在CentOS7中我安装了3块网卡，但是名字是enoxxxxx的格式，让我这个有强迫症的***座很是不爽，以下是我配置网卡并且重命名为ethx的详细步骤

前提工作要做好：

1.查看网卡UUID

# nmcli con show

名称  UUID                                  类型            设备 

eth1  dfc9199c-7b47-4209-a396-109bf44e683a  802-3-ethernet  eth1 

eth2  020d86aa-548f-49c2-9cb0-f6cfffdb8219  802-3-ethernet  eth2 

eth0  a5e6ae5c-dd71-48be-b374-ad64121bd785  802-3-ethernet  eth0

2.查看网卡信息

# nmcli device show [设备名]  例：

# nmcli device show eth0

GENERAL.设备:                           eth0

GENERAL.类型:                           ethernet

GENERAL.硬盘:                           00:0C:29:94:C8:08

GENERAL.MTU:                            1500

GENERAL.状态:                           100 (连接的)

GENERAL.CONNECTION:                     eth0

GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/0

WIRED-PROPERTIES.容器:                  开

IP4.地址[1]:                            192.168.66.4/24

IP4.网关:                               192.168.66.1

IP4.DNS[1]:                             202.106.46.151

IP6.地址[1]:                            fe80::20c:29ff:fe94:c808/64

IP6.网关:                               

步入正题

进入到网卡配置文件目录

# cd /etc/sysconfig/network-scripts

将网卡重新命名

# mv ifcfg-eno16777736 ifcfg-eth0

修改网卡信息，不是很懂的小伙伴请参考我的另一篇详细解说http://baoer7758.blog.51cto.com/8187563/1638229

# vim ifcfg-eth0 

HWADDR=00:0c:29:94:c8:08

TYPE=Ethernet

BOOTPROTO=static

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=yes

NAME=eth0

UUID=a5e6ae5c-dd71-48be-b374-ad64121bd785

# DEVICE=eno16777736

ONBOOT=yes

IPADDR=192.168.66.4

NETMASK=255.255.255.0

GATEWAY=192.168.66.1

DNS1=202.106.46.151

# DEVICE=eth0

将配置文件拷贝出来两份作为另外两个网卡的配置文件

# cp ifcfg-eth0 ifcfg-eth1

# cp ifcfg-eth0 ifcfg-eth2

编辑修改：

# vim ifcfg-eth1

HWADDR=00:0c:29:94:c8:12

TYPE=Ethernet

BOOTPROTO=static

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=yes

NAME=eth1

UUID=dfc9199c-7b47-4209-a396-109bf44e683a

ONBOOT=yes

IPADDR=192.168.67.4

NETMASK=255.255.255.0

# DEVICE=eth0

编辑修改

# vim ifcfg-eth2

HWADDR=00:0c:29:94:c8:1c

TYPE=Ethernet

BOOTPROTO=static

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=yes

NAME=eth2

UUID=020d86aa-548f-49c2-9cb0-f6cfffdb8219

# DEVICE=eno16777736

ONBOOT=yes

IPADDR=192.168.68.4

NETMASK=255.255.255.0

# DEVICE=eth0

开始为重命名做配置， 不是很懂的小伙伴请参考我的另一篇详细解说http://baoer7758.blog.51cto.com/8187563/1638229                 

# vi /etc/sysconfig/grub 

GRUB_TIMEOUT=5

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap crashkernel=auto net.ifnames=0 biosdevname=0 net.ifnames=1 biosdevname=1 net.ifnames=2 biosdevname=2 rhgb quiet"           //加粗为添加内容

GRUB_DISABLE_RECOVERY="true"

重新加载到启动中

# grub2-mkconfig -o /boot/grub2/grub.cfg 

Generating grub configuration file ...

Found linux image: /boot/vmlinuz-3.10.0-229.el7.x86_64

Found initrd image: /boot/initramfs-3.10.0-229.el7.x86_64.img

Found linux image: /boot/vmlinuz-0-rescue-9bede79b46bd4e9696b92a4ec68a97b1

Found initrd image: /boot/initramfs-0-rescue-9bede79b46bd4e9696b92a4ec68a97b1.img

done

重新启动系统reboot

查看网卡信息

# ifconfig 

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

        inet 192.168.66.4  netmask 255.255.255.0  broadcast 192.168.66.255

        inet6 fe80::20c:29ff:fe94:c808  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:94:c8:08  txqueuelen 1000  (Ethernet)

        RX packets 690  bytes 69262 (67.6 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 488  bytes 65725 (64.1 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.67.4  netmask 255.255.255.0  broadcast 192.168.67.255

        inet6 fe80::20c:29ff:fe94:c812  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:94:c8:12  txqueuelen 1000  (Ethernet)

        RX packets 129  bytes 15944 (15.5 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 26  bytes 3927 (3.8 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.68.4  netmask 255.255.255.0  broadcast 192.168.68.255

        inet6 fe80::20c:29ff:fe94:c81c  prefixlen 64  scopeid 0x20<link>

        ether 00:0c:29:94:c8:1c  txqueuelen 1000  (Ethernet)

        RX packets 127  bytes 15613 (15.2 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 25  bytes 3609 (3.5 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 4  bytes 420 (420.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 4  bytes 420 (420.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0