CentOS 7 自定義網卡名稱 、修改網卡名稱

修改網卡名稱

禁用網卡命名規則

# 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"
# --> 在 GRUB_CMDLINE_LINUX 這一項中後面添加 net.ifnames=0 biosdevname=0
# 原始內容：GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap net.ifnames=0 biosdevname=0 rhgb quiet"
GRUB_DISABLE_RECOVERY="true"

添加要修改的網卡名稱

# 先 ip link查看網卡的 MAC 地址，記錄
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 00:0c:29:1f:25:8b brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 00:0c:29:1f:25:9f brd ff:ff:ff:ff:ff:
    
# 新建網卡命名規則文件 
vim /etc/udev/rules.d/70-persistent-net.rules
# 寫入以下內容，需要修改的參數是 ATTR{address} 和 NAME
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:1f:25:9f", ATTR{type}=="1", KERNEL=="eth*", NAME="ens34"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:0c:29:1f:25:8b", ATTR{type}=="1", KERNEL=="eth*", NAME="ens33"

修改/添加網卡配置文件

# vim /etc/sysconfig/network-scripts/ifcfg-ens34
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
NAME="ens34"
DEVICE="ens34"
ONBOOT="yes"
NM_CONTROLLED="no"

更新 GRUB 配置文件，重啓生效

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