[root@localhost ~]# nmcli d
DEVICE TYPE STATE CONNECTION
docker0 bridge connected docker0
virbr0 bridge connected virbr0
enp0s3 ethernet disconnected --
virbr0-nic tap connected virbr0-nic
enp0s8 ethernet disconnected --
lo loopback unmanaged --
查看之後,有兩個網卡enp0s3、enp0s8,不過state是disconnected
查詢網路的設定檔內容,其中ONBOOT=no,未於開機時自動啟用
[root@localhost network-scripts]# cat /etc/sysconfig/network-scripts/ifcfg-enp0s8
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=no
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=enp0s8
UUID=4c902474-f51e-4a7d-b1ee-f9752ad3c298
DEVICE=enp0s8
ONBOOT=no
DHCPV6C=yes
PEERDNS=yes
PEERROUTES=yes
除了直接改設定檔之外,還可以用nmtui來修改:
[root@localhost ~]# nmtui
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRkZVg8RCFt_LH6xRmefcNszgEm7m4TK2idEj7M4lmb3onnVeUSs2G_dn8O8Hk3iM2Q_TMgdoIvqt0zpfU4a5UsVxk_o4voCIfl0KVn1cBywN3fuUQGm-okR15_7kYlRnE7S8NcG-CYTc/s400/Image006.png)
選擇<Edit...>
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3VaOKNNXmkgIXHhgX9mSSArJ-ds1ym8kZ0eS9g7FFZWE-p79yAkA1vGrqzTBqOttNR3l0sGsTFxHU_3G7rkmybkc1lVbxlETbxp99-03aYs2dgHN0W4p5V98EFZl3pNz-mAcqABEJc1A/s1600/Image007.png)
將「Automatically connect」勾選,自動連接
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEZXikm_lECkKvZVSvIkzTrJcBT8G2qvZPuVVMWC-1rkUqhMZ9_4sX9MQ0eFFeCGY5FjDwcs061eafHlBBieq2ATETyUNXqNYOmblhk8DM_lUtaTki1hijGkb3Xa59WZltJNGw6LYHAn4/s640/Image008.png)
這次是以DHCP來取得IP,其實也可以指定IP的位置,在IPv4 CONFIGURATION的右邊點選Show,就有更詳細的設定如下圖:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyCdzxZkpZmbLSiNh1Jls_VqBPudmanyVHzdSgYv2Jh4LZSfJYUrs5aXzl8p8I3GTGPnXqUGpQ_OYcXt-Yn6Ci5bcAyGCBzU0m5E3FnK6z4S0vGcx5pfsWhV6kK7MH6UkWULtLU4KGFLE/s640/Image009.png)
重新啟用網路,就成功了。
[root@localhost ~]# systemctl restart network