LVS + Keepalived之dr模式

显示代码

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一、仅lvs服务器端安装 yum install ipvsadm openssl-devel popt popt-devel libnl-devel cd /opt/src/ tar xzvf keepalived-1.2.7.tar.gz cd keepalived-1.2.7 ./configure make && make install cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/ cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/ mkdir /etc/keepalived cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/ cp /usr/local/sbin/keepalived /usr/sbin/   修改/etc/keepalived/keepalived.conf文件 [root@WEB ~]# cat /etc/keepalived/keepalived.conf  ! Configuration File for keepalived   global_defs {    notification_email {           [e-mail]    }    notification_email_from [e-mail]    smtp_server mail.123.com    smtp_connect_timeout 30    router_id LVS_DEVEL }   vrrp_instance VI_1 {     state MASTER     interface eth0     virtual_router_id 52     priority 100     advert_int 1     authentication {         auth_type PASS         auth_pass 1111     }     virtual_ipaddress {        192.168.1.88     } } virtual_server 192.168.1.88 80 {     delay_loop 6     lb_algo lc     lb_kind DR     #lb_kind TUN     persistence_timeout 60     protocol TCP          real_server 192.168.1.18 80 {         weight 3                    TCP_CHECK {         connect_timeout 30           nb_get_retry 3         delay_before_retry 2         connect_port 80         }     }     real_server 192.168.1.68 80 {         weight 3         TCP_CHECK {         connect_timeout 30         nb_get_retry 3         delay_before_retry 2         connect_port 80         }      }  } [root@WEB ~]# [root@WEB ~]# service ipvsadm start [root@WEB ~]# service keepalived start   注意： 打开转发或关闭，dr/tun模式无影响 echo "1" > /proc/sys/net/ipv4/ip_forward   二、实际服务器端的操作 [root@localhost ~]# cat /usr/local/vip.sh #!/bin/bash # Script to start LVS DR real server. # description: LVS DR real server .  /etc/rc.d/init.d/functions VIP=192.168.1.88 #host=`/bin/hostname` case "$1" in start)        # Start LVS-DR real server on this machine.         /sbin/ifconfig lo down         /sbin/ifconfig lo up         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 $VIP broadcast $VIP netmask 255.255.255.255 up         /sbin/route add  $VIP dev lo:0 ;; stop)         # Stop LVS-DR real server loopback device(s).         /sbin/ifconfig lo:0 down         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 ;; status)         # Status of LVS-DR real server.         islothere=`/sbin/ifconfig lo:0 | grep $VIP`         isrothere=`netstat -rn | grep "lo:0" | grep $VIP`         if [ ! "$islothere" -o ! "isrothere" ];then             # Either the route or the lo:0 device             # not found.             echo "LVS-DR real server Stopped."         else             echo "LVS-DR real server Running."         fi ;; *)             # Invalid entry.             echo "$0: Usage: $0 {start|status|stop}"             exit 1 ;; esac [root@localhost ~]#  /usr/local/vip.sh start|stop|status         三、lvs查看   ipvsadm -ln ipvsadm -lnc ipvsadm -l -n --stats   调度算法：rr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq