[root@openstack-node1 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
删除HWADDR=""
ONBOOT=no修改为ONBOOT=yes
2.删除已经生产的网络设备相关的udev规则
rm -f /etc/udev/rules.d/70-persistent-net.rules
3. 关闭防火墙和selinux
sed -i s/^SELINUX=.*/SELINUX=disabled/g /etc/selinux/config
service iptables stop && chkconfig iptables off
service ip6tables stop && chkconfig ip6tables off