lvs+dr模式（关键操作）

1）  IP配置（配置回环接口添加虚拟ip，让他代为转发）

/sbin/ifconfig lo:0 192.168.1.96 broadcast 192.168.1.96 netmask 255.255.255.255 up

/sbin/ifconfig lo:1 192.168.1.97 broadcast 192.168.1.97 netmask 255.255.255.255 up

/sbin/route add -host 192.168.1.96 dev lo:0

/sbin/route add -host 192.168.1.97 dev lo:1

写入配置文件,开机自动执行 /etc/rc.local

 

1）  ARP（arp）抑制配置,让当客户端发送广播的时候，realserver闭嘴

/etc/sysctl.conf

net.ipv4.conf.lo.arp_ignore=1

net.ipv4.conf.lo.arp_announce=2

net.ipv4.conf.all.arp_ignore=1

net.ipv4.conf.all.arp_announce=2

 

Director配置1.10和1.98：

1）  keepalived配置

#给出部分参考配置

1.10

 

! Configuration File for keepalived

global_defs {

  lvs_id BACKUP

}

vrrp_sync_group MAIL {

    group {

       VI_1_500

    }

}

 

vrrp_instance VI_1_500 {

         state BACKUP

    interface eth0

    virtual_router_id 95

  #1.98的优先级设置为100

priority 150  

    advert_int 5

    authentication {

        auth_type PASS

        auth_pass 1111

    }

      virtual_ipaddress {

      192.168.1.96/24

      192.168.1.97/24

    }

}

 

 

###############################################################

#this virtual server is the setting of Email Server SMTP port

###############################################################

 

virtual_server 192.168.1.97 25 {

   delay_loop 6

   lb_algo rr

   lb_kind DR

   persistence_timeout 50

   protocol TCP

 

   real_server 192.168.1.99 25 {

       weight 1

       TCP_CHECK {

              connect_timeout 3

              nb_get_retry 3

              delay_before_retry 3

              connect_port 25

            }

   }

}