Openstack之用apt-get安装KVM

454luikty

首先必须在VMware Workstation中打开每个虚拟机的虚拟化功能，一般来说支不支持虚拟化，取决于你的物理机的cpu是否支持，必须先在物理机的bios中打开Intel-VT或者AMD-V选项，如果不知道cpu是否支持虚拟化，可以根据CPU型号自己查一下。



root@u-node3:/home/zxl# egrep -o "(vmx|svm)" /proc/cpuinfo
vmx
出现vmx则说明CPU为Intel系列支持intel-VT，如果是svm，则说明为AMD系列CPU，支持AMD-V虚拟化
ubuntu自带的source.list可能会安装失败，这里安装下载source.list,用sohu源和Ali云源
root@u-node3:/home/zxl#vim /etc/apt/sources.list
deb http://mirrors.sohu.com/ubuntu/ precise main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise main restricted
deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb http://mirrors.sohu.com/ubuntu/ precise universe
deb-src http://mirrors.sohu.com/ubuntu/ precise universe
deb http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb http://mirrors.sohu.com/ubuntu/ precise multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-security main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricted
deb http://mirrors.sohu.com/ubuntu/ precise-security universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-security universe
deb http://mirrors.sohu.com/ubuntu/ precise-security multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-security multiverse
deb http://extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

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


root@u-node3:/home/zxl# apt-get update

可以分别安装如下的软件
1、安装kvm/qemu
sudo apt-get install kvm qemu
2、安装libvirt
sudo apt-get install libvirt-bin libvirt-dev
3、网桥管理工具
sudo apt-get install bridge-utils
4、统一建模语言
sudo apt-get install uml-utilities
5、vnc 虚拟机查看工具
sudo apt-get install vncviewer vnc4server

qemu-kvm 和 qemu-system 是 KVM 和 QEMU 的核心包，提供 CPU、内存和 IO 虚拟化功能
libvirt-bin 就是 libvirt，用于管理 KVM 等 Hypervisor
virt-manager 是 KVM 图形化管理工具
bridge-utils 和 vlan，主要是网络虚拟化需要，KVM 网络虚拟化的实现是基于 linux-bridge 和 VLAN

Ubuntu 默认不安装图形界面，可以手工安装一下
sudo apt-get install xinit
sudo apt-get install gdm
sudo apt-get install kubuntu-deskt


安装KVM
root@u-node3:/home/zxl# apt-get install qemu-kvm ubuntu-vm-builder bridge-utils
启用KVM内核模块
root@u-node3:/home/zxl# modprobe kvm
root@u-node3:/home/zxl# modprobe kvm_intel
root@u-node3:/home/zxl# modprobe kvm_amd
验证有没有加载成功kvm模块
root@u-node4:/home/zxl#  lsmod | grep kvm
kvm_intel             144426  0
kvm                   468280  1 kvm_intel

检查kvm是否安装成功，输出如下则成功
root@u-node3:/home/zxl# kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
添加root用户进入kvm组
root@u-node3:/home/zxl# adduser root kvm


安装Libvirt
1：利用源码编译安装，但首先要自己安装各种依赖，很麻烦，不是很推荐，然后下载源码（http://libvirt.org/sources/）解压，用make:make install安装
2：利用apt-get安装，可以安装一系列的辅助工具，强烈建议这样安装

root@u-node3:/home/zxl# apt-get install libvirt-bin qemu virt-manager
安装完成后通过如下步骤检查是否成功
root@u-node4:/home/zxl# virsh list
Id    Name                           State
----------------------------------------------------

root@u-node4:/home/zxl# ps -aux |grep "libvirtd"
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root       3969  0.2  0.4 265044  9444 ?        Sl   09:30   0:00 /usr/sbin/libvirtd -d
root       4110  0.0  0.0   9392   932 pts/0    S+   09:31   0:00 grep --color=auto libvirtd

则表示安装成功


管理界面
root@u-node3:/home/zxl# virt-manager
可能会报错，No DBUS daemon Running,则采用下面的进程启动dbus进程
root@u-node3:/home/zxl# eval `dbus-launch --auto-syntax`
root@u-node3:/home/zxl# virt-manager


则表明安装成功（但用Xsell远程连接好像不能打开，没有反应）