Openstack之用apt-get安裝KVM

首先必須在VMware Workstation中打開每一個虛擬機的虛擬化功能，通常來講支不支持虛擬化，取決於你的物理機的cpu是否支持，必須先在物理機的bios中打開Intel-VT或者AMD-V選項，若是不知道cpu是否支持虛擬化，能夠根據CPU型號本身查一下。

root@u-node3:/home/zxl# egrep -o "(vmx|svm)" /proc/cpuinfo 

vmx

出現vmx則說明CPU爲Intel系列支持intel-VT，若是是svm，則說明爲AMD系列CPU，支持AMD-V虛擬化

ubuntu自帶的source.list可能會安裝失敗，這裏安裝下載source.list,用sohu源和Ali雲源

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

能夠分別安裝以下的軟件
一、安裝kvm/qemu
sudo apt-get install kvm qemu
二、安裝libvirt
sudo apt-get install libvirt-bin libvirt-dev
三、網橋管理工具
sudo apt-get install bridge-utils
四、統一建模語言
sudo apt-get install uml-utilities
五、vnc 虛擬機查看工具
sudo apt-get install vncviewer vnc4server

qemu-kvm 和 qemu-system 是 KVM 和 QEMU 的核心包，提供 CPU、內存和 IO 虛擬化功能

libvirt-bin 就是 libvirt，用於管理 KVM 等 Hypervisor

virt-manager 是 KVM 圖形化管理工具

bridge-utils 和 vlan，主要是網絡虛擬化須要，KVM 網絡虛擬化的實現是基於 linux-bridge 和 VLAN

Ubuntu 默認不安裝圖形界面，能夠手工安裝一下
sudo apt-get install xinit
sudo apt-get install gdm
sudo apt-get install kubuntu-deskt

安裝KVM

root@u-node3:/home/zxl# apt-get install qemu-kvm ubuntu-vm-builder bridge-utils

啓用KVM內核模塊
root@u-node3:/home/zxl# modprobe kvm
root@u-node3:/home/zxl# modprobe kvm_intel
root@u-node3:/home/zxl# modprobe kvm_amd

驗證有沒有加載成功kvm模塊

root@u-node4:/home/zxl#  lsmod | grep kvm
kvm_intel             144426  0
kvm                   468280  1 kvm_intel

檢查kvm是否安裝成功，輸出以下則成功

root@u-node3:/home/zxl# kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used

添加root用戶進入kvm組

root@u-node3:/home/zxl# adduser root kvm

安裝Libvirt

1：利用源碼編譯安裝，但首先要本身安裝各類依賴，很麻煩，不是很推薦，而後下載源碼（http://libvirt.org/sources/）解壓，用make:make install安裝

2：利用apt-get安裝，能夠安裝一系列的輔助工具，強烈建議這樣安裝

root@u-node3:/home/zxl# apt-get install libvirt-bin qemu virt-manager

安裝完成後經過以下步驟檢查是否成功

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

則表示安裝成功

管理界面

root@u-node3:/home/zxl# virt-manager

可能會報錯，No DBUS daemon Running,則採用下面的進程啓動dbus進程

root@u-node3:/home/zxl# eval `dbus-launch --auto-syntax`

root@u-node3:/home/zxl# virt-manager

則代表安裝成功（但用Xsell遠程鏈接好像不能打開，沒有反應）