启动networkservice时出现的错误
Restarting network (via systemctl): Job for network.service failed. See systemctl status network.service and journalctl -xn for details.
按照要求查看错误信息
$ sudo systemctl status network.service
network.service - LSB: Bring up/down networking
Loaded: loaded (/etc/rc.d/init.d/network)
Active: failed (Result: exit-code) since Fri 2017-03-22 15:31:20 EDT; 43s ago
Process: 2641 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)
localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain network[2641]: RTNETLINK answers: File exists
Mar 22 15:31:20 localhost.localdomain systemd[1]: network.service: control process exited, code=exited status=1
Mar 22 15:31:20 localhost.localdomain systemd[1]: Failed to start LSB: Bring up/down networking.
Mar 22 15:31:20 localhost.localdomain systemd[1]: Unit network.service entered failed state.
如何解决呢 经过几个小时的查找资料终于解决了
首先解决 Failed to start LSB: Bring up/down networking.
这个错误一般是HWADDR错误
首先输入 ip addr
进入 cd /etc/sysconfig/network-scripts 目录
vim ifcfg-ens**
Linux一般作为服务器，所以ip可以按照你的需求来设置
如果是虚拟机 网关则要与主机网关一致
主机网关的查看
进入cmd 命令窗口
输入 ipconfig /all
ifcfg-ens**修改好了之后
启动network 成功显示
[root@localhost network-scripts]# service network restart
Restarting network (via systemctl): [ 确定 ]成功启动network之后可能会遇到
主机ping不通虚拟机 虚拟机可以ping通主机的情况
网上大部分解决办法都是说切换成桥接模式
其实切换成桥接模式也不一定可以解
主机ping不通虚拟机 虚拟机可以ping通主机这种情况最有可能是虚拟的ip和网络适配器的ip不在一个网段上，当主机想要ping虚拟机时，先得经过VM8 但是VM8得ip并不是和虚拟机在同一网段上，所有就找不到虚拟机，就会提示访问超时。
所以解决办法就是将VM8的ip设置成与虚拟机ip地址在同一网段上
然后主机可以ping通虚拟机了
