RHEL7.1配置网络IP的三种方法

RHEL7里面的网卡命名方式从eth0,1,2的方式变成了enoXXXXX的格式。 en代表的是enthernet (以太网），o 代表的是onboard (内置），那一串数字是主板的某种索引编号自动生成，以便保证其唯一性。和原先的命名方式对比，这种新的方式比较长，难以记忆，不过优点在于编号唯一，做系统迁移的时候不容易出错。

1.修改/etc/sysconfig/network-scripts/eno16777728

查看你的网卡名称(本机是eno16777728):

[yuq@localhost 桌面]$ ifconfig 
eno16777728: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.3.8  netmask 255.255.255.0  broadcast 192.168.3.255
        inet6 fe80::20c:29ff:fee3:d015  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:e3:d0:15  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 30  bytes 4164 (4.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 520  bytes 44276 (43.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 520  bytes 44276 (43.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

编辑[yuq@localhost network-scripts]$ cat /etc/sysconfig/network-scripts/ifcfg-eno16777728 文件：

TYPE="Ethernet"
BOOTPROTO="none" # static静态IP dhcp动态IP none不指定
DEFROUTE="yes"    
IPV4_FAILURE_FATAL="yes"
IPV6INIT="yes"  #是否支持IPV6
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
NAME="eno16777728"  #网卡名称
UUID="15c19b00-1549-4b6e-92d6-6106b0ed91a5"
DEVICE="eno16777728"
ONBOOT="yes" #开启自动启用网络连接
HWADDR="00:0C:29:E3:D0:15" #
IPADDR="192.168.3.8" #ip地址
PREFIX="24"  #
GATEWAY="192.168.3.1" #网关    
#DNS1=192.168.1.1     #设置DNS
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_PRIVACY="no"

重启网卡并测试网络：
[root@linuxprobe Desktop]# systemctl restart network

2.图形工具nmtui
[root@linuxprobe Desktop]# nmtui
[root@linuxprobe Desktop]# systemctl restart network

3.终端执行命令：
[root@linuxprobe Desktop]# nm-connection-editor
[root@linuxprobe Desktop]# systemctl restart network