vmware中centos报错
开启虚拟机莫名其妙就PING不通了，启动网卡时报以下错：Bringing up interface eth0:Error: Connection activation failed: Device not managed by NetworkManager or unavailable
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
于是关闭NetworkManager:
#service NetworkManager stop
再修改网卡的配置文件：
#vim /etc/sysconfig/network-scripts/ifcfg-eth0
将M_CONTROLLED=NO改为YES
重启网卡后正常
原因应该是NetworkManager服务与network服务冲突千万的
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