利用信号量的pv操作可以，利用信号量的pv操作实现

删除ip： echo "########## os remove vip"ip addr del 192.168.56.101/24 dev bond0 label bond0:1ip addr del 192.168.165.101/24 dev bond1 label bond1:1echo "########## os remove phy ip"ip addr del 192.168.56.100/24 dev bond0ip addr del 192.168.165.100/24 dev bond1 添加ip： echo "########## os add phy ip"ip addr add 192.168.56.100/24 brd 192.168.56.255 dev bond0ip addr add 192.168.165.100/24 brd 192.168.165.255 dev bond1echo "########## os add vip"ip addr add 192.168.56.101/24 brd 192.168.56.255 dev bond0 label bond0:1ip addr add 192.168.165.101/24 brd 192.168.165.255 dev bond1 label bond1:1 记得使用arping： # arping -q -A -c 1 -I bond0 192.168.56.100# arping -q -A -c 1 -I bond1 192.168.165.100# arping -q -A -c 1 -I bond0:1 192.168.56.101# arping -q -A -c 1 -I bond1:1 192.168.165.101 39952944