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$ sudo apt install qemu-kvm libvirt-bin virt-manager

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$ sudo virsh net-define network.xml

$ sudo virsh net-start network

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$ sudo virt-install –name myvm –ram 2048 –vcpu 2 –disk path=/var/lib/libvirt/images/myvm.img,size=10 –network network=default –graphics vnc,port=5901 –os-type=linux –os-variant=ubuntutrusty –cdrom=/path/to/ubuntu.iso

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$ sudo virt-install –name myvm –ram 2048 –vcpu 2 –disk path=/var/lib/libvirt/images/myvm.img,size=10 –network network=default –graphics vnc,port=5901 –os-type=linux –os-variant=ubuntutrusty –cdrom=/path/to/ubuntu.iso

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$ sudo virsh destroy myvm

$ sudo virsh undefine myvm

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$ sudo virsh start myvm

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$ sudo virsh shutdown myvm

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$ sudo virsh list

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$ sudo apt install virt-manager

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import libvirt

# ÅþÁ¬µ½ÍâµØµÄlibvirtÊØ»¤Àú³Ì
conn = libvirt.open()

# ½¨ÉèÐéÄâ»ú
def create_vm(name, ram, vcpu, disk_path, network, graphics):
    xml = '''
    <domain type='kvm'>
      <name>{}</name>
      <memory unit='KiB'>{}</memory>
      <vcpu placement='static'>{}</vcpu>
      <os>
        <type arch='x86_64' machine='pc-i440fx-2.9'>hvm</type>
        <boot dev='hd'/>
      </os>
      <devices>
        <disk type='file' device='disk'>
          <driver name='qemu' type='qcow2'/>
          <source file='{}'/>
          <target dev='vda' bus='virtio'/>
          <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
        </disk>
        <interface type='network'>
          <mac address='52:54:00:6f:65:94'/>
          <source network='{}'/>
          <model type='virtio'/>
          <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
        </interface>
        <graphics type='vnc' port='{}' autoport='no' listen='0.0.0.0'/>
      </devices>
    </domain>
    '''.format(name, ram, vcpu, disk_path, network, graphics)

    conn.createXML(xml, 0)

# ɾ³ýÐéÄâ»ú
def delete_vm(name):
    dom = conn.lookupByName(name)
    dom.destroy()
    dom.undefine()

# Æô¶¯ÐéÄâ»ú
def start_vm(name):
    dom = conn.lookupByName(name)
    dom.create()

# ×èÖ¹ÐéÄâ»ú
def stop_vm(name):
    dom = conn.lookupByName(name)
    dom.shutdown()

# Éó²éÐéÄâ»úÁбí
def list_vms():
    vms = conn.listDomainsID()
    for vm in vms:
        dom = conn.lookupByID(vm)
        print("Name: {}, ID: {}, State: {}".format(dom.name(), dom.ID(), dom.state()))

# ʾÀýÓ÷¨
create_vm('myvm', 2048, 2, '/var/lib/libvirt/images/myvm.img', 'default', '5901')
start_vm('myvm')
list_vms()
delete_vm('myvm')

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