如何在RHEL7或CentOS 7系统下修改网卡名称（亲测有效~！）

亲测有效的更改RHEL7或CentOS 7的网卡名称的方法，

按照以下4步来操作就可以实现！

Step 1 ：网卡配置文件名称重命名为eth0
[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.74.74 netmask 255.255.255.0 broadcast 192.168.74.255
inet6 fe80::5c:8c49:19b3:669 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:54:c2:7a txqueuelen 1000 (Ethernet)
RX packets 112 bytes 11132 (10.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 112 bytes 13927 (13.6 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 1000 (Local Loopback)
RX packets 48 bytes 4080 (3.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 48 bytes 4080 (3.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

#注意：00:0c:29:54:c2:7a为需要修改的网卡MAC地址

cd /etc/sysconfig/network-scripts/

ls
ifcfg-ens33 ifdown-ipv6 ifdown-TeamPort ifup-ippp ifup-routes network-functions
ifcfg-lo ifdown-isdn ifdown-tunnel ifup-ipv6 ifup-sit network-functions-ipv6
ifdown ifdown-post ifup ifup-isdn ifup-Team
ifdown-bnep ifdown-ppp ifup-aliases ifup-plip ifup-TeamPort
ifdown-eth ifdown-routes ifup-bnep ifup-plusb ifup-tunnel
ifdown-ib ifdown-sit ifup-eth ifup-post ifup-wireless
ifdown-ippp ifdown-Team ifup-ib ifup-ppp init.ipv6-global
#ifcfg-ens33 是目前需要更改名称的网卡

mv ifcfg-ens33 ifcfg-eth0

vim ifcfg-eth0
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID=febc83ef-0890-4b03-b859-9045c4158d13
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.74.74
PREFIX=24
DNS1=223.5.5.5
IPV6_PRIVACY=no

GATEWAY=192.168.74.2

:wq!
#主要修改NAME=eth0 DEVICE=eth0

Step 2 ：禁用网卡命名规则
[root@localhost network-scripts]# cd /etc/default/

[root@localhost default]# ls
grub nss useradd

[root@localhost default]# vim 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="rhgb quiet net.ifnames=0 biosdevname=0"
GRUB_DISABLE_RECOVERY="true"

:wq!
#在GRUB_CMDLINE_LINUX="rhgb quiet" 中增加“ net.ifnames=0 biosdevname=0” 表示禁用此功能

Step 3 ：添加udev网卡规则
[root@localhost default]# cd /etc/udev/rules.d/

[root@localhost rules.d]# ls
70-persistent-ipoib.rules

[root@localhost rules.d]# vim 70-persistent-ipoib.rules

# This is a sample udev rules file that demonstrates how to get udev to
# set the name of IPoIB interfaces to whatever you wish. There is a
# 16 character limit on network device names.
#
# Important items to note: ATTR{type}=="32" is IPoIB interfaces, and the
# ATTR{address} match must start with ?* and only reference the last 8
# bytes of the address or else the address might not match the variable QPN
# portion.
#
# Modern udev is case sensitive and all addresses need to be in lower case.
#
# ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", ATTR{type}=="32", ATTR{address}=="?*00:02:c9:03:00:31:78:f2", NAME="mlx4_ib3"
#
SUBSYSTEM=="net",ACTION=="add",DRIVERS=="?*",ATTR{address}=="00:0c:29:54:c2:7a",
ATTR｛type｝=="1" ,KERNEL=="eth*",NAME="eth0"

:wq!
# 增加内容SUBSYSTEM=="net",ACTION=="add",DRIVERS=="?*",ATTR{address}=="需要修改名称的网卡MAC地址",ATTR｛type｝=="1" ,KERNEL=="eth*",NAME="eth0"

[root@localhost rules.d]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-1127.8.2.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-1127.8.2.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-693.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-693.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-fcfe639a5bd94a0ba3369ead5d2ee97b
Found initrd image: /boot/initramfs-0-rescue-fcfe639a5bd94a0ba3369ead5d2ee97b.img
done
# 加载更新grub配置参数

Step 4 ：重启Linux系统后验证网卡名称是否更改成功
[root@localhost rules.d]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.74.74 netmask 255.255.255.0 broadcast 192.168.74.255
inet6 fe80::5c:8c49:19b3:669 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:54:c2:7a txqueuelen 1000 (Ethernet)
RX packets 865 bytes 70839 (69.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 590 bytes 74932 (73.1 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 1000 (Local Loopback)
RX packets 48 bytes 4080 (3.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 48 bytes 4080 (3.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

#修改成功！