0. 在Ubuntu系统中永久修改主机名也比较简单。主机名存放在/etc/hostname文件中,修改主机名时,编辑hostname文件,在文件中输入新的主机名并保存该文件即可
1.打开terminial
2.开启ssh
sudo apt-get update
sudo apt-get install openssh-server
sudo vi /etc/ssh/sshd_config"-->回车-->把配置文件中的"PermitRootLogin without-password"加一个"#"号,把它注释掉-->再增加一句"PermitRootLogin yes"-->保存，修改成功。
首先查找 /Permit >然后yy p >然后用delete键删除without-password > 然后ZZ保存退出
3.http://cn.archive.ubuntu.com/ 阿里云开源镜像站
/etc/apt/source-list
cat /etc/apt/sources.list | grep -v ^# | grep -v ^$
deb http://cn.archive.ubuntu.com/ubuntu/ trusty main restricteddeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty main restricteddeb http://cn.archive.ubuntu.com/ubuntu/ trusty-updates main restricteddeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-updates main restricteddeb http://cn.archive.ubuntu.com/ubuntu/ trusty universedeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty universedeb http://cn.archive.ubuntu.com/ubuntu/ trusty-updates universedeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-updates universedeb http://cn.archive.ubuntu.com/ubuntu/ trusty multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty multiversedeb http://cn.archive.ubuntu.com/ubuntu/ trusty-updates multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-updates multiversedeb http://cn.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiversedeb http://security.ubuntu.com/ubuntu trusty-security main restricteddeb-src http://security.ubuntu.com/ubuntu trusty-security main restricteddeb http://security.ubuntu.com/ubuntu trusty-security universedeb-src http://security.ubuntu.com/ubuntu trusty-security universedeb http://security.ubuntu.com/ubuntu trusty-security multiversedeb-src http://security.ubuntu.com/ubuntu trusty-security multiversedeb http://extras.ubuntu.com/ubuntu trusty maindeb-src http://extras.ubuntu.com/ubuntu trusty main#######这里没有trusty-backports ，这里trusty开头的总共有5项，trusty ，trusty-updates ，trusty-backports , trusty-security , trusty-backports
其中没一项中又有 main restricted universe multiverse 4项内容
4.设置root用户密码 //因为装机的时候直接建的是shyl账号，所以没有设置root用户的密码
sudo passwd root
[sudo] password for shyl: Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully5.开始安装kvm ##如果出现依赖包不能自动安装的时候，一般是/etc/apt/sources.list源出现了问题
5.1 apt-get install qemu-kvm
5.1.1 echo $? 返回结果为0，安装成功
5.2 apt-get install qemu-system //qemu-system-x86_64就是我们常用的qemu-kvm的命令行工具
5.2.2 echo $? 返回结果为0，安装成功
5.3 apt-get install libvirt-bin ///service libvirt-bin status
5.3.3 echo $? 返回结果为0，安装成功
5.4 apt-get install virt-manager
5.4.4 echo $? 返回结果为0，安装成功
5.5
apt-get install bridge-utils
Reading package lists... DoneBuilding dependency tree Reading state information... Donebridge-utils is already the newest version.bridge-utils set to manually installed.0 upgraded, 0 newly installed, 0 to remove and 429 not upgraded.5.6 apt-get install vlan