1，虚拟机设置
将网络适配器设置为NAT模式：
2，编辑虚拟网络
打开虚拟网络编辑器：
更改设置：
打开NAT设置，记住网关：
3，安装centos（不演示）
4，打开虚拟机设置网络
进入/etc/sysconfig/network-scripts/目录
[root@master ~]# cd /etc/sysconfig/network-scripts/
[root@master network-scripts]# ls
ifcfg-ens33 ifdown-eth ifdown-post ifdown-Team ifup-aliases ifup-ipv6 ifup-post ifup-Team init.ipv6-global
ifcfg-lo ifdown-ippp ifdown-ppp ifdown-TeamPort ifup-bnep ifup-isdn ifup-ppp ifup-TeamPort network-functions
ifdown ifdown-ipv6 ifdown-routes ifdown-tunnel ifup-eth ifup-plip ifup-routes ifup-tunnel network-functions-ipv6
ifdown-bnep ifdown-isdn ifdown-sit ifup ifup-ippp ifup-plusb ifup-sit ifup-wireless
[root@master network-scripts]#
编辑ifcfg-ens33文件设置网络：
[root@master network-scripts]# cat ifcfg-ens33
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=46d1b197-6d04-4a44-96c8-33bc10342c8e
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.200.129
GATEWAY=192.168.200.2
NETMASK=255.255.255.0
DNS1=192.168.200.2
PREFIX=24
NM_CONTROLLED=no
DNS=8.8.8.8
tip：将BOOTPROTO设为static，ONBOOT设为yes，IPADDR为自己设置的静态ip，GATEWAY设置为自己的网关，NETMASK设为255.255.255.0，DNS1=192.168.200.2，PREFIX=24，NM_CONTROLLED=no，DNS=8.8.8.8
5，重启网络
[root@master ~]# /etc/init.d/network restart
Restarting network (via systemctl): [ 确定 ]
[root@master ~]#
6，测试网络
ping www.baidu.com
[root@master network-scripts]# ping www.baidu.com
PING www.a.shifen.com (183.232.231.174) 56(84) bytes of data.
64 bytes from 183.232.231.174 (183.232.231.174): icmp_seq=1 ttl=128 time=52.4 ms
64 bytes from 183.232.231.174 (183.232.231.174): icmp_seq=2 ttl=128 time=75.0 ms
64 bytes from 183.232.231.174 (183.232.231.174): icmp_seq=3 ttl=128 time=55.2 ms
64 bytes from 183.232.231.174 (183.232.231.174): icmp_seq=4 ttl=128 time=76.7 ms
此时centos已经设置了静态ip并连接了网络。