
# tar zcvf haproxy-1.3.20.tar.gz
# cd haproxy-1.3.20
# make TARGET=linux26 PREFIX=/usr/local/haproxy                                #将haproxy安装到/usr/local/haproxy
# make install PREFIX=/usr/local/haproxy
修改/root/haproxy-1.3.15.10/example/haproxy.cfg文件

global
    log 127.0.0.1 local3
    maxconn 20480
    chroot /usr/local/haproxy
    uid 1004 #1004为haproxy 用户的uid ,haproxy用户需要自己手动创建
    gid 1004
    daemon
    quiet
    nbproc 1
    pidfile /var/run/haproxy.pid
defaults
    log global
    mode http
    maxconn 20480
    option httplog
    option httpclose
    option forwardfor
    option dontlognull
    option redispatch
    retries 3
    balance roundrobin
    contimeout 5000
    clitimeout 50000
    srvtimeout 50000
listen web_poll 192.168.0.190:8081
    mode http
    option httplog
    option dontlognull
    option logasap
    option forwardfor
    option httpclose
# option httpchk GET /index.html 配置负载服务器访问信息
server web1 192.168.0.191:80 cookie 1 check inter 2000 rise 3 fall 3
server web2 192.168.0.192:80 cookie 1 check inter 2000 rise 3 fall 3
server web3 192.168.0.190:80 cookie 1 check inter 2000 rise 3 fall 3
#配置haproxy的状态监控页面
listen status 192.168.0.190:8080
    stats enable
    stats uri /stats
    stats auth admin:123456
    stats realm (Haproxy\ statistic)

开启：/usr/local/sbin/haproxy –f /root/haproxy-1.3.15.10/example/haproxy.cfg
关闭：killall haproxy
注意需要将防火墙关闭：chkconfig iptables off或者chkconfig iptables stop