def _Create(self):
"""Create a Rackspace instance."""
with tempfile.NamedTemporaryFile(dir=vm_util.GetTempDir(),
prefix='user-data') as tf:
with open(self.ssh_public_key) as f:
public_key = f.read().rstrip('\n')
script = CLOUD_CONFIG_TEMPLATE.format(self.user_name, public_key)
tf.write(script)
tf.flush()
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
create_cmd = self._GetCreateCommand()
create_cmd.extend(
['--config-drive', 'true', '--user-data', tf.name, self.name])
stdout, _, _ = vm_util.IssueCommand(create_cmd, env=env)
instance = util.ParseNovaTable(stdout)
if 'id' in instance:
self.id = instance['id']
else:
raise errors.Resource.RetryableCreationError(
'There was a problem trying to create instance %s' %
self.name)
if not self._WaitForInstanceUntilActive():
raise errors.Resource.RetryableCreationError(
'Failed to create instance')
def AddMetadata(self, **kwargs):
"""Adds metadata to the Rackspace VM"""
if not kwargs:
return
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
cmd = [FLAGS.nova_path, 'meta', self.id, 'set']
for key, value in kwargs.iteritems():
cmd.append('{0}={1}'.format(key, value))
vm_util.IssueCommand(cmd, env=env)
def _Exists(self):
"""Returns true if the volume exists."""
nova_env = os.environ.copy()
nova_env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
getdisk_cmd = [FLAGS.nova_path, 'volume-show', self.name]
stdout, _, _ = vm_util.IssueCommand(getdisk_cmd, env=nova_env)
if stdout.strip() == '':
return False
volume = util.ParseNovaTable(stdout)
return 'status' in volume and volume['status'] == 'available'
def _Exists(self):
"""Returns true if the VM exists."""
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
getinstance_cmd = [FLAGS.nova_path, 'show', self.id]
stdout, stderr, _ = vm_util.IssueCommand(getinstance_cmd, env=env)
if stdout.strip() == '':
return False
instance = util.ParseNovaTable(stdout)
return (instance.get('OS-EXT-STS:task_state') == 'deleting'
or instance.get('status') == 'ACTIVE')
def Detach(self):
"""Detaches the disk from a VM."""
nova_env = os.environ.copy()
nova_env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
detach_cmd = [
FLAGS.nova_path,
'volume-detach',
self.attached_vm_name,
self.id]
vm_util.IssueRetryableCommand(detach_cmd, env=nova_env)
self.attached_vm_name = None
def _GetFlavorDetails(self):
"""Retrieves details about the flavor used to build the instance.
Returns:
A dict of properties of the flavor used to build the instance.
"""
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
flavor_show_cmd = [FLAGS.nova_path, 'flavor-show', self.machine_type]
stdout, _, _ = vm_util.IssueCommand(flavor_show_cmd, env=env)
flavor_properties = util.ParseNovaTable(stdout)
return flavor_properties
def _PostCreate(self):
"""Get the instance's data."""
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
getinstance_cmd = [FLAGS.nova_path, 'show', self.id]
stdout, _, _ = vm_util.IssueCommand(getinstance_cmd, env=env)
instance = util.ParseNovaTable(stdout)
if 'status' in instance and instance['status'] == 'ACTIVE':
self.ip_address = instance['accessIPv4']
self.ip_address6 = instance['accessIPv6']
self.internal_ip = instance['private network']
else:
raise errors.Error('Unexpected failure.')
def _WaitForDiskUntilAttached(self, vm, max_retries=30, poll_interval_secs=5):
"""Wait until volume is attached to the instance."""
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
volume_show_cmd = [FLAGS.nova_path, 'volume-show', self.id]
for _ in xrange(max_retries):
stdout, _, _ = vm_util.IssueCommand(volume_show_cmd, env=env)
volume = util.ParseNovaTable(stdout)
if 'attachments' in volume and vm.id in volume['attachments']:
return True
time.sleep(poll_interval_secs)
return False
def _WaitForInstanceUntilActive(self, max_retries=720, poll_interval_secs=5):
"""Wait until instance achieves non-transient state."""
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
getinstance_cmd = [FLAGS.nova_path, 'show', self.id]
for _ in xrange(max_retries):
time.sleep(poll_interval_secs)
stdout, _, _ = vm_util.IssueCommand(getinstance_cmd, env=env)
instance = util.ParseNovaTable(stdout)
if 'status' in instance and instance['status'] != 'BUILD':
return instance['status'] == 'ACTIVE'
return False
def _Create(self):
"""Creates the volume."""
nova_env = os.environ.copy()
nova_env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
create_cmd = [
FLAGS.nova_path,
'volume-create',
'--display-name', self.name,
'--volume-type', DISK_TYPE[self.disk_type],
str(self.disk_size)]
stdout, _, _ = vm_util.IssueCommand(create_cmd, env=nova_env)
volume = util.ParseNovaTable(stdout)
if 'id' in volume and volume['id']:
self.id = volume['id']
else:
raise errors.Error('There was a problem when creating a volume.')
def Attach(self, vm):
"""Attaches the volume to a VM.
Args:
vm: The RackspaceVirtualMachine instance to which the volume will be
attached.
"""
self.attached_vm_name = vm.name
nova_env = os.environ.copy()
nova_env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
attach_cmd = [
FLAGS.nova_path,
'volume-attach',
self.attached_vm_name,
self.id, ""]
vm_util.IssueRetryableCommand(attach_cmd, env=nova_env)
if not self._WaitForDiskUntilAttached(vm):
raise errors.Resource.RetryableCreationError(
'Failed to attach all scratch disks to vms. Exiting...')
def GetDevicePath(self):
"""Returns the path to the device inside the VM."""
nova_env = os.environ.copy()
nova_env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
getdisk_cmd = [FLAGS.nova_path, 'volume-show', self.name]
stdout, _, _ = vm_util.IssueCommand(getdisk_cmd, env=nova_env)
volume = util.ParseNovaTable(stdout)
attachment_list = []
if 'attachments' in volume and volume['attachments']:
attachment_list = json.loads(volume['attachments'])
if not attachment_list:
raise errors.Error('Cannot determine volume %s attachments' % self.name)
for attachment in attachment_list:
if 'volume_id' in attachment and attachment['volume_id'] == self.id:
return attachment['device']
else:
raise errors.Error(
'Could not find device path in the volume %s attachments')
def _Delete(self):
"""Delete a Rackspace VM instance."""
env = os.environ.copy()
env.update(util.GetDefaultRackspaceNovaEnv(self.zone))
delete_cmd = [FLAGS.nova_path, 'delete', self.id]
vm_util.IssueCommand(delete_cmd, env=env)
def _Delete(self): """Deletes the volume.""" nova_env = os.environ.copy() nova_env.update(util.GetDefaultRackspaceNovaEnv(self.zone)) delete_cmd = [FLAGS.nova_path, 'volume-delete', self.name] vm_util.IssueCommand(delete_cmd, env=nova_env)
