def get_mgmt_ip_addr(cls, vm_name, ip_network):
mgmt_ip_network = netaddr.IPNetwork(ip_network)
iface_list = powershell.exec_powershell(
'get-vm', name=vm_name, select_clause='networkadapters'
)[0].NetworkAdapters
mgmt_ip_addr_list = []
for iface in iface_list:
for ip_network in iface['IPAddresses'].split():
if netaddr.IPAddress(ip_network) in mgmt_ip_network:
mgmt_ip_addr_list.append(ip_network)
if len(mgmt_ip_addr_list) == 1:
return mgmt_ip_addr_list[0]
elif len(mgmt_ip_addr_list) > 1:
raise exception.ConfigException(
'%s has two management IP addresses (%s) that are belong to '
'the same subnet. This is likely a configuration error' % (
vm_name, ', '.join(mgmt_ip_addr_list)))
else:
raise exception.ValueException(
'No management IP addresses are discovered')
def _get_virt_network():
try:
virt_network = importlib.import_module('virt.lib.%s.network' %
platform.system().lower())
except ImportError:
raise exception.ConfigException('Not supported OS %s' %
platform.system())
return virt_network
def validate(self, vswitch_list=None):
# Validate the pool
template_pool = storage.Pool('template')
vm_pool = storage.Pool('vm')
if not template_pool.exist:
raise exception.ConfigException('"template" pool not found')
if not vm_pool.exist:
raise exception.ConfigException('"vm" pool not found')
# Validate the network
if vswitch_list:
for vswitch in vswitch_list:
try:
network.get_vswitch(name=vswitch)
except exception.NotFoundException:
raise exception.ConfigException('vSwitch "%s" not found' %
vswitch)
return True
def validate(self, vswitch_list=None):
vswitch_list = vswitch_list or []
with LibvirtOpen() as conn:
try:
conn.storagePoolLookupByName('template')
conn.storagePoolLookupByName('vm')
except libvirt.libvirtError as err:
if 'Storage pool not found' in err.message:
raise exception.ConfigException(
'"template" and/or "vm" storage pools do not exist')
else:
raise
for vswitch in vswitch_list:
try:
conn.networkLookupByName(vswitch)
except libvirt.libvirtError as err:
if 'Network not found' in err.message:
raise exception.ConfigException(
'"%s" does not exist' % vswitch)
else:
raise
def _download(self):
"""Download the disk image from the URL"""
if not os.access(self.template_path['dir'], 0):
raise exception.ConfigException(
'Cannot find "template" pool at %s' %
self.template_path['dir'])
if not os.access(self.template_path['file'], 0):
log.info('Downloading the template image %s ... ' %
self.template_path['file'])
wget.download(url=self.template_path['url'],
out=self.template_path['file'])
print('\n') # workaround for line overlap of wget
return True
def get_mgmt_ip_addr(cls, vm_name, ip_network):
"""Return the management IP address of the virtual machine
Due to livirtd-python does not provide APIs for guest agent yet, use
shell command "virsh" to get the information.
Args:
vm_name (str): A name of the virtual machine
ip_network (str): IP address/prefix (x.x.x.x/x) for network where
the management IP address should be be long to
"""
mgmt_ip_addr_list = []
iface_list = cls._get_network(vm_name)
for iface in iface_list:
if 'ip-addresses' not in iface:
log.debug('No IP addresses detected on %s (%s)' %
(iface['name'], iface['hardware-address']))
continue
for ip_addr in iface['ip-addresses']:
if netaddr.IPAddress(
ip_addr['ip-address']) in netaddr.IPNetwork(
ip_network):
mgmt_ip_addr_list.append(ip_addr['ip-address'])
if len(mgmt_ip_addr_list) == 1:
return mgmt_ip_addr_list[0]
elif len(mgmt_ip_addr_list) > 1:
raise exception.ConfigException(
'%s has two management IP addresses (%s) that are belong to '
'the same subnet. This is likely a configuration error' %
(vm_name, ', '.join(mgmt_ip_addr_list)))
else:
raise exception.ValueException(
'No management IP addresses are discovered')
def __init__(self, file_ext, **kwargs):
self._file_ext = file_ext
storage = importlib.import_module('virt.lib.%s.storage' %
platform.system().lower())
template_pool = storage.Pool(name='template')
vm_pool = storage.Pool(name='vm')
if not template_pool.exist or not vm_pool.exist:
raise exception.ConfigException(
'template and/or vm pools do not exist')
self.template_path = {
'url':
self.url + '/' + self.name + '.' + template_pool.file_ext,
'dir':
template_pool.path,
'file':
os.path.join(template_pool.path,
self.name + '.' + template_pool.file_ext)
}
self.vm_dir = vm_pool.path
self._vm_manager = virtual_machine.get_vm_manager()
def create(self,
name=None,
mgmt_ip_addr=None,
test_ip_addr_dict=None,
cpu=1,
memory=512,
exist=None,
test_vf_dev_dict=None):
"""Create a virtual machine and power it up
Args:
name (str): A name of the virtual machine. If not given, will
use auto-generated honstame using "mgmt_ip_addr"
mgmt_ip_addr (str): Management IP address. If not given, "name"
must be given.
test_ip_addr_dict (dict): key=vswitch (network) name, value is
list of <IP addresses/prefix>
test_vf_dev_dict(dict): key=pci_device_id(VF), value is
list of <IP addresses/prefix>
cpu (int): A number of CPUs for the VM
memory (int): A size of the memory in MB
exist (str): A policy to handle if a virtual machine or disk
already exists. choices=[None|overwrite|reuse]
"""
# Download the image fromt he URL
self._download()
test_ip_addr_dict = test_ip_addr_dict or {}
vswitch_list = list(
k for k in test_ip_addr_dict.keys()
if k is not None) + \
['Management Network']
self.validate(vswitch_list=vswitch_list)
# Add a management network
vnic_list = [
network.get_vnic(network='Management Network',
mac_addr=test_network.get_mac_addr(
mgmt_ip_addr, True),
mgmt_iface=True)
]
# Add a test network
for _network, _test_ip_addr_list in test_ip_addr_dict.items():
if _network is None:
continue
for _test_ip_addr in _test_ip_addr_list:
vnic_list.append(
network.get_vnic(
network=_network,
mac_addr=test_network.get_mac_addr(_test_ip_addr)))
# Add a pci hostdev
for _pci_id, _test_ip_addr_list in test_vf_dev_dict.items():
for _test_ip_addr in _test_ip_addr_list:
vnic_list.append(
network.get_pci_vnic(
vnic_pci=_pci_id,
mac_addr=test_network.get_mac_addr(_test_ip_addr)))
# Get the disk file name and the virtual machine name
disk_file = os.path.join(self.vm_dir, name) + '.' + self.file_ext
name = self._get_name(mgmt_ip_addr=mgmt_ip_addr, name=name)
create_vm = False
if name in self.vm_manager.get_vm_list():
if exist == 'reuse':
log.info('Reuse the existing VM %s.' % name)
elif exist == 'overwrite':
log.info('Removing the existing virtual machine ... ')
self.remove(name)
create_vm = True
else:
raise exception.ConfigException(
'Virtual machine %s already exists' % name)
else:
create_vm = True
if create_vm:
# Copy the file
if os.access(disk_file, 0) and exist is None:
raise exception.ConfigException(
'Disk file %s already exists. You can force to create a '
'new virtual disk with "--exist" option' % disk_file)
elif os.access(disk_file, 0) and exist == 'reuse':
log.info('Reuse the existing virtual disk %s ' % disk_file)
else:
log.info('Cloning a virtual disk ... ')
shutil.copy(self.template_path['file'], disk_file)
time.sleep(10)
log.info('\tCompleted')
self.vm_manager.create(name=name,
disk_file=disk_file,
vnic_list=vnic_list,
cpu=cpu,
memory=memory)
else:
if platform.system().lower() == 'windows':
self.vm_manager.update(name=name,
vnic_list=vnic_list,
cpu=cpu,
memory=memory)
log.info('Powering up the virtual machine ... ')
self.vm_manager.power(name=name, oper='on')
log.info('Creating the virtual machine is completed')
def factory(cls, name, mode=None, **kwargs):
_network = BaseLinuxVSwitch(name=name)
forward_mode = None
forward_interface = None
ip_addr = None
br_iface = None
iface_list = None
virtual_port = None
if not mode: # Expect to get an existing switch
if _network.object is None:
raise exception.NotFoundException(
'vSwitch "%s" does not exist' % name)
vswitch_xml = ElementTree.fromstring(_network.object.XMLDesc())
if vswitch_xml.find('forward') is not None:
forward_mode = vswitch_xml.find('forward').get('mode')
forward_interface = vswitch_xml.find('forward').get('dev')
if vswitch_xml.findall('forward/interface') is not None:
iface_list = [
iface.get('dev') for iface in
vswitch_xml.findall('forward/interface')]
if vswitch_xml.find('ip') is not None:
_ip_addr = vswitch_xml.find('ip').get('address')
_prefix = vswitch_xml.find('ip').get('prefix')
ip_addr = _ip_addr + '/' + _prefix
if vswitch_xml.find('bridge') is not None:
br_iface = vswitch_xml.find('bridge').get('name')
if forward_mode == 'nat': # NAT
return NAT(name=name, br_iface=br_iface, ip_addr=ip_addr)
elif forward_mode == 'hostdev': # SR-IOV:
iface = vswitch_xml.find('forward/pf').get('dev')
return HostDev(name=name, iface=iface)
if iface_list: # MacVTAP
return MacVtap(
name=name, iface_list=iface_list, macvtap_mode=forward_mode)
if virtual_port: # OVS
return OVS(name=name, br_iface=br_iface)
if forward_interface: # routed
return Route(
name=name, br_iface=br_iface, iface=forward_interface)
if forward_mode:
return Bridge(
name=name, br_iface=br_iface,
)
raise exception.ValueException(
'Failed to detect the vswitch mode. XML output: %s'
% _network.get_xml()
)
if _network.object is not None:
# vswitch exists. Compare the mode, and if they are same, return
# that object otherwise raise exception
# _vswitch = cls.factory(name=name, **kwargs)
# if _vswitch._mode == mode:
# return _vswitch
raise exception.ConfigException('vSwitch %s already exists' % name)
# Creating a new vswitch
for subclass in BaseLinuxVSwitch._get_all_subclasses(BaseLinuxVSwitch):
if subclass.get_mode() == mode:
return subclass(name, **kwargs)
raise exception.ValueException('Invalid mode %s' % mode)
