1、查看Centos7系统默认的网卡配置(eno16777736)
[root@server ~]# ifconfig eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 #系统默认的网卡名称 inet 172.16.0.2 netmask 255.255.0.0 broadcast 172.16.255.255 inet6 fe80::20c:29ff:fefa:dbfa prefixlen 64 scopeid 0x20<link> ether 00:0c:29:fa:db:fa txqueuelen 1000 (Ethernet) RX packets 6699 bytes 8261881 (7.8 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 3006 bytes 215704 (210.6 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 0 (Local Loopback) RX packets 25200 bytes 1468912 (1.4 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 25200 bytes 1468912 (1.4 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root@server ~]#
2、编辑centos7系统默认的网卡配置文件,将NAME、DEVICE选项修改为eth0
[root@server ~]# vi /etc/sysconfig/network-scripts/ifcfg-eno16777736 TYPE=Ethernet BOOTPROTO=none TYPE=Ethernet BOOTPROTO=none TYPE=Ethernet BOOTPROTO=none DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=noNAME=eno16777736 此处修改为#NAME=eth0UUID=68062773-e078-4f64-8df6-3cbdf4730a4bDEVICE=eno16777736 此处修改为#DEVICE=eth0ONBOOT=yes DNS1=192.168.1.1 DNS2=114.114.114.114 IPADDR=172.16.0.2 PREFIX=16 IPADDR1=172.16.0.4 PREFIX1=16 IPADDR2=172.16.0.5 PREFIX2=16 GATEWAY=172.16.0.1
3、将Centos7系统网卡配置文件ifcfg-eno16777736重命名为ifcfg-eth0
[root@server ~]# mv /etc/sysconfig/network-scripts/ifcfg-eno16777736 /etc/sysconfig/network-scripts/ifcfg-eth0
4、更改/etc/default/grub启动菜单传递给内核的参数,在GRUB_CMDLINE_LINUX变量中加入“net.ifnames=0 biosdevname=0”
[root@server ~]# ls -ld /etc/sysconfig/grub lrwxrwxrwx. 1 root root 17 Aug 26 2017 /etc/sysconfig/grub -> /etc/default/grub [root@server ~]# vi /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" #添加GRUB_CMDLINE_LINUX变量net.ifnames=0 biosdevname=0GRUB_DISABLE_RECOVERY="true"
5、运行grub2-mkconfig -o /boot/grub2/grub.cfg命令重新生成grub菜单并更新内核参数
[root@server ~]# 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-f818c03720a04698929d06982f96d567 Found initrd image: /boot/initramfs-0-rescue-f818c03720a04698929d06982f96d567.img done
6、修改/etc/udev/rules.d/90-eno-fix.rules配置文件,将NAME=" eno16777736"修改为NAME="eth0"
[root@server ~]# cat /etc/udev/rules.d/90-eno-fix.rules # This file was automatically generated on systemd update SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:fa:db:fa", NAME=" eno16777736" [root@server ~]# sed -i 's#NAME="eno16777736"#NAME="eth0"#g' /etc/udev/rules.d/90-eno-fix.rules [root@server ~]# cat /etc/udev/rules.d/90-eno-fix.rules # This file was automatically generated on systemd updateSUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:fa:db:fa", NAME="eth0" #修改NAME变量为eth0
7、重启Centos7系统,完成网卡改名
[root@server ~]# reboot
8、验证Centos7系统网卡改名的结果
[root@server ~]# ifconfigeth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 #查看系统网卡名称已经设置为eth0 inet 172.16.0.2 netmask 255.255.0.0 broadcast 172.16.255.255 inet6 fe80::20c:29ff:fefa:dbfa prefixlen 64 scopeid 0x20<link> ether 00:0c:29:fa:db:fa txqueuelen 1000 (Ethernet) RX packets 339 bytes 28141 (27.4 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 190 bytes 25047 (24.4 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 8034 bytes 469008 (458.0 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 8034 bytes 469008 (458.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root@server ~]#
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