openstack
/
octavia
Code Issues Proposed changes

Support create amphora instance from volume based. 

In some deploy production, using volume based instead of localdisk
to protect data and live migrate can perform.

This patch adds:
 - creation a cinder volume for amphora
 - boot amphora with cinder volume
 - config options for cinder client
 - unit tests for cinder functionality

Story: 2001594
Co-authored-by: Vadim Ponomarev <velizarx@gmail.com>
Co-authored-by: Margarita Shakhova <shakhova.margarita@gmail.com>
Change-Id: I8181ed696b9ab556e7741c08839d79167aff8350
This commit is contained in:
sapd 2018-05-25 10:45:20 +07:00 committed by Michael Johnson
parent 09efc2a423
commit 93b509cfe5
24 changed files with 682 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
devstack/plugin.sh
View File

@ -271,6 +271,7 @@ function octavia_configure {
# Setting other required default options
iniset $OCTAVIA_CONF controller_worker amphora_driver ${OCTAVIA_AMPHORA_DRIVER}
iniset $OCTAVIA_CONF controller_worker compute_driver ${OCTAVIA_COMPUTE_DRIVER}
iniset $OCTAVIA_CONF controller_worker volume_driver ${OCTAVIA_VOLUME_DRIVER}
iniset $OCTAVIA_CONF controller_worker network_driver ${OCTAVIA_NETWORK_DRIVER}
iniset $OCTAVIA_CONF controller_worker amp_image_tag ${OCTAVIA_AMP_IMAGE_TAG}

1
devstack/settings
View File

@ -20,6 +20,7 @@ OCTAVIA_RUN_DIR=${OCTAVIA_RUN_DIR:-"/var/run/octavia"}
OCTAVIA_AMPHORA_DRIVER=${OCTAVIA_AMPHORA_DRIVER:-"amphora_haproxy_rest_driver"}
OCTAVIA_NETWORK_DRIVER=${OCTAVIA_NETWORK_DRIVER:-"allowed_address_pairs_driver"}
OCTAVIA_COMPUTE_DRIVER=${OCTAVIA_COMPUTE_DRIVER:-"compute_nova_driver"}
OCTAVIA_VOLUME_DRIVER=${OCTAVIA_VOLUME_DRIVER:-"volume_noop_driver"}
OCTAVIA_USERNAME=${OCTAVIA_ADMIN_USER:-"admin"}
OCTAVIA_PASSWORD=${OCTAVIA_PASSWORD:-${ADMIN_PASSWORD}}

42
etc/octavia.conf
View File

@ -243,6 +243,10 @@
# allowed_address_pairs_driver
#
# network_driver = network_noop_driver
# Volume driver options are volume_noop_driver
# volume_cinder_driver
#
# volume_driver = volume_noop_driver
#
# Distributor driver options are distributor_noop_driver
# single_VIP_amphora
@ -421,6 +425,44 @@
# Nova supports: anti-affinity and soft-anti-affinity
# anti_affinity_policy = anti-affinity
[cinder]
# The name of the cinder service in the keystone catalog
# service_name =
# Custom cinder endpoint if override is necessary
# endpoint =
# Region in Identity service catalog to use for communication with the
# OpenStack services.
# region_name =
# Endpoint type in Identity service catalog to use for communication with
# the OpenStack services.
# endpoint_type = publicURL
# Availability zone to use for creating Volume
# availability_zone =
# CA certificates file to verify cinder connections when TLS is enabled
# insecure = False
# ca_certificates_file =
# Size of root volume in GB for Amphora Instance when use Cinder
# In some storage backends such as ScaleIO, the size of volume is multiple of 8
# volume_size = 16
# Volume type to be used for Amphora Instance root disk
# If not specified, default_volume_type from cinder.conf will be used
# volume_type =
# Interval time to wait until volume becomes available
# volume_create_retry_interval = 5
# Timeout to wait for volume creation success
# volume_create_timeout = 300
# Maximum number of retries to create volume
# volume_create_max_retries = 5
[glance]
# The name of the glance service in the keystone catalog
# service_name =

1
lower-constraints.txt
View File

@ -172,3 +172,4 @@ WebTest==2.0.29
Werkzeug==0.14.1
wrapt==1.10.11
WSME==0.8.0
python-cinderclient==3.3.0

42
octavia/common/clients.py
View File

@ -10,6 +10,7 @@
# License for the specific language governing permissions and limitations
# under the License.
from cinderclient import client as cinder_client
from glanceclient import client as glance_client
from neutronclient.neutron import client as neutron_client
from novaclient import api_versions
@ -26,6 +27,7 @@ CONF = cfg.CONF
GLANCE_VERSION = '2'
NEUTRON_VERSION = '2.0'
NOVA_VERSION = '2.15'
CINDER_VERSION = '3'
class NovaAuth(object):
@ -143,3 +145,43 @@ class GlanceAuth(object):
with excutils.save_and_reraise_exception():
LOG.exception("Error creating Glance client.")
return cls.glance_client
class CinderAuth(object):
cinder_client = None
@classmethod
def get_cinder_client(cls, region, service_name=None, endpoint=None,
endpoint_type='publicURL', insecure=False,
cacert=None):
"""Create cinder client object.
:param region: The region of the service
:param service_name: The name of the cinder service in the catalog
:param endpoint: The endpoint of the service
:param endpoint_type: The endpoint type of the service
:param insecure: Turn off certificate validation
:param cacert: CA Cert file path
:return: a Cinder Client object
:raise Exception: if the client cannot be created
"""
ksession = keystone.KeystoneSession()
if not cls.cinder_client:
kwargs = {'region_name': region,
'session': ksession.get_session(),
'interface': endpoint_type}
if service_name:
kwargs['service_name'] = service_name
if endpoint:
kwargs['endpoint'] = endpoint
if endpoint.startwith("https"):
kwargs['insecure'] = insecure
kwargs['cacert'] = cacert
try:
cls.cinder_client = cinder_client.Client(
CINDER_VERSION, **kwargs
)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception("Error creating Cinder client.")
return cls.cinder_client

37
octavia/common/config.py
View File

@ -410,6 +410,10 @@ controller_worker_opts = [
cfg.StrOpt('network_driver',
default='network_noop_driver',
help=_('Name of the network driver to use')),
cfg.StrOpt('volume_driver',
default=constants.VOLUME_NOOP_DRIVER,
choices=constants.SUPPORTED_VOLUME_DRIVERS,
help=_('Name of the volume driver to use')),
cfg.StrOpt('distributor_driver',
default='distributor_noop_driver',
help=_('Name of the distributor driver to use')),
@ -560,6 +564,38 @@ nova_opts = [
cfg.StrOpt('availability_zone', default=None,
help=_('Availability zone to use for creating Amphorae')),
]
cinder_opts = [
cfg.StrOpt('service_name',
help=_('The name of the cinder service in the keystone '
'catalog')),
cfg.StrOpt('endpoint', help=_('A new endpoint to override the endpoint '
'in the keystone catalog.')),
cfg.StrOpt('region_name',
help=_('Region in Identity service catalog to use for '
'communication with the OpenStack services.')),
cfg.StrOpt('endpoint_type', default='publicURL',
help=_('Endpoint interface in identity service to use')),
cfg.StrOpt('ca_certificates_file',
help=_('CA certificates file path')),
cfg.StrOpt('availability_zone', default=None,
help=_('Availability zone to use for creating Volume')),
cfg.BoolOpt('insecure',
default=False,
help=_('Disable certificate validation on SSL connections')),
cfg.IntOpt('volume_size', default=16,
help=_('Size of volume for Amphora instance')),
cfg.StrOpt('volume_type', default=None,
help=_('Type of volume for Amphorae volume root disk')),
cfg.IntOpt('volume_create_retry_interval', default=5,
help=_('Interval time to wait volume is created in available'
'state')),
cfg.IntOpt('volume_create_timeout', default=300,
help=_('Timeout to wait for volume creation success')),
cfg.IntOpt('volume_create_max_retries', default=5,
help=_('Maximum number of retries to create volume'))
]
neutron_opts = [
cfg.StrOpt('service_name',
help=_('The name of the neutron service in the '
@ -685,6 +721,7 @@ cfg.CONF.register_cli_opts(core_cli_opts)
cfg.CONF.register_opts(certificate_opts, group='certificates')
cfg.CONF.register_cli_opts(healthmanager_opts, group='health_manager')
cfg.CONF.register_opts(nova_opts, group='nova')
cfg.CONF.register_opts(cinder_opts, group='cinder')
cfg.CONF.register_opts(glance_opts, group='glance')
cfg.CONF.register_opts(neutron_opts, group='neutron')
cfg.CONF.register_opts(quota_opts, group='quotas')

10
octavia/common/constants.py
View File

@ -687,3 +687,13 @@ L4_PROTOCOL_MAP = {
PROTOCOL_PROXY: PROTOCOL_TCP,
PROTOCOL_UDP: PROTOCOL_UDP,
}
# Volume drivers
VOLUME_NOOP_DRIVER = 'volume_noop_driver'
SUPPORTED_VOLUME_DRIVERS = [VOLUME_NOOP_DRIVER,
'volume_cinder_driver']
# Cinder volume driver constants
CINDER_STATUS_AVAILABLE = 'available'
CINDER_STATUS_ERROR = 'error'
CINDER_ACTION_CREATE_VOLUME = 'create volume'

8
octavia/common/exceptions.py
View File

@ -383,3 +383,11 @@ class ObjectInUse(APIException):
class ProviderFlavorMismatchError(APIException):
msg = _("Flavor '%(flav)s' is not compatible with provider '%(prov)s'")
code = 400
class VolumeDeleteException(OctaviaException):
message = _('Failed to delete volume instance.')
class VolumeGetException(OctaviaException):
message = _('Failed to retrieve volume instance.')

53
octavia/compute/drivers/nova_driver.py
View File

@ -18,6 +18,7 @@ import string
from novaclient import exceptions as nova_exceptions
from oslo_config import cfg
from oslo_log import log as logging
from stevedore import driver as stevedore_driver
from octavia.common import clients
from octavia.common import constants
@ -88,6 +89,11 @@ class VirtualMachineManager(compute_base.ComputeBase):
self.manager = self._nova_client.servers
self.server_groups = self._nova_client.server_groups
self.flavor_manager = self._nova_client.flavors
self.volume_driver = stevedore_driver.DriverManager(
namespace='octavia.volume.drivers',
name=CONF.controller_worker.volume_driver,
invoke_on_load=True
).driver
def build(self, name="amphora_name", amphora_flavor=None,
image_id=None, image_tag=None, image_owner=None,
@ -122,6 +128,7 @@ class VirtualMachineManager(compute_base.ComputeBase):
'''
volume_id = None
try:
network_ids = network_ids or []
port_ids = port_ids or []
@ -143,9 +150,25 @@ class VirtualMachineManager(compute_base.ComputeBase):
[r.choice(string.ascii_uppercase + string.digits)
for i in range(CONF.nova.random_amphora_name_length - 1)]
))
block_device_mapping = {}
if CONF.controller_worker.volume_driver != \
constants.VOLUME_NOOP_DRIVER:
# creating volume
LOG.debug('Creating volume for amphora from image %s',
image_id)
volume_id = self.volume_driver.create_volume_from_image(
image_id)
LOG.debug('Created boot volume %s for amphora', volume_id)
# If use volume based, does not require image ID anymore
image_id = None
# Boot from volume with parameters: target device name = vda,
# device id = volume_id, device type and size unspecified,
# delete-on-terminate = true (volume will be deleted by Nova
# on instance termination)
block_device_mapping = {'vda': '%s:::true' % volume_id}
amphora = self.manager.create(
name=name, image=image_id, flavor=amphora_flavor,
block_device_mapping=block_device_mapping,
key_name=key_name, security_groups=sec_groups,
nics=nics,
files=config_drive_files,
@ -157,6 +180,9 @@ class VirtualMachineManager(compute_base.ComputeBase):
return amphora.id
except Exception as e:
if CONF.controller_worker.volume_driver != \
constants.VOLUME_NOOP_DRIVER:
self.volume_driver.delete_volume(volume_id)
LOG.exception("Nova failed to build the instance due to: %s", e)
raise exceptions.ComputeBuildException(fault=e)
@ -216,6 +242,7 @@ class VirtualMachineManager(compute_base.ComputeBase):
lb_network_ip = None
availability_zone = None
image_id = None
fault = None
try:
@ -242,12 +269,34 @@ class VirtualMachineManager(compute_base.ComputeBase):
'os-interfaces extension failed.')
fault = getattr(nova_response, 'fault', None)
if CONF.controller_worker.volume_driver == \
constants.VOLUME_NOOP_DRIVER:
image_id = nova_response.image.get("id")
else:
try:
volumes = self._nova_client.volumes.get_server_volumes(
nova_response.id)
except Exception:
LOG.debug('Extracting volumes through nova '
'os-volumes extension failed.')
volumes = []
if not volumes:
LOG.warning('Boot volume not found for volume backed '
'amphora instance %s ', nova_response.id)
else:
if len(volumes) > 1:
LOG.warning('Found more than one (%s) volumes '
'for amphora instance %s',
len(volumes), nova_response.id)
volume_id = volumes[0].volumeId
image_id = self.volume_driver.get_image_from_volume(volume_id)
response = models.Amphora(
compute_id=nova_response.id,
status=nova_response.status,
lb_network_ip=lb_network_ip,
cached_zone=availability_zone,
image_id=nova_response.image.get("id"),
image_id=image_id,
compute_flavor=nova_response.flavor.get("id")
)
return response, fault

39
octavia/tests/unit/common/test_clients.py
View File

@ -10,6 +10,7 @@
# License for the specific language governing permissions and limitations
# under the License.
import cinderclient.v3
import glanceclient.v2
import mock
import neutronclient.v2_0
@ -135,3 +136,41 @@ class TestGlanceAuth(base.TestCase):
region="test-region", service_name="glanceEndpoint1",
endpoint="test-endpoint", endpoint_type='publicURL', insecure=True)
self.assertIs(bc1, bc2)
class TestCinderAuth(base.TestCase):
def setUp(self):
# Reset the session and client
clients.CinderAuth.cinder_client = None
keystone._SESSION = None
super(TestCinderAuth, self).setUp()
@mock.patch('keystoneauth1.session.Session', mock.Mock())
def test_get_cinder_client(self):
# There should be no existing client
self.assertIsNone(
clients.CinderAuth.cinder_client
)
# Mock out the keystone session and get the client
keystone._SESSION = mock.MagicMock()
bc1 = clients.CinderAuth.get_cinder_client(
region=None, endpoint_type='publicURL', insecure=True)
# Our returned client should also be the saved client
self.assertIsInstance(
clients.CinderAuth.cinder_client,
cinderclient.v3.client.Client
)
self.assertIs(
clients.CinderAuth.cinder_client,
bc1
)
# Getting the session again should return the same object
bc2 = clients.CinderAuth.get_cinder_client(
region="test-region", service_name="cinderEndpoint1",
endpoint="test-endpoint", endpoint_type='publicURL', insecure=True)
self.assertIs(bc1, bc2)

62
octavia/tests/unit/compute/drivers/test_nova_driver.py
View File

@ -96,12 +96,13 @@ class TestNovaClient(base.TestCase):
conf.config(group="controller_worker",
amp_boot_network_list=['1', '2'])
self.conf = conf
self.fake_image_uuid = uuidutils.generate_uuid()
self.amphora = models.Amphora(
compute_id=uuidutils.generate_uuid(),
status='ACTIVE',
lb_network_ip='10.0.0.1',
image_id=uuidutils.generate_uuid(),
image_id=self.fake_image_uuid,
compute_flavor=uuidutils.generate_uuid()
)
@ -148,6 +149,9 @@ class TestNovaClient(base.TestCase):
self.server_group_mock.policy = self.server_group_policy
self.server_group_mock.id = self.server_group_id
self.volume_mock = mock.MagicMock()
setattr(self.volume_mock, 'volumeId', '1')
self.port_id = uuidutils.generate_uuid()
self.compute_id = uuidutils.generate_uuid()
self.network_id = uuidutils.generate_uuid()
@ -177,7 +181,39 @@ class TestNovaClient(base.TestCase):
userdata='Blah',
config_drive=True,
scheduler_hints=None,
availability_zone=None
availability_zone=None,
block_device_mapping={}
)
@mock.patch('stevedore.driver.DriverManager.driver')
def test_build_with_cinder_volume(self, mock_driver):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
self.manager.volume_driver = mock_driver
mock_driver.create_volume_from_image.return_value = 1
amphora_id = self.manager.build(amphora_flavor=1, image_id=1,
key_name=1,
sec_groups=1,
network_ids=[1],
port_ids=[2],
user_data='Blah',
config_drive_files='Files Blah')
self.assertEqual(self.amphora.compute_id, amphora_id)
mock_driver.create_volume_from_image.assert_called_with(1)
self.manager.manager.create.assert_called_with(
name="amphora_name",
nics=[{'net-id': 1}, {'port-id': 2}],
image=None,
flavor=1,
key_name=1,
security_groups=1,
files='Files Blah',
userdata='Blah',
config_drive=True,
scheduler_hints=None,
availability_zone=None,
block_device_mapping={'vda': '1:::true'}
)
def test_build_with_availability_zone(self):
@ -205,7 +241,8 @@ class TestNovaClient(base.TestCase):
userdata='Blah',
config_drive=True,
scheduler_hints=None,
availability_zone=FAKE_AZ
availability_zone=FAKE_AZ,
block_device_mapping={}
)
def test_build_with_random_amphora_name_length(self):
@ -241,7 +278,8 @@ class TestNovaClient(base.TestCase):
userdata='Blah',
config_drive=True,
scheduler_hints=None,
availability_zone=None
availability_zone=None,
block_device_mapping={}
)
def test_bad_build(self):
@ -312,6 +350,22 @@ class TestNovaClient(base.TestCase):
self.assertIsNone(amphora.lb_network_ip)
self.nova_response.interface_list.called_with()
@mock.patch('stevedore.driver.DriverManager.driver')
def test_translate_amphora_use_cinder(self, mock_driver):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
volumes_manager = self.manager._nova_client.volumes
volumes_manager.get_server_volumes.return_value = [self.volume_mock]
self.manager.volume_driver = mock_driver
mock_driver.get_image_from_volume.return_value = self.fake_image_uuid
amphora, fault = self.manager._translate_amphora(self.nova_response)
self.assertEqual(self.amphora, amphora)
self.assertEqual(self.nova_response.fault, fault)
self.nova_response.interface_list.called_with()
volumes_manager.get_server_volumes.assert_called_with(
self.nova_response.id)
mock_driver.get_image_from_volume.assert_called_with('1')
def test_create_server_group(self):
self.manager.server_groups.create.return_value = self.server_group_mock

0
octavia/tests/unit/volume/__init__.py Normal file
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0
octavia/tests/unit/volume/drivers/__init__.py Normal file
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99
octavia/tests/unit/volume/drivers/test_cinder_driver.py Normal file
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@ -0,0 +1,99 @@
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from cinderclient import exceptions as cinder_exceptions
import mock
from oslo_config import cfg
from oslo_config import fixture as oslo_fixture
from oslo_utils import uuidutils
from octavia.common import exceptions
import octavia.tests.unit.base as base
import octavia.volume.drivers.cinder_driver as cinder_common
CONF = cfg.CONF
class TestCinderClient(base.TestCase):
def setUp(self):
fake_uuid1 = uuidutils.generate_uuid()
fake_uuid2 = uuidutils.generate_uuid()
fake_uuid3 = uuidutils.generate_uuid()
conf = self.useFixture(oslo_fixture.Config(cfg.CONF))
self.conf = conf
self.manager = cinder_common.VolumeManager()
self.manager.manager = mock.MagicMock()
self.cinder_response = mock.Mock()
self.cinder_response.id = fake_uuid1
self.manager.manager.get.return_value.status = 'available'
self.manager.manager.create.return_value = self.cinder_response
self.image_id = fake_uuid2
self.volume_id = fake_uuid3
super(TestCinderClient, self).setUp()
def test_create_volume_from_image(self):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
self.conf.config(group="cinder", volume_create_retry_interval=0)
self.manager.create_volume_from_image(self.image_id)
self.manager.manager.create.assert_called_with(
size=16,
volume_type=None,
availability_zone=None,
imageRef=self.image_id)
def test_create_volume_from_image_error(self):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
self.conf.config(group="cinder", volume_create_retry_interval=0)
self.manager.manager.get.return_value.status = 'error'
self.assertRaises(cinder_exceptions.ResourceInErrorState,
self.manager.create_volume_from_image,
self.image_id)
def test_build_cinder_volume_timeout(self):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
self.conf.config(group="cinder", volume_create_timeout=0)
self.conf.config(group="cinder", volume_create_retry_interval=0)
self.manager.manager.get.return_value.status = 'build'
self.manager.create_volume_from_image.retry.sleep = mock.Mock()
self.assertRaises(cinder_exceptions.TimeoutException,
self.manager.create_volume_from_image,
self.image_id)
def test_get_image_from_volume(self):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
self.conf.config(group="cinder",
volume_create_retry_interval=0)
self.manager.get_image_from_volume(self.volume_id)
self.manager.manager.get.assert_called_with(
self.volume_id)
def test_get_image_from_volume_error(self):
self.conf.config(group="controller_worker",
volume_driver='volume_cinder_driver')
self.conf.config(group="cinder",
volume_create_retry_interval=0)
self.manager.manager.get.side_effect = [
exceptions.VolumeGetException('test_exception')]
self.assertRaises(exceptions.VolumeGetException,
self.manager.get_image_from_volume,
self.volume_id)

46
octavia/tests/unit/volume/drivers/test_volume_noop_driver.py Normal file
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@ -0,0 +1,46 @@
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_config import cfg
from oslo_utils import uuidutils
import octavia.tests.unit.base as base
from octavia.volume.drivers.noop_driver import driver
CONF = cfg.CONF
class TestNoopVolumeDriver(base.TestCase):
FAKE_UUID_1 = uuidutils.generate_uuid()
FAKE_UUID_2 = uuidutils.generate_uuid()
def setUp(self):
super(TestNoopVolumeDriver, self).setUp()
self.driver = driver.NoopVolumeDriver()
self.image_id = self.FAKE_UUID_1
self.volume_id = self.FAKE_UUID_2
def test_create_volume_from_image(self):
self.driver.create_volume_from_image(self.image_id)
self.assertEqual((self.image_id, 'create_volume_from_image'),
self.driver.driver.volumeconfig[(
self.image_id
)])
def test_get_image_from_volume(self):
self.driver.get_image_from_volume(self.volume_id)
self.assertEqual((self.volume_id, 'get_image_from_volume'),
self.driver.driver.volumeconfig[(
self.volume_id
)])

0
octavia/volume/__init__.py Normal file
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0
octavia/volume/drivers/__init__.py Normal file
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123
octavia/volume/drivers/cinder_driver.py Normal file
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@ -0,0 +1,123 @@
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import time
from cinderclient import exceptions as cinder_exceptions
from oslo_config import cfg
from oslo_log import log as logging
from tenacity import retry
from tenacity import stop_after_attempt
from octavia.common import clients
from octavia.common import constants
from octavia.common import exceptions
from octavia.volume import volume_base
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
class VolumeManager(volume_base.VolumeBase):
'''Volume implementation of virtual machines via cinder.'''
def __init__(self):
super(VolumeManager, self).__init__()
# Must initialize cinder api
self._cinder_client = clients.CinderAuth.get_cinder_client(
service_name=CONF.cinder.service_name,
endpoint=CONF.cinder.endpoint,
region=CONF.cinder.region_name,
endpoint_type=CONF.cinder.endpoint_type,
insecure=CONF.cinder.insecure,
cacert=CONF.cinder.ca_certificates_file
)
self.manager = self._cinder_client.volumes
@retry(reraise=True,
stop=stop_after_attempt(CONF.cinder.volume_create_max_retries))
def create_volume_from_image(self, image_id):
"""Create cinder volume
:param image_id: ID of amphora image
:return volume id
"""
volume = self.manager.create(
size=CONF.cinder.volume_size,
volume_type=CONF.cinder.volume_type,
availability_zone=CONF.cinder.availability_zone,
imageRef=image_id)
resource_status = self.manager.get(volume.id).status
status = constants.CINDER_STATUS_AVAILABLE
start = int(time.time())
while resource_status != status:
time.sleep(CONF.cinder.volume_create_retry_interval)
instance_volume = self.manager.get(volume.id)
resource_status = instance_volume.status
if resource_status == constants.CINDER_STATUS_ERROR:
LOG.error('Error creating %s', instance_volume.id)
instance_volume.delete()
raise cinder_exceptions.ResourceInErrorState(
obj=volume, fault_msg='Cannot create volume')
if int(time.time()) - start >= CONF.cinder.volume_create_timeout:
LOG.error('Timed out waiting to create cinder volume %s',
instance_volume.id)
instance_volume.delete()
raise cinder_exceptions.TimeoutException(
obj=volume, action=constants.CINDER_ACTION_CREATE_VOLUME)
return volume.id
def delete_volume(self, volume_id):
"""Get glance image from volume
:param volume_id: ID of amphora boot volume
:return image id
"""
LOG.debug('Deleting cinder volume %s', volume_id)
try:
instance_volume = self.manager.get(volume_id)
try:
instance_volume.delete()
LOG.debug("Deleted volume %s", volume_id)
except Exception:
LOG.exception("Error deleting cinder volume %s",
volume_id)
raise exceptions.VolumeDeleteException()
except cinder_exceptions.NotFound:
LOG.warning("Volume %s not found: assuming already deleted",
volume_id)
def get_image_from_volume(self, volume_id):
"""Get glance image from volume
:param volume_id: ID of amphora boot volume
:return image id
"""
image_id = None
LOG.debug('Get glance image for volume %s', volume_id)
try:
instance_volume = self.manager.get(volume_id)
except cinder_exceptions.NotFound:
LOG.exception("Volume %s not found", volume_id)
raise exceptions.VolumeGetException()
if hasattr(instance_volume, 'volume_image_metadata'):
image_id = instance_volume.volume_image_metadata.get("image_id")
else:
LOG.error("Volume %s has no image metadata", volume_id)
image_id = None
return image_id

0
octavia/volume/drivers/noop_driver/__init__.py Normal file
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60
octavia/volume/drivers/noop_driver/driver.py Normal file
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@ -0,0 +1,60 @@
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_log import log as logging
from oslo_utils import uuidutils
from octavia.volume import volume_base as driver_base
LOG = logging.getLogger(__name__)
class NoopManager(object):
def __init__(self):
super(NoopManager, self).__init__()
self.volumeconfig = {}
def create_volume_from_image(self, image_id):
LOG.debug("Volume %s no-op, image id %s",
self.__class__.__name__, image_id)
self.volumeconfig[image_id] = (image_id, 'create_volume_from_image')
volume_id = uuidutils.generate_uuid()
return volume_id
def delete_volume(self, volume_id):
LOG.debug("Volume %s no-op, volume id %s",
self.__class__.__name__, volume_id)
self.volumeconfig[volume_id] = (volume_id, 'delete')
def get_image_from_volume(self, volume_id):
LOG.debug("Volume %s no-op, volume id %s",
self.__class__.__name__, volume_id)
self.volumeconfig[volume_id] = (volume_id, 'get_image_from_volume')
image_id = uuidutils.generate_uuid()
return image_id
class NoopVolumeDriver(driver_base.VolumeBase):
def __init__(self):
super(NoopVolumeDriver, self).__init__()
self.driver = NoopManager()
def create_volume_from_image(self, image_id):
volume_id = self.driver.create_volume_from_image(image_id)
return volume_id
def delete_volume(self, volume_id):
self.driver.delete_volume(volume_id)
def get_image_from_volume(self, volume_id):
image_id = self.driver.get_image_from_volume(volume_id)
return image_id

46
octavia/volume/volume_base.py Normal file
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@ -0,0 +1,46 @@
# Copyright 2011-2019 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import abc
import six
@six.add_metaclass(abc.ABCMeta)
class VolumeBase(object):
@abc.abstractmethod
def create_volume_from_image(self, image_id):
"""Create volume for instance
:param image_id: ID of amphora image
:return volume id
"""
@abc.abstractmethod
def delete_volume(self, volume_id):
"""Delete volume
:param volume_id: ID of amphora volume
"""
@abc.abstractmethod
def get_image_from_volume(self, volume_id):
"""Get cinder volume
:param volume_id: ID of amphora volume
:return image id
"""

14
releasenotes/notes/volume-based-amphora-9a1899634f5244b0.yaml Normal file
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@ -0,0 +1,14 @@
---
features:
- |
Allow creation of volume based amphora.
Many deploy production use volume based instances because of more flexibility.
Octavia will create volume and attach this to the amphora.
Have new settings:
* `volume_driver`: Whether to use volume driver (cinder) to create volume backed amphorae.
* `volume_size`: Size of root volume for Amphora Instance when using Cinder
* `volume_type` : Type of volume for Amphorae volume root disk
* `volume_create_retry_interval`: Interval time to wait volume is created in available state
* `volume_create_timeout`: Timeout When volume is not create success
* `volume_create_max_retries`: Maximum number of retries to create volume

1
requirements.txt
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@ -34,6 +34,7 @@ PyMySQL>=0.7.6 # MIT License
python-barbicanclient>=4.5.2 # Apache-2.0
python-glanceclient>=2.8.0 # Apache-2.0
python-novaclient>=9.1.0 # Apache-2.0
python-cinderclient>=3.3.0 # Apache-2.0
pyOpenSSL>=17.1.0 # Apache-2.0
WSME>=0.8.0 # MIT
Jinja2>=2.10 # BSD License (3 clause)

3
setup.cfg
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@ -79,6 +79,9 @@ octavia.network.drivers =
network_noop_driver = octavia.network.drivers.noop_driver.driver:NoopNetworkDriver
allowed_address_pairs_driver = octavia.network.drivers.neutron.allowed_address_pairs:AllowedAddressPairsDriver
containers_driver = octavia.network.drivers.neutron.containers:ContainersDriver
octavia.volume.drivers =
volume_noop_driver = octavia.volume.drivers.noop_driver.driver:NoopVolumeDriver
volume_cinder_driver = octavia.volume.drivers.cinder_driver:VolumeManager
octavia.distributor.drivers =
distributor_noop_driver = octavia.distributor.drivers.noop_driver.driver:NoopDistributorDriver
single_VIP_amphora = octavia.distributor.drivers.single_VIP_amphora.driver:SingleVIPAmpDistributorDriver