def create_vm(self, ip, preferred_hv_host=None, preferred_name=None):
"""
Creates a guest VM on the Physical Topology and returns the Guest
object representing the VM as part of the virtual topology.
:param ip: str IP Address to use for the VM (required)
:param preferred_hv_host: str: Hypervisor to use, otherwise the least-loaded HV host is chosen.
:param preferred_name: str: Name to use for the VM. Otherwise one is generated.
:return: Guest
"""
self.physical_topology_manager.LOG.debug("Creating VM on IP: " + str(ip))
if preferred_hv_host is None:
# Pick the HV with the fewest running VMs
least_busy_hv = None
for hv in self.physical_topology_manager.hypervisors.itervalues():
if least_busy_hv is None or least_busy_hv > hv.get_vm_count():
least_busy_hv = hv
if least_busy_hv is None:
raise ObjectNotFoundException('No suitable hypervisor found to launch VM')
start_hv = least_busy_hv
else:
if preferred_hv_host not in self.physical_topology_manager.hypervisors:
raise ObjectNotFoundException('Requested host to start VM: ' + preferred_hv_host + ' not found')
start_hv = self.physical_topology_manager.hypervisors[preferred_hv_host]
if preferred_name is not None:
vm_name = preferred_name
else:
vm_name = 'vm_' + str(VirtualTopologyManager.global_vm_id)
VirtualTopologyManager.global_vm_id += 1
self.physical_topology_manager.LOG.debug("Starting VM with name: " + vm_name + " and IP: " +
str(ip) + " on hypervisor: " + start_hv.name)
new_vm = start_hv.create_vm(vm_name)
new_vm.create_interface('eth0', ip_list=[IP.make_ip(ip)])
return Guest(new_vm)
def do_extra_config_host_for_process_control(self, cfg_map):
self.num_id = cfg_map['num_id']
self.my_ip = cfg_map['my_ip']
self.unique_id = uuid.UUID('urn:uuid:' + cfg_map['uuid'])
self.zookeeper_ips = [IP.make_ip(s) for s in cfg_map['zookeeper_ips'].split(',')]
