记一次Linux网络问题

出现的问题：CentOS 7 右上角网络连接图标消失

法1：

mv /var/lib/NetworkManager /var/lib/NetworkManager.bak

systemctl start NetworkManager.service

法2：

• service NetworkManager stop

• service network restart

• service NetworkManager start

 法3：

systemctl stop NetworkManager

systemctl disable NetworkManager

systemctl restart network

 法4：

chkconfig network off
 
chkconfig network on
 
service NetworkManager stop
 
service NetworkManager start

 法5：

systemctl enable NetworkManager.service

systemctl start NetworkManger.service