【转】【centos】Bringing up interface eth0: Error:Connection activation failed:Device not managed by NetworkManager

转载：https://www.cnblogs.com/hxsyl/p/6018788.html

Bringing up interface eth0: Error:Connection activation failed:Device not managed by NetworkManager

Just follow the below steps and everything will be ok...

 

1. Remove Network Manager from startup Services.
#chkconfig NetworkManager off

2. Add Default Net Manager
#chkconfig network on

3.Stop NetworkManager first
#service NetworkManager stop

4.and then start Default Manager
#service network start