KVM Kernel based virtual machine simple tutorial

KVM (kernel-based Virtual http://www.aliyun.com/zixun/aggregation/39569.html ">machine") http://www.linux-kvm.org/, A kernel based virtual machine, with QEMU (processor virtual software), requires CPU-enabled virtualization (and the Virtualization option is turned on in the BIOS), which can be more than 80% more efficient than the physical machine. In addition, it supports SMP very well.

Contrast

1, VMware's comprehensive function, set overall, the speed is relatively the slowest;
2, VirtualBox more efficient than VMware, the most Chinese users;
3, KVM overall efficiency is highest.

System Requirements

How do you find out if your system can run KVM? Need a processor that supports virtualization, check the way here are two kinds:

Here is a list of compatible KVM processors (http://en.wikipedia.org/wiki/X86_virtualization#AMD_virtualization_.28AMD-V.29) to see if your processor is in it.

You can also check/proc/cpuinfo, if you see VMX or SMX in the CPU flags field, your processor supports KVM.

Get KVM

Apt://qemu-kvm

Administrative Tools (cli--command line or desktop--desktop or web--network)

There are several active development management tools, reference Http://www.linux-kvm.org/page/Management_Tools

Desktop

The Ubuntu Warehouse has QT4 Aqemu.

Apt://aqemu

GTK Virtual Machine Manager

Apt://virt-manager

Corresponds to the part of the 8.04 Hardy

Download the latest KVM

Code: TAR-XZVF qemu-kvm-0. X.x.tar.gz

Packages needed:

Code:
sudo apt install gcc libsdl1.2-dev zlib1g-dev libasound2-dev linux-kernel-headers pkg-config libgnutls-dev libpci1 Pciutils-dev

Three steps:

Code:

CD qemu-kvm-0. x.x
./configure--PREFIX=/USR/LOCAL/KVM
Make
sudo make install

Load the KVM module after installation

Code:

sudo modprobe KVM
sudo modprobe kvm-intel//If you're an Intel processor, use this.
sudo modprobe kvm-amd//If you have an AMD processor, use this.

That's it.