1. 背景介绍
在centos5的时候，我们习惯了eth0这样的网络设备命名，在centos6发现网络设备变成了em1这样的命名，到了CentOS 7版本对网卡的命名规则又进行了重新定义，因此，对于这个命名规则的修改，还是让很多人比较头疼，无法适应这种随机生成的网卡名称，下面就教大家如何将网卡固定修改为eth0，操作步骤也很简单；
2. 修改方法
- 进入到/etc/sysconfig/network-scripts/目录下，备份网卡文件
[[email protected] ~]# cd /etc/sysconfig/network-scripts/ [[email protected] 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 [[email protected] network-scripts]# cp ifcfg-ens33 ifcfg-ens33.bak [[email protected] network-scripts]# ll ifcfg-ens33* -rw-r--r--. 1 root root 347 Jul 27 11:41 ifcfg-ens33 -rw-r--r--. 1 root root 347 Jul 27 12:48 ifcfg-ens33.bak - 将网卡文件名称改为ifcfg-eth0，并修改网卡配置文件
[[email protected] network-scripts]# mv ifcfg-ens33 ifcfg-eth0 [[email protected] network-scripts]# ll ifcfg-eth0 -rw-r--r--. 1 root root 347 Jul 27 11:41 ifcfg-eth0 [[email protected] network-scripts]# cat ifcfg-eth0 TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=static DEFROUTE=yes IPV4_FAILURE_FATAL=no #将ens33改为eth0 NAME=eth0 UUID=7615d0b6-d6c2-46bf-9140-45083e4aed4b #将ens33改为eth0 DEVICE=eth0 ONBOOT=yes IPADDR=192.168.88.102 NETMASK=255.255.255.0 GATEWAY=192.168.88.2 - 修改grub文件，添加内核参数net.ifnames=0 biosdevname=0信息，使网卡名称修改为eth0
[[email protected] network-scripts]# cat /etc/sysconfig/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 rhgb net.ifnames=0 biosdevname=0 quiet" GRUB_DISABLE_RECOVERY="true" - 生成启动菜单，重新加载到启动中，并重启系统
[[email protected] network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-dc723d2d2d444cf0ae3794ab211366b8 Found initrd image: /boot/initramfs-0-rescue-dc723d2d2d444cf0ae3794ab211366b8.img done [[email protected] network-scripts]# reboot - 验证网卡是否成功修改为eth0
[[email protected] ~]# 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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 00:0c:29:b6:52:ed brd ff:ff:ff:ff:ff:ff inet 192.168.88.102/24 brd 192.168.88.255 scope global noprefixroute eth0 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:feb6:52ed/64 scope link valid_lft forever preferred_lft forever
原文地址：https://blog.51cto.com/14463906/2424156
时间： 2024-08-28 19:00:52