haproxy负载均衡

转:http://www.cnblogs.com/dkblog/archive/2011/07/06/2098949.html

http://www.cnblogs.com/super-d2/p/4134562.html

http://blog.csdn.net/youyudehexie/article/details/7592206

51  make TARGET=linux26 PREFIX=/usr/local/haproxy install

vim /usr/local/haproxy/conf/haproxy.cfg

global
    maxconn 51200
    chroot /usr/local/haproxy
    uid 99
    gid 99
    daemon
    #quiet
    nbproc 1
    pidfile /usr/local/haproxy/logs/haproxy.pid 
defaults
        mode http
        #retries 2
        option redispatch
        option abortonclose
        timeout connect 5000ms
        timeout client 30000ms
        timeout server 30000ms
        #timeout check 2000
        log 127.0.0.1 local0 err #[err warning info debug]
        balance roundrobin
# option httplog
# option httpclose
# option dontlognull
# option forwardfor 
listen admin_stats
        bind 0.0.0.0:8888
        option httplog
        stats refresh 30s
        stats uri /stats
        stats realm Haproxy Manager
        stats auth admin:admin
        #stats hide-version 
listen test1
        bind :12345
        mode tcp
        server t1 10.77.50.111:8088
        server t2 10.77.50.111:8099
listen test2 
	bind :80
        option httpclose
        option forwardfor
        server s1 10.77.50.111:8088 check weight 1 minconn 1 maxconn 3 check inter 40000
        server s2 10.77.50.68:808 check weight 1 minconn 1 maxconn 3 check inter 40000  //本机nginx运行在808

root@test-VirtualBox:/usr/local/haproxy/conf#  /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/conf/haproxy.cfg

测试

访问http://10.77.50.68 

1.安装

tar -zxvf haproxy-1.3.15.10.tar.gz

cd haproxy-1.3.15.10

make TARGET=linux26 PREFIX=/usr/local/haproxy  (#将haproxy安装到/usr/local/haproxy)

make install PREFIX=/usr/local/haproxy

cd /usr/local/haproxy

vi haproxy.cfg

2.配置

安装完毕后，进入安装目录配置文件，默认情况下目录里是没有.cfg配置文件的，可以回到安装文件目录下将examples下的haproxy.cfg拷贝到usr/local/haproxy下。

haproxy.cfg的内容如下：

# cd /usr/local/haproxy

# vi haproxy.cfg

global

    maxconn 51200

    chroot /usr/local/haproxy

    uid 99

    gid 99

    daemon

    #quiet

    nbproc 1

    pidfile /usr/local/haproxy/logs/haproxy.pid

 

defaults

        mode http

        #retries 2

        option redispatch

        option abortonclose

        timeout connect 5000ms

        timeout client 30000ms

        timeout server 30000ms

        #timeout check 2000

        log 127.0.0.1 local0 err #[err warning info debug]

        balance roundrobin

# option httplog

# option httpclose

# option dontlognull

# option forwardfor

 

listen admin_stats

        bind 0.0.0.0:8888

        option httplog

        stats refresh 30s

        stats uri /stats

        stats realm Haproxy Manager

        stats auth admin:admin

        #stats hide-version

 

listen test1

        bind :12345

        mode tcp

        server t1 127.0.0.1:8881

        server t2 192.168.1.102:8881

 

listen test2 :80

       option httpclose

       option forwardfor

        server s1 127.0.0.1:8081 check weight 1 minconn 1 maxconn 3 check inter 40000

        server s2 127.0.0.1:8082 check weight 1 minconn 1 maxconn 3 check inter 40000

 

3.启动Haproxy

[root@node3 haproxy]# /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg
[root@node3 app]# ps -ef |grep haproxy |grep -v grep
root      6950     1  0 19:35 ?        00:00:00 /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg

访问：http://192.168.2.150:8888/stats

4.测试：

由于我们把环回接口绑定127.0.0.1:8081端口到本机127.0.0.1:80端口上，

我们上次安装的httpd，绑定的是127.0.0.1:8081

http://www.cnblogs.com/super-d2/p/4134467.html

访问http://192.168.2.137:8081/可看到这个

而没配置haproxy之前，我们访问http://192.168.2.137:80/是访问不到的，因为这个端口80上没有这项服务；

如果现在我们启动haproxy的话，

再次访问：

 

可以通过通过haproxy我们实现了代理访问

http://192.168.2.137:80/

5.设置为服务命令

vim /etc/rc.d/init.d/haproxy

脚本如下：

#!/bin/bash  
BASE_DIR="/usr/local/haproxy" ARGV="$@" start()  
{  
echo "START HAPoxy SERVERS" $BASE_DIR/sbin/haproxy -f $BASE_DIR/haproxy.cfg  
}  
  
stop()  
{  
echo "STOP HAPoxy Listen" kill -TTOU $(cat $BASE_DIR/logs/haproxy.pid)  
echo "STOP HAPoxy process" kill -USR1 $(cat $BASE_DIR/logs/haproxy.pid)  
} case $ARGV in start)  
start  
ERROR=$? ;;  
  
stop)  
stop  
ERROR=$? ;;  
  
restart)  
stop  
start  
ERROR=$? ;; *)  
echo "hactl.sh [start|restart|stop]" esac  
exit $ERROR 

chmod +x /etc/rc.d/init.d/haproxy 

启动与停止haproxy

[root@node3 ~]# service haproxy stop
STOP HAPoxy Listen
STOP HAPoxy process
[root@node3 ~]# ps -ef |grep haproxy |grep -v grep

[root@node3 ~]# service haproxy start
START HAPoxy SERVERS
[root@node3 ~]# ps -ef |grep haproxy |grep -v grep
root 11259 1 0 15:33 ? 00:00:00 /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg