CentOS7.2 network.service NetworkManager.service 衝突

今天經過NetworkManager Gui修改了網卡eth0的Gateway,後來reboot了虛擬機，而後奇怪的事情出現了.
1.ifconfig not found eth0

2.systemctl status network, 發現以下錯誤

Bringing up interface eth0:  Error: Connection activation failed: No suitable device found for this connection.

3.ifup eth0 報同樣的錯誤

google 發現 NetworkManager, network居然可能會發生衝突. 爲避免衝突能夠在 /etc/sysconfig/network-scripts/ifcfg-eth* 文件 Disabling Network Manager

TYPE=Ethernet
BOOTPROTO=none
DEVICE=eth0
ONBOOT=yes
#DNS2=114.114.114.114
#DNS1=127.0.0.1
IPADDR=10.0.0.57
PREFIX=24
GATEWAY=10.0.0.1
NM_CONTROLLED=no  # add this line

systemctl start network ok

或者:

1. systemctl stop NetworkManager

2. systemctl disable NetworkManager

3. systemctl start network