1.首先打开自己的电脑中的服务，启动VM开头的服务
2.网络和Internet设置->打开适配器选项,找到自己的网络，右击属性->共享，都画勾
3.将VM8启用
3.查看VM8的IP（我这一般设为共享后，会弹出提示，这只能设置IP为192.168.137.1）
4.打开VM虚拟机，选择你使用的操作系统右击，点击设置选项，选择NAT模式并选择启动时连接
5.选择完后点击虚拟机页面上的编辑进入虚拟网络编辑器 ，按如下配置，注意子网IP，网关IP中192.168.137.0，中137要和
上面查看自己电脑的VM8的IP在同一个网段
6.登陆虚拟主机，设置ip ,vi /etc/sysconfig/network-scripts/ifcfg-ens33
设置完重启网关service network restart
查看ip
7.yum -y install wget试一下
阿哦，报错了：
[root@mytest ~]# yum -y install wget
已加载插件：fastestmirror
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"
One of the configured repositories failed (未知),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:
1. Contact the upstream for the repository and get them to fix the problem.
2. Reconfigure the baseurl/etc. for the repository, to point to a working
upstream. This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).
3. Run the command with the repository temporarily disabled
yum --disablerepo=<repoid> ...
4. Disable the repository permanently, so yum won't use it by default. Yum
will then just ignore the repository until you permanently enable it
again or use --enablerepo for temporary usage:
yum-config-manager --disable <repoid>
or
subscription-manager repos --disable=<repoid>
解决办法：
vi /etc/resolv.conf 加入nameserver
# Generated by NetworkManager
nameserver 8.8.8.8
nameserver 8.8.4.4
search localdomain
说明：
文件/etc/resolv.conf 配置DNS 客户，它包含了主机的域名搜索顺序和DNS服务器的地址，每一行应包含一个关键字和一个或多个的由空格隔开的参数。
nameserver 表明DNS 服务器的IP 地址。可以有很多行的nameserver，每一个带一个I P 地址。在查询时就按nameserver 在本文件中的顺序进行，且只有当第一个nameserver 没有反应时才查询下面的nameserver.
domain 声明主机的域名。很多程序用到它，如邮件系统；当为没有域名的主
机进行DNS 查询时，也要用到。
8.然后就可以上网了
