from mock import MagicMock, patch, call import yaml from test_utils import CharmTestCase with patch('charmhelpers.core.hookenv.config') as config: config.return_value = 'neutron' import neutron_api_utils as utils _reg = utils.register_configs _map = utils.restart_map utils.register_configs = MagicMock() utils.restart_map = MagicMock() import neutron_api_hooks as hooks hooks.hooks._config_save = False hooks.hooks._config_save = False utils.register_configs = _reg utils.restart_map = _map TO_PATCH = [ 'api_port', 'apt_update', 'apt_install', 'config', 'CONFIGS', 'check_call', 'configure_installation_source', 'determine_packages', 'determine_ports', 'do_openstack_upgrade', 'dvr_router_present', 'local_unit', 'l3ha_router_present', 'execd_preinstall', 'filter_installed_packages', 'get_dvr', 'get_l3ha', 'get_l2population', 'get_overlay_network_type', 'git_install', 'is_elected_leader', 'is_relation_made', 'log', 'migrate_neutron_database', 'neutron_ready', 'open_port', 'openstack_upgrade_available', 'os_release', 'os_requires_version', 'relation_get', 'relation_ids', 'relation_set', 'service_restart', 'unit_get', 'get_iface_for_address', 'get_netmask_for_address', 'get_address_in_network', 'update_nrpe_config', 'service_reload', 'IdentityServiceContext', ] NEUTRON_CONF_DIR = "/etc/neutron" NEUTRON_CONF = '%s/neutron.conf' % NEUTRON_CONF_DIR from random import randrange class DummyContext(): def __init__(self, return_value): self.return_value = return_value def __call__(self): return self.return_value class NeutronAPIHooksTests(CharmTestCase): def setUp(self): super(NeutronAPIHooksTests, self).setUp(hooks, TO_PATCH) self.config.side_effect = self.test_config.get self.relation_get.side_effect = self.test_relation.get self.test_config.set('openstack-origin', 'distro') self.test_config.set('neutron-plugin', 'ovs') def _fake_relids(self, rel_name): return [randrange(100) for _count in range(2)] def _call_hook(self, hookname): hooks.hooks.execute([ 'hooks/{}'.format(hookname)]) @patch.object(utils, 'git_install_requested') def test_install_hook(self, git_requested): git_requested.return_value = False _pkgs = ['foo', 'bar'] _ports = [80, 81, 82] _port_calls = [call(port) for port in _ports] self.determine_packages.return_value = _pkgs self.determine_ports.return_value = _ports self._call_hook('install') self.configure_installation_source.assert_called_with( 'distro' ) self.apt_update.assert_called_with() self.apt_install.assert_has_calls([ call(_pkgs, fatal=True), ]) self.open_port.assert_has_calls(_port_calls) self.assertTrue(self.execd_preinstall.called) @patch.object(utils, 'git_install_requested') def test_install_hook_git(self, git_requested): git_requested.return_value = True _pkgs = ['foo', 'bar'] _ports = [80, 81, 82] _port_calls = [call(port) for port in _ports] self.determine_packages.return_value = _pkgs self.determine_ports.return_value = _ports repo = 'cloud:trusty-juno' openstack_origin_git = { 'repositories': [ {'name': 'requirements', 'repository': 'git://git.openstack.org/openstack/requirements', # noqa 'branch': 'stable/juno'}, {'name': 'neutron', 'repository': 'git://git.openstack.org/openstack/neutron', 'branch': 'stable/juno'} ], 'directory': '/mnt/openstack-git', } projects_yaml = yaml.dump(openstack_origin_git) self.test_config.set('openstack-origin', repo) self.test_config.set('openstack-origin-git', projects_yaml) self._call_hook('install') self.assertTrue(self.execd_preinstall.called) self.configure_installation_source.assert_called_with(repo) self.apt_update.assert_called_with() self.apt_install.assert_has_calls([ call(_pkgs, fatal=True), ]) self.git_install.assert_called_with(projects_yaml) self.open_port.assert_has_calls(_port_calls) @patch.object(hooks, 'configure_https') @patch.object(hooks, 'git_install_requested') def test_config_changed(self, git_requested, conf_https): git_requested.return_value = False self.neutron_ready.return_value = True self.openstack_upgrade_available.return_value = True self.dvr_router_present.return_value = False self.l3ha_router_present.return_value = False self.relation_ids.side_effect = self._fake_relids _n_api_rel_joined = self.patch('neutron_api_relation_joined') _n_plugin_api_rel_joined =\ self.patch('neutron_plugin_api_relation_joined') _amqp_rel_joined = self.patch('amqp_joined') _id_rel_joined = self.patch('identity_joined') _id_cluster_joined = self.patch('cluster_joined') _zmq_joined = self.patch('zeromq_configuration_relation_joined') self._call_hook('config-changed') self.assertTrue(_n_api_rel_joined.called) self.assertTrue(_n_plugin_api_rel_joined.called) self.assertTrue(_amqp_rel_joined.called) self.assertTrue(_id_rel_joined.called) self.assertTrue(_id_cluster_joined.called) self.assertTrue(_zmq_joined.called) self.assertTrue(self.CONFIGS.write_all.called) self.assertTrue(self.do_openstack_upgrade.called) self.assertTrue(self.apt_install.called) def test_config_changed_nodvr_disprouters(self): self.neutron_ready.return_value = True self.dvr_router_present.return_value = True self.get_dvr.return_value = False with self.assertRaises(Exception) as context: self._call_hook('config-changed') self.assertEqual(context.exception.message, 'Cannot disable dvr while dvr enabled routers exist.' ' Please remove any distributed routers') def test_config_changed_nol3ha_harouters(self): self.neutron_ready.return_value = True self.dvr_router_present.return_value = False self.l3ha_router_present.return_value = True self.get_l3ha.return_value = False with self.assertRaises(Exception) as context: self._call_hook('config-changed') self.assertEqual(context.exception.message, 'Cannot disable Router HA while ha enabled routers' ' exist. Please remove any ha routers') @patch.object(hooks, 'configure_https') @patch.object(hooks, 'git_install_requested') @patch.object(hooks, 'config_value_changed') def test_config_changed_git(self, config_val_changed, git_requested, configure_https): git_requested.return_value = True self.neutron_ready.return_value = True self.dvr_router_present.return_value = False self.l3ha_router_present.return_value = False self.relation_ids.side_effect = self._fake_relids _n_api_rel_joined = self.patch('neutron_api_relation_joined') _n_plugin_api_rel_joined =\ self.patch('neutron_plugin_api_relation_joined') _amqp_rel_joined = self.patch('amqp_joined') _id_rel_joined = self.patch('identity_joined') _id_cluster_joined = self.patch('cluster_joined') _zmq_joined = self.patch('zeromq_configuration_relation_joined') repo = 'cloud:trusty-juno' openstack_origin_git = { 'repositories': [ {'name': 'requirements', 'repository': 'git://git.openstack.org/openstack/requirements', 'branch': 'stable/juno'}, {'name': 'neutron', 'repository': 'git://git.openstack.org/openstack/neutron', 'branch': 'stable/juno'} ], 'directory': '/mnt/openstack-git', } projects_yaml = yaml.dump(openstack_origin_git) self.test_config.set('openstack-origin', repo) self.test_config.set('openstack-origin-git', projects_yaml) self._call_hook('config-changed') self.git_install.assert_called_with(projects_yaml) self.assertFalse(self.do_openstack_upgrade.called) self.assertTrue(self.apt_install.called) self.assertTrue(configure_https.called) self.assertTrue(self.update_nrpe_config.called) self.assertTrue(self.CONFIGS.write_all.called) self.assertTrue(_n_api_rel_joined.called) self.assertTrue(_n_plugin_api_rel_joined.called) self.assertTrue(_amqp_rel_joined.called) self.assertTrue(_id_rel_joined.called) self.assertTrue(_zmq_joined.called) self.assertTrue(_id_cluster_joined.called) def test_amqp_joined(self): self._call_hook('amqp-relation-joined') self.relation_set.assert_called_with( username='neutron', vhost='openstack', relation_id=None ) def test_amqp_changed(self): self.CONFIGS.complete_contexts.return_value = ['amqp'] self._call_hook('amqp-relation-changed') self.assertTrue(self.CONFIGS.write.called_with(NEUTRON_CONF)) def test_amqp_departed(self): self._call_hook('amqp-relation-departed') self.assertTrue(self.CONFIGS.write.called_with(NEUTRON_CONF)) def test_db_joined(self): self.is_relation_made.return_value = False self.unit_get.return_value = 'myhostname' self._call_hook('shared-db-relation-joined') self.relation_set.assert_called_with( username='neutron', database='neutron', hostname='myhostname', ) def test_db_joined_with_postgresql(self): self.is_relation_made.return_value = True with self.assertRaises(Exception) as context: hooks.db_joined() self.assertEqual(context.exception.message, 'Attempting to associate a mysql database when there ' 'is already associated a postgresql one') def test_postgresql_db_joined(self): self.unit_get.return_value = 'myhostname' self.is_relation_made.return_value = False self._call_hook('pgsql-db-relation-joined') self.relation_set.assert_called_with( database='neutron', ) def test_postgresql_joined_with_db(self): self.is_relation_made.return_value = True with self.assertRaises(Exception) as context: hooks.pgsql_neutron_db_joined() self.assertEqual(context.exception.message, 'Attempting to associate a postgresql database when' ' there is already associated a mysql one') @patch.object(hooks, 'conditional_neutron_migration') def test_shared_db_changed(self, cond_neutron_mig): self.CONFIGS.complete_contexts.return_value = ['shared-db'] self._call_hook('shared-db-relation-changed') self.assertTrue(self.CONFIGS.write_all.called) cond_neutron_mig.assert_called_with() def test_shared_db_changed_partial_ctxt(self): self.CONFIGS.complete_contexts.return_value = [] self._call_hook('shared-db-relation-changed') self.assertFalse(self.CONFIGS.write_all.called) @patch.object(hooks, 'conditional_neutron_migration') def test_pgsql_db_changed(self, cond_neutron_mig): self._call_hook('pgsql-db-relation-changed') self.assertTrue(self.CONFIGS.write.called) cond_neutron_mig.assert_called_with() def test_amqp_broken(self): self._call_hook('amqp-relation-broken') self.assertTrue(self.CONFIGS.write_all.called) @patch.object(hooks, 'canonical_url') def test_identity_joined(self, _canonical_url): _canonical_url.return_value = 'http://127.0.0.1' self.api_port.return_value = '9696' self.test_config.set('region', 'region1') _neutron_url = 'http://127.0.0.1:9696' _endpoints = { 'quantum_service': 'quantum', 'quantum_region': 'region1', 'quantum_public_url': _neutron_url, 'quantum_admin_url': _neutron_url, 'quantum_internal_url': _neutron_url, } self._call_hook('identity-service-relation-joined') self.relation_set.assert_called_with( relation_id=None, relation_settings=_endpoints ) @patch('charmhelpers.contrib.openstack.ip.service_name', lambda *args: 'neutron-api') @patch('charmhelpers.contrib.openstack.ip.unit_get') @patch('charmhelpers.contrib.openstack.ip.is_clustered') @patch('charmhelpers.contrib.openstack.ip.config') def test_identity_changed_public_name(self, _config, _is_clustered, _unit_get): _unit_get.return_value = '127.0.0.1' _is_clustered.return_value = False _config.side_effect = self.test_config.get self.api_port.return_value = '9696' self.test_config.set('region', 'region1') self.test_config.set('os-public-hostname', 'neutron-api.example.com') self._call_hook('identity-service-relation-joined') _neutron_url = 'http://127.0.0.1:9696' _endpoints = { 'quantum_service': 'quantum', 'quantum_region': 'region1', 'quantum_public_url': 'http://neutron-api.example.com:9696', 'quantum_admin_url': _neutron_url, 'quantum_internal_url': _neutron_url, } self.relation_set.assert_called_with( relation_id=None, relation_settings=_endpoints ) def test_identity_changed_partial_ctxt(self): self.CONFIGS.complete_contexts.return_value = [] _api_rel_joined = self.patch('neutron_api_relation_joined') self.relation_ids.side_effect = self._fake_relids self._call_hook('identity-service-relation-changed') self.assertFalse(_api_rel_joined.called) @patch.object(hooks, 'configure_https') def test_identity_changed(self, conf_https): self.CONFIGS.complete_contexts.return_value = ['identity-service'] _api_rel_joined = self.patch('neutron_api_relation_joined') self.relation_ids.side_effect = self._fake_relids self._call_hook('identity-service-relation-changed') self.assertTrue(self.CONFIGS.write.called_with(NEUTRON_CONF)) self.assertTrue(_api_rel_joined.called) @patch.object(hooks, 'canonical_url') def test_neutron_api_relation_no_id_joined(self, _canonical_url): host = 'http://127.0.0.1' port = 1234 _id_rel_joined = self.patch('identity_joined') self.relation_ids.side_effect = self._fake_relids _canonical_url.return_value = host self.api_port.return_value = port self.is_relation_made = False neutron_url = '%s:%s' % (host, port) _relation_data = { 'neutron-plugin': 'ovs', 'neutron-url': neutron_url, 'neutron-security-groups': 'no', } self._call_hook('neutron-api-relation-joined') self.relation_set.assert_called_with( relation_id=None, **_relation_data ) self.assertTrue(_id_rel_joined.called) self.test_config.set('neutron-security-groups', True) self._call_hook('neutron-api-relation-joined') _relation_data['neutron-security-groups'] = 'yes' self.relation_set.assert_called_with( relation_id=None, **_relation_data ) @patch.object(hooks, 'canonical_url') def test_neutron_api_relation_joined(self, _canonical_url): host = 'http://127.0.0.1' port = 1234 _canonical_url.return_value = host self.api_port.return_value = port self.is_relation_made = True neutron_url = '%s:%s' % (host, port) _relation_data = { 'neutron-plugin': 'ovs', 'neutron-url': neutron_url, 'neutron-security-groups': 'no', } self._call_hook('neutron-api-relation-joined') self.relation_set.assert_called_with( relation_id=None, **_relation_data ) def test_neutron_api_relation_changed(self): self.CONFIGS.complete_contexts.return_value = ['shared-db'] self._call_hook('neutron-api-relation-changed') self.assertTrue(self.CONFIGS.write.called_with(NEUTRON_CONF)) def test_neutron_api_relation_changed_incomplere_ctxt(self): self.CONFIGS.complete_contexts.return_value = [] self._call_hook('neutron-api-relation-changed') self.assertTrue(self.CONFIGS.write.called_with(NEUTRON_CONF)) def test_neutron_plugin_api_relation_joined_nol2(self): self.IdentityServiceContext.return_value = \ DummyContext(return_value={}) _relation_data = { 'neutron-security-groups': False, 'enable-dvr': False, 'enable-l3ha': False, 'l2-population': False, 'overlay-network-type': 'vxlan', 'service_protocol': None, 'auth_protocol': None, 'service_tenant': None, 'service_port': None, 'region': 'RegionOne', 'service_password': None, 'auth_port': None, 'auth_host': None, 'service_username': None, 'service_host': None } self.get_dvr.return_value = False self.get_l3ha.return_value = False self.get_l2population.return_value = False self.get_overlay_network_type.return_value = 'vxlan' self._call_hook('neutron-plugin-api-relation-joined') self.relation_set.assert_called_with( relation_id=None, **_relation_data ) def test_neutron_plugin_api_relation_joined_dvr(self): self.IdentityServiceContext.return_value = \ DummyContext(return_value={}) _relation_data = { 'neutron-security-groups': False, 'enable-dvr': True, 'enable-l3ha': False, 'l2-population': True, 'overlay-network-type': 'vxlan', 'service_protocol': None, 'auth_protocol': None, 'service_tenant': None, 'service_port': None, 'region': 'RegionOne', 'service_password': None, 'auth_port': None, 'auth_host': None, 'service_username': None, 'service_host': None } self.get_dvr.return_value = True self.get_l3ha.return_value = False self.get_l2population.return_value = True self.get_overlay_network_type.return_value = 'vxlan' self._call_hook('neutron-plugin-api-relation-joined') self.relation_set.assert_called_with( relation_id=None, **_relation_data ) def test_neutron_plugin_api_relation_joined_l3ha(self): self.IdentityServiceContext.return_value = \ DummyContext(return_value={}) _relation_data = { 'neutron-security-groups': False, 'enable-dvr': False, 'enable-l3ha': True, 'l2-population': False, 'overlay-network-type': 'vxlan', 'service_protocol': None, 'auth_protocol': None, 'service_tenant': None, 'service_port': None, 'region': 'RegionOne', 'service_password': None, 'auth_port': None, 'auth_host': None, 'service_username': None, 'service_host': None } self.get_dvr.return_value = False self.get_l3ha.return_value = True self.get_l2population.return_value = False self.get_overlay_network_type.return_value = 'vxlan' self._call_hook('neutron-plugin-api-relation-joined') self.relation_set.assert_called_with( relation_id=None, **_relation_data ) def test_neutron_plugin_api_relation_joined_w_mtu(self): self.IdentityServiceContext.return_value = \ DummyContext(return_value={}) self.test_config.set('network-device-mtu', 1500) _relation_data = { 'neutron-security-groups': False, 'l2-population': False, 'overlay-network-type': 'vxlan', 'network-device-mtu': 1500, 'enable-l3ha': True, 'enable-dvr': True, 'service_protocol': None, 'auth_protocol': None, 'service_tenant': None, 'service_port': None, 'region': 'RegionOne', 'service_password': None, 'auth_port': None, 'auth_host': None, 'service_username': None, 'service_host': None } self.get_dvr.return_value = True self.get_l3ha.return_value = True self.get_l2population.return_value = False self.get_overlay_network_type.return_value = 'vxlan' self._call_hook('neutron-plugin-api-relation-joined') self.relation_set.assert_called_with( relation_id=None, **_relation_data ) def test_cluster_changed(self): self._call_hook('cluster-relation-changed') self.assertTrue(self.CONFIGS.write_all.called) @patch.object(hooks, 'get_hacluster_config') def test_ha_joined(self, _get_ha_config): _ha_config = { 'vip': '10.0.0.1', 'vip_cidr': '24', 'vip_iface': 'eth0', 'ha-bindiface': 'eth1', 'ha-mcastport': '5405', } vip_params = 'params ip="%s" cidr_netmask="255.255.255.0" nic="%s"' % \ (_ha_config['vip'], _ha_config['vip_iface']) _get_ha_config.return_value = _ha_config self.get_iface_for_address.return_value = 'eth0' self.get_netmask_for_address.return_value = '255.255.255.0' _relation_data = { 'init_services': {'res_neutron_haproxy': 'haproxy'}, 'corosync_bindiface': _ha_config['ha-bindiface'], 'corosync_mcastport': _ha_config['ha-mcastport'], 'resources': { 'res_neutron_eth0_vip': 'ocf:heartbeat:IPaddr2', 'res_neutron_haproxy': 'lsb:haproxy' }, 'resource_params': { 'res_neutron_eth0_vip': vip_params, 'res_neutron_haproxy': 'op monitor interval="5s"' }, 'clones': {'cl_nova_haproxy': 'res_neutron_haproxy'} } self._call_hook('ha-relation-joined') self.relation_set.assert_called_with( **_relation_data ) @patch.object(hooks, 'get_hacluster_config') def test_ha_joined_no_bound_ip(self, _get_ha_config): _ha_config = { 'vip': '10.0.0.1', 'ha-bindiface': 'eth1', 'ha-mcastport': '5405', } vip_params = 'params ip="10.0.0.1" cidr_netmask="21" nic="eth120"' _get_ha_config.return_value = _ha_config self.test_config.set('vip_iface', 'eth120') self.test_config.set('vip_cidr', '21') self.get_iface_for_address.return_value = None self.get_netmask_for_address.return_value = None _relation_data = { 'init_services': {'res_neutron_haproxy': 'haproxy'}, 'corosync_bindiface': _ha_config['ha-bindiface'], 'corosync_mcastport': _ha_config['ha-mcastport'], 'resources': { 'res_neutron_eth120_vip': 'ocf:heartbeat:IPaddr2', 'res_neutron_haproxy': 'lsb:haproxy' }, 'resource_params': { 'res_neutron_eth120_vip': vip_params, 'res_neutron_haproxy': 'op monitor interval="5s"' }, 'clones': {'cl_nova_haproxy': 'res_neutron_haproxy'} } self._call_hook('ha-relation-joined') self.relation_set.assert_called_with( **_relation_data ) @patch.object(hooks, 'get_hacluster_config') def test_ha_joined_with_ipv6(self, _get_ha_config): self.test_config.set('prefer-ipv6', 'True') _ha_config = { 'vip': '2001:db8:1::1', 'vip_cidr': '64', 'vip_iface': 'eth0', 'ha-bindiface': 'eth1', 'ha-mcastport': '5405', } vip_params = 'params ipv6addr="%s" ' \ 'cidr_netmask="ffff.ffff.ffff.ffff" ' \ 'nic="%s"' % \ (_ha_config['vip'], _ha_config['vip_iface']) _get_ha_config.return_value = _ha_config self.get_iface_for_address.return_value = 'eth0' self.get_netmask_for_address.return_value = 'ffff.ffff.ffff.ffff' _relation_data = { 'init_services': {'res_neutron_haproxy': 'haproxy'}, 'corosync_bindiface': _ha_config['ha-bindiface'], 'corosync_mcastport': _ha_config['ha-mcastport'], 'resources': { 'res_neutron_eth0_vip': 'ocf:heartbeat:IPv6addr', 'res_neutron_haproxy': 'lsb:haproxy' }, 'resource_params': { 'res_neutron_eth0_vip': vip_params, 'res_neutron_haproxy': 'op monitor interval="5s"' }, 'clones': {'cl_nova_haproxy': 'res_neutron_haproxy'} } self._call_hook('ha-relation-joined') self.relation_set.assert_called_with( **_relation_data ) def test_ha_changed(self): self.test_relation.set({ 'clustered': 'true', }) self.relation_ids.side_effect = self._fake_relids _n_api_rel_joined = self.patch('neutron_api_relation_joined') _id_rel_joined = self.patch('identity_joined') self._call_hook('ha-relation-changed') self.assertTrue(_n_api_rel_joined.called) self.assertTrue(_id_rel_joined.called) def test_ha_changed_not_clustered(self): self.test_relation.set({ 'clustered': None, }) self.relation_ids.side_effect = self._fake_relids _n_api_rel_joined = self.patch('neutron_api_relation_joined') _id_rel_joined = self.patch('identity_joined') self._call_hook('ha-relation-changed') self.assertFalse(_n_api_rel_joined.called) self.assertFalse(_id_rel_joined.called) def test_configure_https(self): self.CONFIGS.complete_contexts.return_value = ['https'] self.relation_ids.side_effect = self._fake_relids _id_rel_joined = self.patch('identity_joined') hooks.configure_https() calls = [call('a2dissite', 'openstack_https_frontend'), call('service', 'apache2', 'reload')] self.check_call.assert_called_has_calls(calls) self.assertTrue(_id_rel_joined.called) def test_configure_https_nohttps(self): self.CONFIGS.complete_contexts.return_value = [] self.relation_ids.side_effect = self._fake_relids _id_rel_joined = self.patch('identity_joined') hooks.configure_https() calls = [call('a2dissite', 'openstack_https_frontend'), call('service', 'apache2', 'reload')] self.check_call.assert_called_has_calls(calls) self.assertTrue(_id_rel_joined.called) def test_conditional_neutron_migration_icehouse(self): self.os_release.return_value = 'icehouse' hooks.conditional_neutron_migration() self.log.assert_called_with( 'Not running neutron database migration as migrations are handled ' 'by the neutron-server process or nova-cloud-controller charm.' ) def test_conditional_neutron_migration_ncc_rel_leader_juno(self): self.test_relation.set({ 'allowed_units': 'neutron-api/0 neutron-api/1 neutron-api/4', }) self.local_unit.return_value = 'neutron-api/1' self.is_elected_leader.return_value = True self.os_release.return_value = 'juno' hooks.conditional_neutron_migration() self.log.assert_called_with( 'Not running neutron database migration as migrations are handled' ' by the neutron-server process or nova-cloud-controller charm.' ) def test_conditional_neutron_migration_ncc_rel_leader_kilo(self): self.test_relation.set({ 'allowed_units': 'neutron-api/0 neutron-api/1 neutron-api/4', }) self.local_unit.return_value = 'neutron-api/1' self.is_elected_leader.return_value = True self.os_release.return_value = 'kilo' hooks.conditional_neutron_migration() self.migrate_neutron_database.assert_called_with() self.service_restart.assert_called_with('neutron-server') def test_conditional_neutron_migration_ncc_rel_notleader(self): self.is_elected_leader.return_value = False self.os_release.return_value = 'juno' hooks.conditional_neutron_migration() self.assertFalse(self.migrate_neutron_database.called) self.assertFalse(self.service_restart.called) self.log.assert_called_with( 'Not running neutron database migration as migrations are handled ' 'by the neutron-server process or nova-cloud-controller charm.' )