Centos7增加、删除IP LINUX系统增加删除IP怎么操作

增加IP

1.查看当前IP信息：

ifconfig

[root@vlmwxlzjhculhkx ~]# ifconfig

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 100.100.100.100  netmask 255.255.255.0  broadcast 100.100.100.255

        inet6 xx::xx:xx:xx:xx  prefixlen 64  scopeid 0x20<link>

        ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)

        RX packets 1072491326  bytes 71902281992 (66.9 GiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 15681045  bytes 18917811748 (17.6 GiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

2.增加IP100.100.100.101 和子网掩码

ifconfig eth0:1 100.100.100.101 netmask 255.255.255.0 up

[root@vlmwxlzjhculhkx ~]# ifconfig eth0:1 100.100.100.101 netmask 255.255.255.0 up

1

3.查看

[root@vlmwxlzjhculhkx ~]# ifconfig

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 100.100.100.100  netmask 255.255.255.0  broadcast 100.100.100.255

        inet6 xx::xx:xx:xx:xx  prefixlen 64  scopeid 0x20<link>

        ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)

        RX packets 1072491326  bytes 71902281992 (66.9 GiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 15681045  bytes 18917811748 (17.6 GiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 100.100.100.101  netmask 255.255.255.0  broadcast 100.100.100.255

        ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)

eth0:1就是新加的IP了

删除IP

1.查看当前IP

[root@vlmwxlzjhculhkx ~]# ifconfig

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 100.100.100.100  netmask 255.255.255.0  broadcast 100.100.100.255

        inet6 xx::xx:xx:xx:xx  prefixlen 64  scopeid 0x20<link>

        ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)

        RX packets 1072491326  bytes 71902281992 (66.9 GiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 15681045  bytes 18917811748 (17.6 GiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 100.100.100.101  netmask 255.255.255.0  broadcast 100.100.100.255

        ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)

2.记住要删除的IP，比如我们要删除100.100.100.101

ifconfig eth0:1 down

[root@vlmwxlzjhculhkx ~]# ifconfig eth0:1 down