Solve CentOS ping nowhere

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


Network server restart times wrong


Ifcfg-eth0 view configuration is correct, ifconfig eth0 to view the current IP configuration is correct, ping is different


Troubleshooting steps:


1:service network restart error


View 2:ifconfig eth0 eth0 is configured properly


3:service NetworkManager stop


4:service network restart to restart the network to verify normal


Service network restart error