egrep -c '(svm|vmx)' /proc/cpuinfo

sudo apt update
sudo apt install qemu qemu-kvm libvirt-bin bridge-utils virt-manager

sudo systemctl start libvirtd.service
sudo systemctl enable libvirtd.service

auto br0
iface br0 inet dhcp # 网桥使用DHCP模式，从DHCP服务器获取IP
bridge_ports enp3s0 # 网卡名称，网桥创建前连接外部的网卡，可通过ifconfig命令查看，有IP地址的就是
bridge_stp on # 避免数据链路出现死循环
bridge_fd 0 # 将转发延迟设置为0

systemctl restart networking.service

DEFAULT_FORWARD_POLICY="ACCEPT"

systemctl restart ufw.service

sudo virt-install -n ubuntu_3
 --description "ubuntu_3" 
 --os-type=linux --os-variant=ubuntu17.10 --ram=1024 --vcpus=1 
 --disk path=/var/lib/libvirt/images/ubuntu_3.img,bus=virtio,size=50 # 磁盘位置，大小50G
 --network bridge:br0 # 这里网络选择了桥接模式
 --accelerate
 --graphics vnc,listen=0.0.0.0,keymap=en-us # VNC监听端口，注意要选择en-us作为key-map，否则键位布局可能会乱
 --cdrom /home/zzy/Downloads/ubuntu-18.04-live-server-amd64.iso # 安装ISO路径

sudo virt-install -n win10
 --description "win10"
 --os-type=win --os-variant=win10
 --ram=4096 --vcpus=2 
 --disk path=/var/lib/libvirt/images/win_10.img,bus=virtio,size=100
 --network bridge:br0
 --accelerate
 --graphics vnc,listen=0.0.0.0,keymap=en-us
 --cdrom =/home/zzy/Downloads/cn_windows_10_consumer_editions_version_1803_updated_march_2018_x64_dvd_12063766.iso
--cdrom=/home/zzy/Downloads/virtio-win.iso

sudo virus list

sudo virsh vncdisplay ubuntu_3 # ubuntu_3是虚拟机名称