1、复制eth0网卡配置文件
$ cd /etc/sysconfig/network-scripts/ $ cp ifcfg-eth0 ifcfg-eth0:0 $ vim ifcfg-etg0:0 DEVICE=eth0:0 #修改为eth0:0 HWADDR=00:0c:29:e4:19:b3 #网卡MAC地址要保持和eth0一致 TYPE=Ethernet UUID=54dff50b-0795-4f35-87a2-e4f0ec3e345e ONBOOT=yes #开机启动 ARPCHECK=no BOOTPROTO=static IPADDR=192.168.1.11 #修改ip NETMASK=255.255.252.0 GATEWAY=192.168.1.1 DNS1=8.8.8.8
2、启动eth0:0
$ ifup eth0:0 启动eth0:0 注:不用重启网卡
3、检查是否生效
主要是两个命令ifconfig
、ip addr
可以看到配置好的新ip即可,外部也可以ping一下看是否能通。
$ ifconfig eth0 Link encap:Ethernet HWaddr 00:0C:29:E4:19:B3 inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.252.0 inet6 addr: fe80::20c:29ff:fee4:19b3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:99256 errors:0 dropped:0 overruns:0 frame:0 TX packets:95314 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:13795190 (13.1 MiB) TX bytes:10841617 (10.3 MiB) eth0:0 Link encap:Ethernet HWaddr 00:0C:29:E4:19:B3 inet addr:192.168.1.11 Bcast:192.168.1.255 Mask:255.255.252.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:11 errors:0 dropped:0 overruns:0 frame:0 TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:660 (660.0 b) TX bytes:660 (660.0 b) $ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:e4:19:b3 brd ff:ff:ff:ff:ff:ff inet 192.168.1.10/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.11/24 brd 192.168.1.255 scope global secondary eth0:0 inet6 fe80::20c:29ff:fee4:19b3/64 scope link valid_lft forever preferred_lft forever