CentOS 7 修改網卡名稱 eno16777736 變成 eth0

這次準備來寫CentOS 7安裝MCRoute的順序
照慣例先安裝乾淨的CentOS 7在host上

阿怎麼會這樣？網卡名稱跟我原本習慣的不一樣
居然是什麼奇怪的eno16777736
那就動手改吧！
先來看個名稱先！

#ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN 
    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: eno16777736:  mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
    inet 192.168.25.135/24 brd 192.168.25.255 scope global dynamic eno16777736
       valid_lft 1209sec preferred_lft 1209sec
    inet6 fe80::20c:29ff:feaa:f320/64 scope link 
       valid_lft forever preferred_lft forever

然後進到eno16777736裡面修改他！

# vi /etc/sysconfig/network-scripts/ifcfg-eno16777736
HWADDR=xx:xx:xx:xx:xx:xx
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eno16777736
UUID=
ONBOOT=no

改成下面兩行

NAME=eth0
ONBOOT=yes

存檔退出，然後改變這個檔案的名稱

# mv ifcfg-eno16777736 ifcfg-eth0

之後告訴GRUB以後不要幫我取名

#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="rd.lvm.lv=centos/swap vconsole.font=latarcyrheb-sun16 rd.lvm.lv=centos/root crashkernel=auto  vconsole.keymap=us rhgb quiet"
GRUB_DISABLE_RECOVERY="true"

在GRUB_CMDLINE_LINUX裡面加上兩行

net.ifnames=0 
biosdevname=0

重載GRUB並且重開機

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

打完收工！