Centos7 搭建 Keepalived+LVS 备注

NAT模型需要RealServer gateway设定为，DR模式需要执行 RealServer.sh。需要先安装network-tools.

#!/bin/bash
#description : start realserver 
VIP=192.168.8.188
host='/bin/hostname'
case "$1" in
        start)
        echo " start LVS of REALServer"
        /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 netmask 255.255.255.255 up
        /sbin/route add -host $VIP dev lo:0
        ;;
        stop)
        /sbin/ifconfig lo:0 down
        ;;
        status)
        islothere='/sbin/ifconfig lo:0 | grep $VIP'
        isrothere='netstat -rn | grep "lo" | grep $VIP'
        if[! "$islothere" -o ! "$isrothere"];then
           echo "LVS-DR real server stoped"
        else 
           echo "LVS-DR Running"
        fi
        ;;
        *)
        echo "$0: Usage: $0 {start|status|stop}"
        exit 1
        ;;
esac