centos 修改网卡名 eth0

默认网卡名称是 eno16777736

1、修改配置文件 ifcfg-eno16777736




[[email protected] ~]# cd /etc/sysconfig/network-scripts/
[[email protected] network
-scripts]# vim ifcfg-eno16777736


将 NAME 和 DEVICE 修改为 eth0




TYPE=Ethernet
BOOTPROTO
=dhcp
DEFROUTE
=yes
IPV4_FAILURE_FATAL
=no
IPV6INIT
=yes
IPV6_AUTOCONF
=yes
IPV6_DEFROUTE
=yes
IPV6_FAILURE_FATAL
=no
NAME
=eth0
UUID
=0fea6de7-54d9-4a8d-bddc-3061678e8a0e
DEVICE
=eth0
ONBOOT
=yes
PEERDNS
=yes
PEERROUTES
=yes
IPV6_PEERDNS
=yes
IPV6_PEERROUTES
=yes


重命名该文件 




mv ifcfg-eno16777736 ifcfg-eth0


2、禁用该可预测命名规则


在 grup 文件里面的 GRUB_CMDLINE_LINUX 变量添加 net.ifnames=0 biosdevname=0




[[email protected] network-scripts]# vim /etc/default/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 net.ifnames=0 biosdevname=0 rhgb quiet"
GRUB_DISABLE_RECOVERY
="true"


运行命令重新生成GRUB配置并更新内核参数




[[email protected] 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-692c580a413f41d8b51ddc4724500560
Found initrd image:
/boot/initramfs-0-rescue-692c580a413f41d8b51ddc4724500560.img
done


3、重启系统 




[[email protected] network-scripts]# reboot now


查看网卡信息




[[email protected] network-scripts]# ifconfig
eth0: flags
=4163 mtu 1500
inet
192.168.81.128 netmask 255.255.255.0 broadcast 192.168.81.255
inet6 fe80::20c:29ff:fe5b:1a46 prefixlen
64 scopeid 0x20
ether
00:0c:29:5b:1a:46 txqueuelen 1000 (Ethernet)
RX packets
474 bytes 41909 (40.9 KiB)
RX errors
0 dropped 0 overruns 0 frame 0
TX packets
266 bytes 45987 (44.9 KiB)
TX errors
0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags
=73 mtu 65536
inet
127.0.0.1 netmask 255.0.0.0
inet6 ::
1 prefixlen 128 scopeid 0x10
loop txqueuelen
0 (Local Loopback)
RX packets
6 bytes 564 (564.0 B)
RX errors
0 dropped 0 overruns 0 frame 0
TX packets
6 bytes 564 (564.0 B)
TX errors
0 dropped 0 overruns 0 carrier 0 collisions 0

virbr0: flags
=4099 mtu 1500
inet
192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether
00:00:00:00:00:00 txqueuelen 0 (Ethernet)
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


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