Connection activation failed Device not managed by NetworkManager

写在前面：

       在做双网卡绑定的实验室，重启网络服务时会提示则个提示信息，（在安装centos是安装了NetworkManager，）搜到如下的内容解决到问题：

http://hi.baidu.com/doughtymild/blog/item/75a377ad678864184b36d6b4.html

 

感谢这位朋友提供技术分享

 

 

 

 

Connection activation failed Device not managed by NetworkManager

系统中有两个服务在管理网络，所以需要停掉一个，

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

2. Add Default Net Manager
chkconfig network on

Stop NetworkManager first
service NetworkManager stop

and then start Default Manager
service network restart


or you can change it easy:

system-config-network
uncheck the box that sets the eth0 as managed by NetworkManager and set IP info from there.

system-config-services
stop and disable NetworkManager , start and enable network

you have problem because both of NetworkManager and Network using same Network driver and default network blocking access for NetworkManager. if you disable NetworkManager your problem will disappeared after restart.