What should I do if centos cannot automatically obtain the IP address?

解决办法如下：

1、如果是图形界面，需要关闭NetworkManager服务

service NetworkManager stop
service network restart

因为该服务与network服务冲突。

2、编辑/etc/sysconfig/network-scripts/ifcfg-ethX文件

X代表网卡的序号

vim /etc/sysconfig/network-scripts/ifcfg-ethX

3、把ONBOOT=no改为ONBOOT=yes

这样就可以自动获取ip地址了。

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