安装完Centos7系统，网卡命名跟之前发生了变化，[root@localhost ~]# ifconfig eno16777984: flags=4163<UP,BROADCAST,RUNNING,
安装完Centos7系统，网卡命名跟之前发生了变化，
[root@localhost ~]# ifconfig eno16777984: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.8.1.5 netmask 255.255.255.0 broadcast 10.8.1.255 inet6 fe80::250:56ff:fead:e8 prefixlen 64 scopeid 0x20<link> ether 00:50:56:ad:00:e8 txqueuelen 1000 (Ethernet)为了方便使用，将eno16777984修改为eth0。
1.先编辑网卡的配置文件将里面的NAME和DEVICE项修改为eth0
[root@localhost ~]# cd /etc/sysconfig/network-scripts/[root@localhost network-scripts]# vi ifcfg-eno16777984 TYPE="Ethernet"BOOTPROTO="none"DEFROUTE="yes"IPV4_FAILURE_FATAL="no"IPV6INIT="yes"IPV6_AUTOCONF="yes"IPV6_DEFROUTE="yes"IPV6_FAILURE_FATAL="no"NAME="eth0"UUID="71646465-8512-4bc9-805d-5ae2306f570c"DEVICE="eth0"ONBOOT="yes"IPADDR="10.8.1.5"PREFIX="24"GATEWAY="10.8.1.1"DNS1="202.103.24.68"IPV6_PEERDNS="yes"IPV6_PEERROUTES="yes"IPV6_PRIVACY="no"2.将ifcfg-eno16777984重命名为ifcfg-eth0
mv ifcfg-eno16777984 ifcfg-eth03.禁用该可预测命名规则，通过编辑/etc/default/grub并加入“net.ifnames=0 biosdevname=0 ”到GRUBCMDLINELINUX变量来实现。
[root@localhost network-scripts]# vi /etc/default/grub GRUB_TIMEOUT=5GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"GRUB_DEFAULT=savedGRUB_DISABLE_SUBMENU=trueGRUB_TERMINAL_OUTPUT="console"GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root net.ifnames=0 biosdevname=0 rd.lvm.lv=centos/swap rhgb quiet"GRUB_DISABLE_RECOVERY="true"4.运行命令grub2-mkconfig -o /boot/grub2/grub.cfg 来重新生成GRUB配置并更新内核参数。
[root@localhost network-scripts]# grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ...Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.imgFound linux image: /boot/vmlinuz-0-rescue-10db1bc4126f456c8d8bfd10eb1ebf9bFound initrd image: /boot/initramfs-0-rescue-10db1bc4126f456c8d8bfd10eb1ebf9b.imgdone5.重启服务器。
