Solve CentOS ping failure

Solve CentOS ping failure

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

An error is reported when the network server is restarted.

Ifcfg-eth0 to view the configuration is correct, ifconfig eth0 to view the current ip configuration is also correct, that is, ping different

Solution:

1: service network restart Error

2: ifconfig eth0 check whether eth0 configuration is normal

3: service NetworkManager stop

4: service network restart network verification is normal

Method/step

1. Service network restart Error
   

   Ifconfig eth0 check whether eth0 configuration is normal

2. 
   Service NetworkManager stop

4. 
   
   

   Service network restart network verification is normal (this process may take half a minute, please be patient)

Service network restart network verification is normal