diff --git a/osm_mon/collector/infra_collectors/base_osinfra.py b/osm_mon/collector/infra_collectors/base_osinfra.py
index 19a21f0..b603d03 100644
--- a/osm_mon/collector/infra_collectors/base_osinfra.py
+++ b/osm_mon/collector/infra_collectors/base_osinfra.py
@@ -22,15 +22,13 @@
 import logging
 from typing import List
 
-from keystoneauth1 import session
-from keystoneauth1.identity import v3
 from keystoneclient.v3 import client as keystone_client
 from novaclient import client as nova_client
 from novaclient import v2 as nova_client_v2
 
 from osm_mon.collector.infra_collectors.base_vim import BaseVimInfraCollector
 from osm_mon.collector.metric import Metric
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.openstack import OpenstackUtils
 from osm_mon.core.common_db import CommonDbClient
 from osm_mon.core.config import Config
 
@@ -86,20 +84,9 @@
             return False
 
     def _build_keystone_client(self, vim_account_id) -> keystone_client.Client:
-        sess = self._get_session(vim_account_id)
+        sess = OpenstackUtils.get_session(vim_account_id)
         return keystone_client.Client(session=sess)
 
     def _build_nova_client(self, vim_account_id) -> nova_client_v2.Client:
-        sess = self._get_session(vim_account_id)
+        sess = OpenstackUtils.get_session(vim_account_id)
         return nova_client.Client("2", session=sess)
-
-    def _get_session(self, vim_account_id: str):
-        creds = CollectorUtils.get_credentials(vim_account_id)
-        verify_ssl = CollectorUtils.is_verify_ssl(creds)
-        auth = v3.Password(auth_url=creds.url,
-                           username=creds.user,
-                           password=creds.password,
-                           project_name=creds.tenant_name,
-                           project_domain_id='default',
-                           user_domain_id='default')
-        return session.Session(auth=auth, verify=verify_ssl)
diff --git a/osm_mon/collector/infra_collectors/vmware.py b/osm_mon/collector/infra_collectors/vmware.py
index 206083a..43be2b2 100644
--- a/osm_mon/collector/infra_collectors/vmware.py
+++ b/osm_mon/collector/infra_collectors/vmware.py
@@ -21,20 +21,20 @@
 # contact:  osslegalrouting@vmware.com
 ##
 
+import json
 import logging
 from typing import List
-
 from xml.etree import ElementTree as XmlElementTree
+
+import requests
 from pyvcloud.vcd.client import BasicLoginCredentials
 from pyvcloud.vcd.client import Client
 
-from osm_mon.collector.utils import CollectorUtils
 from osm_mon.collector.infra_collectors.base_vim import BaseVimInfraCollector
 from osm_mon.collector.metric import Metric
+from osm_mon.collector.utils.collector import CollectorUtils
 from osm_mon.core.common_db import CommonDbClient
 from osm_mon.core.config import Config
-import requests
-import json
 
 log = logging.getLogger(__name__)
 API_VERSION = '27.0'
diff --git a/osm_mon/collector/service.py b/osm_mon/collector/service.py
index 98f3f16..cc4fc1b 100644
--- a/osm_mon/collector/service.py
+++ b/osm_mon/collector/service.py
@@ -7,7 +7,7 @@
 from osm_mon.collector.infra_collectors.vmware import VMwareInfraCollector
 from osm_mon.collector.infra_collectors.vio import VIOInfraCollector
 from osm_mon.collector.metric import Metric
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.collector import CollectorUtils
 from osm_mon.collector.vnf_collectors.juju import VCACollector
 from osm_mon.collector.vnf_collectors.openstack import OpenstackCollector
 from osm_mon.collector.vnf_collectors.vio import VIOCollector
diff --git a/osm_mon/collector/utils/__init__.py b/osm_mon/collector/utils/__init__.py
new file mode 100644
index 0000000..cbff444
--- /dev/null
+++ b/osm_mon/collector/utils/__init__.py
@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2019 Whitestack, LLC
+# *************************************************************
+
+# This file is part of OSM Monitoring module
+# All Rights Reserved to Whitestack, LLC
+
+# 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.
+
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: bdiaz@whitestack.com or glavado@whitestack.com
+##
diff --git a/osm_mon/collector/utils.py b/osm_mon/collector/utils/collector.py
similarity index 100%
rename from osm_mon/collector/utils.py
rename to osm_mon/collector/utils/collector.py
diff --git a/osm_mon/collector/utils/openstack.py b/osm_mon/collector/utils/openstack.py
new file mode 100644
index 0000000..c77ac46
--- /dev/null
+++ b/osm_mon/collector/utils/openstack.py
@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2019 Whitestack, LLC
+# *************************************************************
+
+# This file is part of OSM Monitoring module
+# All Rights Reserved to Whitestack, LLC
+
+# 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.
+
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: bdiaz@whitestack.com or glavado@whitestack.com
+##
+import json
+
+from keystoneauth1 import session
+from keystoneauth1.identity import v3
+
+from osm_mon.collector.utils.collector import CollectorUtils
+
+
+class OpenstackUtils:
+
+    @staticmethod
+    def get_session(vim_account_id: str):
+        creds = CollectorUtils.get_credentials(vim_account_id)
+        verify_ssl = CollectorUtils.is_verify_ssl(creds)
+        vim_config = json.loads(creds.config)
+        project_domain_name = 'Default'
+        user_domain_name = 'Default'
+        if 'project_domain_name' in vim_config:
+            project_domain_name = vim_config['project_domain_name']
+        if 'user_domain_name' in vim_config:
+            user_domain_name = vim_config['user_domain_name']
+        auth = v3.Password(auth_url=creds.url,
+                           username=creds.user,
+                           password=creds.password,
+                           project_name=creds.tenant_name,
+                           project_domain_name=project_domain_name,
+                           user_domain_name=user_domain_name)
+        return session.Session(auth=auth, verify=verify_ssl)
diff --git a/osm_mon/collector/vnf_collectors/openstack.py b/osm_mon/collector/vnf_collectors/openstack.py
index b2ecef0..0215b51 100644
--- a/osm_mon/collector/vnf_collectors/openstack.py
+++ b/osm_mon/collector/vnf_collectors/openstack.py
@@ -26,14 +26,12 @@
 import gnocchiclient.exceptions
 from ceilometerclient.v2 import client as ceilometer_client
 from gnocchiclient.v1 import client as gnocchi_client
-from keystoneauth1 import session
 from keystoneauth1.exceptions.catalog import EndpointNotFound
-from keystoneauth1.identity import v3
 from keystoneclient.v3 import client as keystone_client
 from neutronclient.v2_0 import client as neutron_client
 
 from osm_mon.collector.metric import Metric
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.openstack import OpenstackUtils
 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
 from osm_mon.collector.vnf_metric import VnfMetric
 from osm_mon.core.common_db import CommonDbClient
@@ -71,7 +69,7 @@
         self.backend = self._get_backend(vim_account_id)
 
     def _build_keystone_client(self, vim_account_id: str) -> keystone_client.Client:
-        sess = OpenstackBackend.get_session(vim_account_id)
+        sess = OpenstackUtils.get_session(vim_account_id)
         return keystone_client.Client(session=sess)
 
     def _get_resource_uuid(self, nsr_id: str, vnf_member_index: str, vdur_name: str) -> str:
@@ -140,18 +138,6 @@
     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
         pass
 
-    @staticmethod
-    def get_session(vim_account_id: str):
-        creds = CollectorUtils.get_credentials(vim_account_id)
-        verify_ssl = CollectorUtils.is_verify_ssl(creds)
-        auth = v3.Password(auth_url=creds.url,
-                           username=creds.user,
-                           password=creds.password,
-                           project_name=creds.tenant_name,
-                           project_domain_id='default',
-                           user_domain_id='default')
-        return session.Session(auth=auth, verify=verify_ssl)
-
 
 class GnocchiBackend(OpenstackBackend):
 
@@ -160,11 +146,11 @@
         self.neutron = self._build_neutron_client(vim_account_id)
 
     def _build_gnocchi_client(self, vim_account_id: str) -> gnocchi_client.Client:
-        sess = OpenstackBackend.get_session(vim_account_id)
+        sess = OpenstackUtils.get_session(vim_account_id)
         return gnocchi_client.Client(session=sess)
 
     def _build_neutron_client(self, vim_account_id: str) -> neutron_client.Client:
-        sess = OpenstackBackend.get_session(vim_account_id)
+        sess = OpenstackUtils.get_session(vim_account_id)
         return neutron_client.Client(session=sess)
 
     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
@@ -233,7 +219,7 @@
         self.client = self._build_ceilometer_client(vim_account_id)
 
     def _build_ceilometer_client(self, vim_account_id: str) -> ceilometer_client.Client:
-        sess = OpenstackBackend.get_session(vim_account_id)
+        sess = OpenstackUtils.get_session(vim_account_id)
         return ceilometer_client.Client(session=sess)
 
     def collect_metric(self, metric_type: MetricType, metric_name: str, resource_id: str, interface_name: str):
diff --git a/osm_mon/collector/vnf_collectors/vio.py b/osm_mon/collector/vnf_collectors/vio.py
index 88d3378..0d481ea 100644
--- a/osm_mon/collector/vnf_collectors/vio.py
+++ b/osm_mon/collector/vnf_collectors/vio.py
@@ -33,7 +33,7 @@
 from keystoneauth1.identity import v3
 from novaclient import client as nClient
 
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.collector import CollectorUtils
 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
 from osm_mon.collector.vnf_metric import VnfMetric
 from osm_mon.core.common_db import CommonDbClient
diff --git a/osm_mon/collector/vnf_collectors/vmware.py b/osm_mon/collector/vnf_collectors/vmware.py
index 00ef9ef..720daf1 100644
--- a/osm_mon/collector/vnf_collectors/vmware.py
+++ b/osm_mon/collector/vnf_collectors/vmware.py
@@ -31,7 +31,7 @@
 from pyvcloud.vcd.client import BasicLoginCredentials
 from pyvcloud.vcd.client import Client
 
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.collector import CollectorUtils
 from osm_mon.collector.vnf_collectors.base_vim import BaseVimCollector
 from osm_mon.collector.vnf_metric import VnfMetric
 from osm_mon.core.common_db import CommonDbClient
diff --git a/osm_mon/evaluator/service.py b/osm_mon/evaluator/service.py
index 3865b17..20bb0ad 100644
--- a/osm_mon/evaluator/service.py
+++ b/osm_mon/evaluator/service.py
@@ -71,7 +71,7 @@
                          alarm: Alarm):
         log.debug("_evaluate_metric")
         metric_value = self._get_metric_value(nsr_id, vnf_member_index, vdur_name, metric_name)
-        if not metric_value:
+        if metric_value is None:
             log.warning("No metric result for alarm %s", alarm.id)
             self.queue.put((alarm, AlarmStatus.INSUFFICIENT))
         else:
diff --git a/osm_mon/tests/unit/collector/test_collector_service.py b/osm_mon/tests/unit/collector/test_collector_service.py
index 4dab43f..22d4410 100644
--- a/osm_mon/tests/unit/collector/test_collector_service.py
+++ b/osm_mon/tests/unit/collector/test_collector_service.py
@@ -23,7 +23,7 @@
 from unittest import TestCase, mock
 
 from osm_mon.collector.service import CollectorService
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.collector import CollectorUtils
 from osm_mon.collector.vnf_collectors.openstack import OpenstackCollector
 from osm_mon.core.common_db import CommonDbClient
 from osm_mon.core.config import Config
diff --git a/osm_mon/tests/unit/collector/test_collector_utils.py b/osm_mon/tests/unit/collector/test_collector_utils.py
index a308522..e9f3848 100644
--- a/osm_mon/tests/unit/collector/test_collector_utils.py
+++ b/osm_mon/tests/unit/collector/test_collector_utils.py
@@ -22,7 +22,7 @@
 ##
 from unittest import TestCase, mock
 
-from osm_mon.collector.utils import CollectorUtils
+from osm_mon.collector.utils.collector import CollectorUtils
 from osm_mon.core.config import Config
 from osm_mon.core.database import VimCredentialsRepository, VimCredentials
 
diff --git a/requirements.txt b/requirements.txt
index d1436d8..6215643 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,5 +32,5 @@
 peewee-migrate==1.1.*
 python-novaclient==12.0.*
 python-neutronclient==5.1.*
-git+https://osm.etsi.org/gerrit/osm/common.git@v5.0#egg=osm-common
-git+https://osm.etsi.org/gerrit/osm/N2VC.git@v5.0#egg=n2vc
+git+https://osm.etsi.org/gerrit/osm/common.git#egg=osm-common
+git+https://osm.etsi.org/gerrit/osm/N2VC.git#egg=n2vc