网络配置如下：

root@ubuntu:~# cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto ens33
iface  ens33 inet static 
address 192.168.146.137
gateway 192.168.146.1
netmask 255.255.255.0
dns-nameservers 114.114.114.114

root@ubuntu:~# ip addr flush ens33
root@ubuntu:~# 
root@ubuntu:~# systemctl restart networking.service
root@ubuntu:~# 
root@ubuntu:~# ping www.baidu.com
PING www.a.shifen.com (14.215.177.39) 56(84) bytes of data.
64 bytes from 14.215.177.39 (14.215.177.39): icmp_seq=1 ttl=56 time=35.4 ms
64 bytes from 14.215.177.39 (14.215.177.39): icmp_seq=2 ttl=56 time=35.0 ms

 xshell远程连接虚拟机：
1、设置root密码

2、安装sshd服务并进行文件配置