kvm--Simple article

KVM Installation Readiness:

Linux operating system, Centos6.6 is used here.

The simplest is to install the desktop environment tick virtualization

To install a KVM dependency package on an existing system:

Yum-y groupinstall "Desktop" #安装gnome桌面

Yum-y Install qemu-kvm.x86_64 #安装KVM模块

Yum-y Install qemu-kvm-tools.x86_64 #KVM调试工具

Yum-y install Python-virtinst.noarch #python组件 to record the XML file when the VM was created

Yum-y Install qemu-img.x86_64 #qemu组件, create disks and start virtual machines

Yum-y Install bridge-utils.x86_64 #网络支持工具

Yum-y Install Libvirt #虚拟机管理工具

Yum-y Install Virt-manager #图形界面管理工具

Yum-y Install Libguestfs-tools #安装管理工具

See if the operating system supports virtualization

Intel looks at the following ways:

Cat/proc/cpuinfo |grep VMX

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Here's how AMD looks:

Cat/proc/cpuinfo |grep SVM

See if the KVM module is installed

Lsmod |grep KVM

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Simple configuration of KVM:

To configure the virtual network card:

Vim-o/etc/sysconfig/network-scripts/ifcfg-{eth0,br0}

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Restart the service:

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To see if the configuration was successful:

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Managing KVM Virtual Machines:

Manage graphical interfaces:

Virt-manager bring up graphical interface management:

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To create a storage pool:

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To create a mirrored storage pool:

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Mirrored mount Directory:

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To create a storage volume:

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The steps to create a virtual machine are as follows:

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To manage the command line:

Help

Virsh-h

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To view the KVM configuration file storage directory:

ls/etc/libvirt/qemu/

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To view the status of a virtual machine:

Virsh List--all

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Confirm that the switch service is running:

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Virtual Machine shutdown:

Virsh shutdown CentOS

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Virtual Machine Boot:

Virsh start CentOS

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Forced power off of virtual machines:

Virsh Destroy CentOS

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To start a virtual machine from a configuration file:

Virsh Create/etc/libvirt/qemu/centos

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To suspend a virtual machine:

Virsh suspend CentOS

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To view the status of a virtual machine:

Virsh List--all

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To restore a virtual machine:

Virsh Resume CentOS

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Configure the virtual machine to accompany the host startup:

Virsh autostart CentOS

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To export a configuration file for a virtual machine:

Virsh dumpxml CentOS >/etc/libvirt/qemu/centos1.xml

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Removal of virtual machines:

Virsh shutdown CentOS

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Virsh undefine CentOS

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To restore a virtual machine from a backup:

Cd/etc/libvirt/qemu

MV Centos1.xml Centos.xml

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To redefine a virtual machine:

Virsh define CentOS

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To modify the configuration information for a virtual machine:

Vim/etc/libvirt/qemu/centos.xml

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Virsh Edit CentOS

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KVM File Management:

To view the current disk format:

Qemu-img info/var/lib/libvirt/images/centos.img

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Turn off the virtual machine and convert the disk format.

Virsh shutdown CentOS

Qemu-img convert-f Raw-o Qcow2/var/lib/libvirt/imagers/centos.img/var/lib/libvirt/imagers/centos.qcow2

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To edit a configuration file:

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Using the cat command:

Virt-cat-a/var/lib/libvirt/imagers/centos.qcow2/etc/sysconfig/network

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Using the VIM command

Virt-edit-a/var/lib/libvirt/imagers/centos.qcow2/etc/resolv.conf

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To view disk information for a virtual machine:

Virt-df-h CentOS

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Cloning of virtual machines:

To view the status of a virtual machine:

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Cloning:

Virt-clone-o centos-n centos2-f/var/lib/libvirt/imagers/centos.qcow2

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To view the status of a virtual machine:

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To start the test:

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Snapshots of virtual machines:

To create a snapshot:

Virsh snapshot-create CentOS

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To view virtual machine snapshot version information:

Virsh snapshot-current CentOS

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To view snapshot information:

Virsh snapshot-list CentOS

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Revert to Snapshot:

Virsh Snapshot-revert CentOS 1441287546

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To delete a snapshot:

Virsh Snapshot-delete CentOS 1441287546

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This is the general practice.

If there is an error, please let me know, thank you.

This article is from the "XXX" blog, please be sure to keep this source http://moumou.blog.51cto.com/9995443/1691101

kvm--Simple article