CentOS 7修改網卡名稱

CentOS 7 修改網卡名為eth0

標簽： linux

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CentOS7的網卡名稱太長，這不符合我們的使用習慣，增加了管理難度，最簡單粗暴的方法是在安裝系統的時候就把網卡名改了。當然，安裝好的系統也是可以修改的。下面分別介紹兩種方法。

方法一：

在進入安裝界面的時候把光標移動到Install CentOS7,按下tab鍵，在后面輸入“ifnames=0 biosdevname=0”回車即可。

方法二：

進入網卡配置文件目錄

[root@centos7 ~]# cd /etc/sysconfig/network-scripts/

重命名網卡

[root@centos7 network-scripts]# mv ifcfg-eno16777736 ifcfg-eth0

修改配置文件NAME、DEVICE

[root@centos7 network-scripts]# vim ifcfg-eth0 
TYPE=Ethernet
BOOTPROTO=static
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
NAME=eth0
UUID=552c01f7-fd9d-4f19-913e-379a2bf5a467
DEVICE=eth0
ONBOOT=yes
IPADDR=10.0.0.111
"ifcfg-eth0" 14L, 239C written 

修改grub

sed -i.bak 's#crashkernel=auto rhgb quiet#crashkernel=auto rhgb net.ifnames=0 biosdevname=0 quiet#g' /etc/sysconfig/grub

[root@centos7 network-scripts]# vim /etc/sysconfig/grub 
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto rhgb net.ifnames=0 biosdevname=0 quiet"
"/etc/sysconfig/grub" 7L, 263C written 

生成啟動菜單

[root@centos7 network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg 
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-7ed5d4eebe4c43e3aadbda68cd0ef311
Found initrd image: /boot/initramfs-0-rescue-7ed5d4eebe4c43e3aadbda68cd0ef311.img
done

重啟系統生效

[root@centos7 network-scripts]# reboot

查看是否成功

centos7默認沒有ifconfig命令，需yum install net-tools -y安裝

[root@centos7 ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.0.111  netmask 255.255.255.0  broadcast 10.0.0.255
        inet6 fe80::20c:29ff:fe57:875c  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:57:87:5c  txqueuelen 1000  (Ethernet)
        RX packets 39  bytes 4887 (4.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 43  bytes 7502 (7.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0