具体命令如下：
ifconfig team0:1 10.50.61.17 netmask 255.255.255.0 up
team0 为添加的网卡
关闭的时候 up--> down
ifconfig team0:1 10.50.61.17 netmask 255.255.255.0 down
[root@YW-TR-DB]:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:d0:fa:f7 brd ff:ff:ff:ff:ff:ff
inet 10.50.28.78/24 brd 10.50.28.255 scope global eth0
[root@YW-TR-DB]:~# ifc
ifcfg ifconfig
[root@YW-TR-DB]:~# ifconfig eth0:1 10.50.28.115 netmask 255.255.255.0 up
[root@YW-TR-DB]:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:d0:fa:f7 brd ff:ff:ff:ff:ff:ff
inet 10.50.28.78/24 brd 10.50.28.255 scope global eth0
inet 10.50.28.115/24 brd 10.50.28.255 scope global secondary eth0:1
[root@YW-TR-DB]:~# ifconfig eth0:1 10.50.28.115 netmask 255.255.255.0 down
[root@YW-TR-DB]:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:0c:29:d0:fa:f7 brd ff:ff:ff:ff:ff:ff
inet 10.50.28.78/24 brd 10.50.28.255 scope global eth0
这个IP地址并不是虚拟IP，只是在 team0 网卡上添加了一个IP 地址，要实现添加能够进行漂移的虚拟IP是要通过keepalived 来实现的
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/29291882/viewspace-2125572/ ，如需转载，请注明出处，否则将追究法律责任。
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