3 准备 KVM 实验环境

1.配置/etc/apt/sources.list注释掉国外原块选中ctrl+v、shift+3（#）、esc 2次

deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

2.刷新包索引
sudo apt-get update

3.安装 KVM 需要的包
sudo apt-get install qemu-kvm qemu-system libvirt-bin virt-manager bridge-utils vlan -y

4.安装图形界面

sudo apt-get install xinit -y
sudo apt-get install gdm -y
sudo apt-get install kubuntu-desktop -y

5.Ubuntu 默认是不允许 root 通过 ssh 直接登录的，可以修改 /etc/ssh/sshd_config，设置
PermitRootLogin yes

6.然后重启 ssh 服务即可service ssh restart，显示如下
ssh stop/waiting
ssh start/running, process 2763

7.Ubuntu 启动后，用以下命令确认 CPU 支持虚拟化 egrep -o '(vmx|svm)' /proc/cpuinfo，显示如下
svm
svm
svm
svm

8.确认 Libvirtd 服务已经启动service libvirt-bin status，显示如下
libvirt-bin start/running, process 1478

本文转载https://www.cnblogs.com/CloudMan6/p/5240770.html