Neutron cann't find resources, got 404 when executing l2-gateway-create command

[Ravi Shankar S]

I executed the below l2 gateway command and got the resource not found error.
 neutron l2-gateway-create gw1 --tenant_id $(openstack project list | grep '\sadmin' | awk '{print $2}') --device name=<name>,interface_names=<name>

       I am not sure it is a l2 gateway or neutron client issue.

Debug logs for the l2 gateawy create command:
=============================================

 nvo@nvo-PowerEdge-R620:~/devstack_master/devstack$ neutron l2-gateway-create --tenant_id $(openstack project list | grep '\sadmin' | awk '{print $2}') --device name=172.17.27.168,interface_names="Fo 0/116" gw1
   The resource could not be found.<br /><br />

   Neutron server returns request_ids: ['req-ab68ae99-1f2d-4de5-aa41-35d67e7cce90']
   nvo@nvo-PowerEdge-R620:~/devstack_master/devstack$ netsta -an | grep 35357^C
   nvo@nvo-PowerEdge-R620:~/devstack_master/devstack$ neutron l2-gateway-create --tenant_id $(openstack project list | grep '\sadmin' | awk '{print $2}') --device name=172.17.27.168,interface_names="Fo 0/116" gw1 --debug
   DEBUG: stevedore.extension found extension EntryPoint.parse('v2token = keystoneauth1.loading._plugins.identity.v2:Token')
   DEBUG: stevedore.extension found extension EntryPoint.parse('admin_token = keystoneauth1.loading._plugins.admin_token:AdminToken')
   DEBUG: stevedore.extension found extension EntryPoint.parse('v3oidcauthcode = keystoneauth1.loading._plugins.identity.v3:OpenIDConnectAuthorizationCode')
   DEBUG: stevedore.extension found extension EntryPoint.parse('v2password = keystoneauth1.loading._plugins.identity.v2:Password')
   DEBUG: stevedore.extension found extension EntryPoint.parse('v3password = keystoneauth1.loading._plugins.identity.v3:Password')
   DEBUG: stevedore.extension found extension EntryPoint.parse('v3oidcpassword = keystoneauth1.loading._plugins.identity.v3:OpenIDConnectPassword')
   DEBUG: stevedore.extension found extension EntryPoint.parse('token = keystoneauth1.loading._plugins.identity.generic:Token')
   DEBUG: stevedore.extension found extension EntryPoint.parse('v3token = keystoneauth1.loading._plugins.identity.v3:Token')
   DEBUG: stevedore.extension found extension EntryPoint.parse('password = keystoneauth1.loading._plugins.identity.generic:Password')
   DEBUG: stevedore.extension found extension EntryPoint.parse('table = cliff.formatters.table:TableFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('json = cliff.formatters.json_format:JSONFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('shell = cliff.formatters.shell:ShellFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('value = cliff.formatters.value:ValueFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('yaml = cliff.formatters.yaml_format:YAMLFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('yaml = clifftablib.formatters:YamlFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('json = clifftablib.formatters:JsonFormatter')
   DEBUG: stevedore.extension found extension EntryPoint.parse('html = clifftablib.formatters:HtmlFormatter')
   DEBUG: networking_l2gw.l2gatewayclient.l2gw_client_ext._l2_gateway.L2GatewayCreate run(Namespace(columns=[], devices=[{u'interface_names': u'Fo 0/116', u'name': u'172.17.27.168'}], formatter='table', max_width=0, name=u'gw1', noindent=False, prefix='', request_format='json', tenant_id=u'2bf4ce09694d4189bfb45b570050e72e', variables=[]))
   DEBUG: keystoneauth.session REQ: curl -g -i -X GET http://172.17.27.230:5000/v2.0 -H "Accept: application/json" -H "User-Agent: keystoneauth1/2.6.0 python-requests/2.10.0 CPython/2.7.6"
   DEBUG: keystoneauth.session RESP: [200] Date: Thu, 12 May 2016 06:44:44 GMT Server: Apache/2.4.7 (Ubuntu) Vary: X-Auth-Token x-openstack-request-id: req-7dfa77e0-2de6-4293-8ddf-18f32d5598c9 Content-Length: 339 Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Content-Type: application/json
   RESP BODY: {"version": {"status": "stable", "updated": "2014-04-17T00:00:00Z", "media-types": [{"base": "application/json", "type": "application/vnd.openstack.identity-v2.0+json"}], "id": "v2.0", "links": [{"href": "http://172.17.27.230:5000/v2.0/", "rel": "self"}, {"href": "http://docs.openstack.org/", "type": "text/html", "rel": "describedby"}]}}

   DEBUG: keystoneauth.identity.v2 Making authentication request to http://172.17.27.230:5000/v2.0/tokens
   DEBUG: stevedore.extension found extension EntryPoint.parse('l2_gateway_connection = networking_l2gw.l2gatewayclient.l2gw_client_ext._l2_gateway_connection')
   DEBUG: stevedore.extension found extension EntryPoint.parse('l2_gateway = networking_l2gw.l2gatewayclient.l2gw_client_ext._l2_gateway')
   DEBUG: keystoneauth.session REQ: curl -g -i -X POST http://172.17.27.230:9696/v2.0/l2-gateways.json -H "User-Agent: python-neutronclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}c7fcfa8cd418e8c1f3b778d551baef6639565cbe" -d '{"l2_gateway": {"tenant_id": "2bf4ce09694d4189bfb45b570050e72e", "name": "gw1", "devices": [{"interfaces": [{"name": "Fo 0/116"}], "device_name": "172.17.27.168"}]}}'
   DEBUG: keystoneauth.session RESP: [404] Content-Length: 112 Content-Type: application/json; charset=UTF-8 X-Openstack-Request-Id: req-b0aa591f-8972-4b04-868a-db5929a6adc0 Date: Thu, 12 May 2016 06:44:44 GMT Connection: keep-alive
   RESP BODY: {"message": "The resource could not be found.<br /><br />\n\n\n", "code": "404 Not Found", "title": "Not Found"}

   DEBUG: neutronclient.v2_0.client Error message: {"message": "The resource could not be found.<br /><br />\n\n\n", "code": "404 Not Found", "title": "Not Found"}
   ERROR: neutronclient.shell The resource could not be found.<br /><br />

   Neutron server returns request_ids: ['req-b0aa591f-8972-4b04-868a-db5929a6adc0']
   Traceback (most recent call last):
     File "/opt/stack/python-neutronclient/neutronclient/shell.py", line 877, in run_subcommand
       return run_command(cmd, cmd_parser, sub_argv)
     File "/opt/stack/python-neutronclient/neutronclient/shell.py", line 113, in run_command
       return cmd.run(known_args)
     File "/opt/stack/python-neutronclient/neutronclient/neutron/v2_0/__init__.py", line 403, in run
       return super(NeutronCommand, self).run(parsed_args)
     File "/usr/local/lib/python2.7/dist-packages/cliff/display.py", line 79, in run
       column_names, data = self.take_action(parsed_args)
     File "/opt/stack/python-neutronclient/neutronclient/common/extension.py", line 72, in take_action
       return self.execute(parsed_args)
     File "/opt/stack/python-neutronclient/neutronclient/common/extension.py", line 75, in execute
       return super(ClientExtensionCreate, self).take_action(parsed_args)
     File "/opt/stack/python-neutronclient/neutronclient/neutron/v2_0/__init__.py", line 486, in take_action
       data = obj_creator(body)
     File "/opt/stack/python-neutronclient/neutronclient/v2_0/client.py", line 1813, in _fx
       return self.create_ext(path, body)
     File "/opt/stack/python-neutronclient/neutronclient/v2_0/client.py", line 576, in create_ext
       return self.post(path, body=body)
     File "/opt/stack/python-neutronclient/neutronclient/v2_0/client.py", line 347, in post
       headers=headers, params=params)
     File "/opt/stack/python-neutronclient/neutronclient/v2_0/client.py", line 282, in do_request
       self._handle_fault_response(status_code, replybody, resp)
     File "/opt/stack/python-neutronclient/neutronclient/v2_0/client.py", line 257, in _handle_fault_response
       exception_handler_v20(status_code, error_body)
     File "/opt/stack/python-neutronclient/neutronclient/v2_0/client.py", line 84, in exception_handler_v20
       request_ids=request_ids)
   NotFound: The resource could not be found.<br /><br />

   Neutron server returns request_ids: ['req-b0aa591f-8972-4b04-868a-db5929a6adc0']
   nvo@nvo-PowerEdge-R620:~/devstack_master/devstack$

[Ravi Shankar S (mailravi02)]

Adding the version used for neutron and openstack

nvo@nvo-PowerEdge-R620:~/devstack_master/devstack$ neutron --version
4.2.1

nvo@nvo-PowerEdge-R620:~/devstack_master/devstack$ openstack --version
openstack 2.4.0

[vikas (vikas-d-m)]

did your l2gateway agent is connected to ovsdb, which has the physical_switch and physical_port entry?
and this should be populated in neutron db in the respective tables.
please verify.