Nginx + Keepalived 负载均衡

ln -s /usr/src/kernels/2.6.18-194.el5-i686/ /usr/src/linux
tar zxvf keepalived-1.1.15.tar.gz 
cd keepalived-1.1.15
./configure --prefix=/usr/local/keepalived
make
make install
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/   #主配置文件
cp -v /usr/local/keepalived/sbin/keepalived /usr/sbin/
service keepalived start|stop           #启动、停止服务

! Configuration File for keepalived

global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_script chk_nginx {
        script "/usr/local/keepalived/check_http.sh"
        interval 2
        weight 2
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51   #同一个vrrp_instance，这个ID要相同
    priority 100               #同一个vrrp_instance，这个值master要大于backup
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
        track_script {
                chk_nginx
        }
    virtual_ipaddress {
        192.168.93.144    #定义vip，也就是对外IP，可以写多个（换行）
    }
}

vrrp_instance VI_2 {
    state BACKUP
    interface eth0
    virtual_router_id 52
    priority 50
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.93.145
    }
}

 ! Configuration File for keepalived

global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_script chk_nginx {
        script "/usr/local/keepalived/check_http.sh"
        interval 2
        weight 2
}

vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 50
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        192.168.93.144
    }
}

vrrp_instance VI_2 {
    state MASTER
    interface eth0
    virtual_router_id 52
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
        track_script {
                chk_nginx
        }
    virtual_ipaddress {
        192.168.93.145
    }
}