CentOS 7设置网卡开机自动启用

一、查看网卡配置

root权限

[root@dbsyn ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    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: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 08:94:ef:67:2e:7c brd ff:ff:ff:ff:ff:ff
    inet 10.1.10.3/24 brd 10.1.10.255 scope global eno1
       valid_lft forever preferred_lft forever
    inet6 fe80::173d:fad7:e606:525f/64 scope link
       valid_lft forever preferred_lft forever
3: eno2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 08:94:ef:67:2e:7d brd ff:ff:ff:ff:ff:ff
4: eno3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 08:94:ef:67:2e:7e brd ff:ff:ff:ff:ff:ff
5: eno4: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 08:94:ef:67:2e:7f brd ff:ff:ff:ff:ff:ff

可以看到已使用的网卡， 网卡名为eno1

二、修改网卡配置文件

网卡配置文件存放路径：/etc/sysconfig/network-script/ifcfg-<interface-name>

[root@dbsyn ~]# vim /etc/sysconfig/network-scripts/ifcfg-eno1

...
ONBOOT=yes
...

将ONBOOT=no改为ONBOOT=yes后，保存退出（:wq）

三、重启网络服务

[root@dbsyn ~]# service network restart

或者重启也行