lvs主主互备

7564321

项目名称：lvs双主负载均衡
项目描述：lvs双主负载web为CDN客户提供访问
项目技术：lvs双主负载Nginx

lvs+keepalived
192.168.110.130
vip1：192.168.110.140
lvs+keepalived
192.168.110.131
vip2：192.168.110.141

Nginx1
192.168.110.132
vip1：192.168.110.140
vip2：192.168.110.141
Nginx2
192.168.110.133
vip1：192.168.110.140
vip2：192.168.110.141

lvs上安装keepalived和ipvsadm
#!/bin/bash

#判断执行结果
judge() {
   if [ $? -eq 0 ];then
      echo "successfully...."
   else
      echo "filed...."
      exit
   fi
}
#http://www.linuxvirtualserver.org/software/kernel-2.6
#http://www.keepalived.org/software

echo "环境安装"
yum -y install gcc openssl openssl-devel popt popt-devel net-snmp  net-snmp-devel libnl* &>> /dev/null
judge

echo "安装ipvsadm"
cd /usr/local/src
yum -y install ipvsadm &>> /dev/null
judge

echo "下载并安装keepalived"
wget http://www.keepalived.org/software/keepalived-1.2.7.tar.gz &>> /dev/null
tar -zxf keepalived-1.2.7.tar.gz
cd keepalived-1.2.7
echo "执行configure"
./configure --prefix=/usr/local/keepalived --enable-snmp --sysconfdir=/etc &>> configure-`date +%F`.log
judge
echo "执行make"
make &>> make-`date +%F`.log
judge
echo "执行make install"
make install &>> make_install-`date +%F`.log
judge

rm -rf configure-`date +%F`.log make-`date +%F`.log make_install-`date +%F`.log
cp /usr/local/keepalived/sbin/keepalived  /sbin/
cp /usr/local/keepalived/bin/genhash /bin/

webserver上配置VIP
#!/bin/bash
#description:start realserver
#script_name:realserver_config

VIP1="192.168.110.140"     #虚拟IP
VIP2="192.168.110.141"     #虚拟IP

source /etc/init.d/functions

case "$1" in
start)
echo "start LVS of realserver."
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
/sbin/ifconfig lo:0 $VIP1 broadcast $VIP1 netmask 255.255.255.255 up
/sbin/ifconfig lo:1 $VIP2 broadcast $VIP2 netmask 255.255.255.255 up
;;
stop)
echo "0" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce
/sbin/ifconfig lo:0 down
/sbin/ifconfig lo:1 down
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac

lvs1配置keepalived
global_defs {
   notification_email {
     guotao@163.com
   }
   notification_email_from guotao@163.com
   smtp_server guotao@163.com
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.140
    }
    }
virtual_server 192.168.110.140 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
#   nat_mask 255.255.255.0
#   persistence_timeout 50
    protocol TCP
    real_server 192.168.110.132 80 {#real server上80端口
        weight 5
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
    real_server 192.168.110.133 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
}
vrrp_instance VI_2 {
    state BACKUP
    interface eth0
    virtual_router_id 52
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.141
    }
    }
virtual_server 192.168.110.141 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
#   nat_mask 255.255.255.0
#   persistence_timeout 50
    protocol TCP
    real_server 192.168.110.132 80 {#real server上80端口
        weight 5
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
    real_server 192.168.110.133 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
}

lvs2配置keepalived
global_defs {
   notification_email {
     guotao@163.com
   }
   notification_email_from guotao@163.com
   smtp_server guotao@163.com
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.140
    }
    }
virtual_server 192.168.110.140 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
#   nat_mask 255.255.255.0
#   persistence_timeout 50
    protocol TCP
    real_server 192.168.110.132 80 {#real server上80端口
        weight 5
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
    real_server 192.168.110.133 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
}
vrrp_instance VI_2 {
    state MASTER
    interface eth0
    virtual_router_id 52
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.110.141
    }
    }
virtual_server 192.168.110.141 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
#   nat_mask 255.255.255.0
#   persistence_timeout 50
    protocol TCP
    real_server 192.168.110.132 80 {#real server上80端口
        weight 5
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
    real_server 192.168.110.133 80 {
        weight 3
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
        }
}