centos7更新网卡名称

墨蓝 2022-05-17 00:58 232阅读 0赞

**centos7****更新网卡名称**

**笔者在虚拟机中克隆了另一台centos7****，原网卡名为ens33****，为便于区分，修改新克隆主机网卡名为ens32**

\[root@cen7 ~\]\# cd /etc/sysconfig/network-scripts/

\[root@cen7 network-scripts\]\# ls

ifcfg-ens33  ifdown-bnep  ifdown-ipv6  ifdown-ppp     ifdown-Team      ifup          ifup-eth   ifup-isdn   ifup-post    ifup-sit       ifup-tunnel       network-functions

ifcfg-lo     ifdown-eth   ifdown-isdn  ifdown-routes  ifdown-TeamPort  ifup-aliases  ifup-ippp  ifup-plip   ifup-ppp     ifup-Team      ifup-wireless     network-functions-ipv6

ifdown       ifdown-ippp  ifdown-post  ifdown-sit     ifdown-tunnel    ifup-bnep     ifup-ipv6  ifup-plusb  ifup-routes  ifup-TeamPort  init.ipv6-global

\[root@cen7 network-scripts\]\# mv ifcfg-ens33 ifcfg-ens32

\[root@cen7 network-scripts\]\# vim ifcfg-ens32

\[root@cen7 network-scripts\]\# cat ifcfg-ens32

TYPE=Ethernet

PROXY\_METHOD=none

BROWSER\_ONLY=no

BOOTPROTO=none

IPADDR=192.168.88.132

PREFIX=24

GATEWAY=192.168.88.2

DOMAIN=localdomain

DEFROUTE=yes

IPV4\_FAILURE\_FATAL=yes

IPV6INIT=no

IPV6\_AUTOCONF=yes

IPV6\_DEFROUTE=yes

IPV6\_FAILURE\_FATAL=no

IPV6\_ADDR\_GEN\_MODE=stable-privacy

NAME=ens32

\#修改name

HWADDR=00:0C:29:CE:1E:BB

\#HWADDR需与MAC地址匹配，使用ip addr 查看

UUID=d480ca17-4d25-40e2-8ad6-e94785e4a0aa

DEVICE=ens32

\#修改device名称

ONBOOT=yes

\[root@cen7 network-scripts\]\# ip addr

1: lo: <LOOPBACK,UP,LOWER\_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo

valid\_lft forever preferred\_lft forever

inet6 ::1/128 scope host

valid\_lft forever preferred\_lft forever

2: ens33: <BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP group default qlen 1000

link/ether 00:0c:29:ce:1e:bb brd ff:ff:ff:ff:ff:ff

inet 192.168.88.132/24 brd 192.168.88.255 scope global noprefixroute ens33

valid\_lft forever preferred\_lft forever

inet6 fe80::20c:29ff:fece:1ebb/64 scope link

valid\_lft forever preferred\_lft forever

CentOS7使用了“一致性网络命名方法”，将网卡名截断为前5个字符，即此处的eno33。

修改网卡名称必须关闭“一致性网络命名方法” ，并更新GRUB、内核配置。

**编辑“/etc/default/grub****”，添加net.ifnames=0 biosdevname=0     **

\[root@cen7 network-scripts\]\# 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"

**更新GRUB****、内核配置**

\[root@cen7 network-scripts\]\# grub2-mkconfig -o /boot/grub2/grub.cfg

Generating grub configuration file ...

Found linux image: /boot/vmlinuz-3.10.0-862.el7.x86\_64

Found initrd image: /boot/initramfs-3.10.0-862.el7.x86\_64.img

Found linux image: /boot/vmlinuz-0-rescue-84ef83f84857413b91d84eb83fc8c339

Found initrd image: /boot/initramfs-0-rescue-84ef83f84857413b91d84eb83fc8c339.img

done

**重启可以发现，已然更新成功。**

\[root@cen7 network-scripts\]\# reboot

\[root@cen7 ~\]\# ip addr

1: lo: <LOOPBACK,UP,LOWER\_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo

valid\_lft forever preferred\_lft forever

inet6 ::1/128 scope host

valid\_lft forever preferred\_lft forever

2: ens32: <BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP group default qlen 1000

link/ether 00:0c:29:ce:1e:bb brd ff:ff:ff:ff:ff:ff

inet 192.168.88.132/24 brd 192.168.88.255 scope global noprefixroute ens32

valid\_lft forever preferred\_lft forever

inet6 fe80::20c:29ff:fece:1ebb/64 scope link

valid\_lft forever preferred\_lft forever

\[root@cen7 ~\]\#

centos7更新网卡名称

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