Installation and use of KVM on Linux

I installed it on a VMware virtual machine

First, check whether the CPU supports virtual tables

grep ' VMX|SVM '/proc/cpuinfo--color//have support

Second, install KVM and the required packages and verify

Yum-y Install KVM virt-* libvirt//

Check if the installation was successful

Lsmod|grep KVM

Ls/dev/kvm

Third, network configuration

Cat/etc/sysconfig/network-scripts/ifcfg-br0

Device=br0

#HWADDR =00:0c:29:f2:0d:da

Type=ethernet

#UUID =e4728a54-13a5-48a2-8fcc-030eb15e789f

Onboot=yes

#NM_CONTROLLED =yes

Bootproto=none

ipaddr=192.168.10.20

netmask=255.255.255.0

gateway=192.168.10.2

Cat/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0

#HWADDR =00:0c:29:f2:0d:da

Type=ethernet

#UUID =e4728a54-13a5-48a2-8fcc-030eb15e789f

Onboot=yes

#NM_CONTROLLED =yes

Bootproto=none

#IPADDR =192.168.10.20

#NETMASK =255.255.255.0

#GATEWAY =192.168.10.2

Bridge=br0

Iv. load the NIC module and restart the network service

MODPROBE-RV e1000

Modprobe-v e1000

/etc/init.d/network restart

Chkconfig LIBVIRTD on

Five, install the virtual machine

Virt-install \

--connect qemu:///system \

--name=rhel-server-10.20 \

--ram=1024--vcpus=1 \

--os-type=linux \

--HVM \

--cdrom=/store/rhel-server-6.4-x86_64-dvd.iso \

--disk path=/store/kvm/rhel-server-10.20.img,size=20 \

--graphics VNC \

--network bridge=br0 \

--noautoconsole \

--debug

Six or one easy to use

Installation configuration via VNC

Virsh Vncdisplay rhel-server-10.20

Clone virtual Machine

Virt-clone--connect=qemu:///system-o rhel-server-10.20-n rhel-server-10.21-f/store/kvm/rhel-server-10.20.img-f/ storage/disk/rhel-server-10.20

Add a hard drive

Virsh attach-disk Virtual machine name source target

Eg:qemu-img create-f raw/storage/disk/vm_centos.img 50G

Virsh attach-disk vm_centos_6.5_x64/storage/disk/rhel-server-10.20.img VDA--config

Delete a hard disk

Virsh Detach-disk vm_centos_6.5_x64/storage/disk/rhel-server-10.20.img--config

KVM Add block device:

Qemu-img create-f raw/storage/disk/rhel-server-10.20.img 200G

Virsh Edit VMname

<disk type= ' file ' device= ' disk ' >

<driver name= ' qemu ' type= ' raw '/>

<source file= '/storage/disk/rhel-server-10.20.img '/>

<target dev= 'vda' bus= ' Virtio '/>

<address type= ' PCI ' domain= ' 0x0000 ' bus= ' 0x00 ' slot= ' 0x05 ' function= ' 0x0 '/>

</disk>

Dynamically Increase memory

Virsh Setmem rhel-server-10.20 8388608

Installation and use of KVM on Linux