自定义网卡名
禁用网卡命名规则
# 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 这一项中后面添加 net.ifnames=0 biosdevname=0
# 原始内容：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"
添加要修改的网卡名称
# 先 ip link查看网卡的 MAC 地址，记录
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:
# 新建网卡命名规则文件
vim /etc/udev/rules.d/70-persistent-net.rules
# 写入以下内容，需要修改的参数是 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/添加网卡配置文件
# 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，重启生效