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Neutron: router-gateway-set a la Red Externa falla

2015-11-24

Neutron: router-gateway-set a la Red Externa falla

Machine-translated — the English original is authoritative.

Hoy me pidieron investigar una «red de OpenStack que falla» donde un cliente había estado evaluando el producto durante el último mes. Como siempre, no se cambió nada, simplemente dejó de funcionar 😉

Otro desafío con este compromiso fue que no tenía acceso directo al sistema: estaba en otro país y no se me concedió acceso remoto. Así que, elaboré un documento de Google con una lista detallada de comandos y lo compartí con el operador de OpenStack, y lo utilizamos como base para nuestra colaboración e investigación. Los próximos dos artículos de blog son básicamente el documento final que se generó.

La queja inicial era que la red externa no funcionaba.

Así es como se veía el fallo:

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron router-gateway-set 8c8a0159-2b37-4fae-93e9-b302a9d59573 35510045-decf-491e-9990-87a3f77f0284

Request Failed: internal server error while processing your request.

No olvides que puedes añadir el interruptor “–debug” para obtener una salida más detallada..

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron --debug router-gateway-set 8c8a0159-2b37-4fae-93e9-b302a9d59573 35510045-decf-491e-9990-87a3f77f0284

DEBUG: keystoneclient.session REQ: curl -i -X GET https://10.254.25.35:5000/v2.0 -H "Accept: application/json" -H "User-Agent: python-keystoneclient"

DEBUG: keystoneclient.session RESP: [200] content-length: 423 vary: X-Auth-Token keep-alive: timeout=5, max=100 server: Apache/2.4.10 (Debian) connection: Keep-Alive date: Fri, 20 Nov 2015 16:27:30 GMT 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"}, {"base": "application/xml", "type": "application/vnd.openstack.identity-v2.0+xml"}], "id": "v2.0", "links": [{"href": "https://10.254.25.35:5000/v2.0/", "rel": "self"}, {"href": "http://docs.openstack.org/", "type": "text/html", "rel": "describedby"}]}}

DEBUG: neutronclient.neutron.v2_0.router.SetGatewayRouter run(Namespace(disable_snat=False, external_network_id=u'35510045-decf-491e-9990-87a3f77f0284', request_format='json', router_id=u'8c8a0159-2b37-4fae-93e9-b302a9d59573'))

DEBUG: keystoneclient.auth.identity.v2 Making authentication request to https://10.254.25.35:5000/v2.0/tokens

DEBUG: keystoneclient.session REQ: curl -i -X GET https://10.254.25.35:9696/v2.0/routers.json?fields=id&id=8c8a0159-2b37-4fae-93e9-b302a9d59573 -H "User-Agent: python-neutronclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}04e2fb3010f4069945373862d00e12d9e34c488a"

DEBUG: keystoneclient.session RESP: [200] date: Fri, 20 Nov 2015 16:27:31 GMT connection: keep-alive content-type: application/json; charset=UTF-8 content-length: 61 x-openstack-request-id: req-b6469ccc-b81e-4ae1-82ea-e0413bd46f3d

RESP BODY: {"routers": [{"id": "8c8a0159-2b37-4fae-93e9-b302a9d59573"}]}

DEBUG: keystoneclient.session REQ: curl -i -X GET https://10.254.25.35:9696/v2.0/networks.json?fields=id&id=35510045-decf-491e-9990-87a3f77f0284 -H "User-Agent: python-neutronclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}04e2fb3010f4069945373862d00e12d9e34c488a"

DEBUG: keystoneclient.session RESP: [200] date: Fri, 20 Nov 2015 16:27:31 GMT connection: keep-alive content-type: application/json; charset=UTF-8 content-length: 62 x-openstack-request-id: req-e39fba85-c775-4296-a52f-a83731a5b5f2

RESP BODY: {"networks": [{"id": "35510045-decf-491e-9990-87a3f77f0284"}]}

DEBUG: keystoneclient.session REQ: curl -i -X PUT https://10.254.25.35:9696/v2.0/routers/8c8a0159-2b37-4fae-93e9-b302a9d59573.json -H "User-Agent: python-neutronclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}04e2fb3010f4069945373862d00e12d9e34c488a" -d '{"router": {"external_gateway_info": {"network_id": "35510045-decf-491e-9990-87a3f77f0284"}}}'

DEBUG: keystoneclient.session RESP:

DEBUG: neutronclient.v2_0.client Error message: {"NeutronError": {"message": "Request Failed: internal server error while processing your request.", "type": "HTTPInternalServerError", "detail": ""}}

ERROR: neutronclient.shell Request Failed: internal server error while processing your request.

Traceback (most recent call last):

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/shell.py", line 701, in run_subcommand

   return run_command(cmd, cmd_parser, sub_argv)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/shell.py", line 92, in run_command

   return cmd.run(known_args)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/neutron/v2_0/router.py", line 205, in run

   neutron_client.add_gateway_router(_router_id, router_dict)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 98, in with_params

   ret = self.function(instance, *args, **kwargs)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 432, in add_gateway_router

   body={'router': {'external_gateway_info': body}})

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 1322, in put

   headers=headers, params=params)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 1290, in retry_request

   headers=headers, params=params)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 1244, in do_request

   self._handle_fault_response(status_code, replybody)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 1218, in _handle_fault_response

   exception_handler_v20(status_code, des_error_body)

 File "/opt/stack/venvs/openstack/local/lib/python2.7/site-packages/neutronclient/v2_0/client.py", line 66, in exception_handler_v20

   status_code=status_code)

InternalServerError: Request Failed: internal server error while processing your request.

Comprueba los archivos de registro del router que se creó de la siguiente manera:

grep 8c8a0159-2b37-4fae-93e9-b302a9d59573 -l -R /var/log/*

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# grep 8c8a0159-2b37-4fae-93e9-b302a9d59573 -l -R /var/log/*

/var/log/horizon/horizon-json.log

/var/log/horizon/horizon_error.log

/var/log/neutron/neutron-json.log

/var/log/neutron/neutron.log

La investigación del archivo neutron.log tiene la causa raíz del problema –

“TooManyExternalNetworks: More than one external network exists”

neutron.log

Una rápida comprobación con neutron revela la existencia de dos redes externas, algo no soportado por esta versión de OpenStack.

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron net-external-list

+--------------------------------------+---------+-----------------------------------------------------+

| id                                    | name  | subnets                                               |

+--------------------------------------+---------+-----------------------------------------------------+

| 35510045-decf-491e-9990-87a3f77f0284 | ext-net | bfaacf82-7a4f-4e0c-aab9-94f705dc2c11 10.254.27.0/24 |

| f917a3eb-957a-4c0a-baa8-8b20607440a0 | direct  |                                                       |

+--------------------------------------+---------+-----------------------------------------------------+

La solución es simple: eliminar la segunda red externa.

Elimina la nueva red externa llamada direct.

Lista todas las redes actuales

neutron net-list

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron net-list

+--------------------------------------+-------------+-------------------------------------------------------+

| id                                    | name  | subnets                                                    |

+--------------------------------------+-------------+-------------------------------------------------------+

| 35510045-decf-491e-9990-87a3f77f0284 | ext-net | bfaacf82-7a4f-4e0c-aab9-94f705dc2c11 10.254.27.0/24   |

| 4259ab26-a1c4-427e-a7e0-b941368c4e23 | default-net | d20f33e0-82f1-4ce1-80cf-17a27c86d11c 172.0.100.0/24   |

| 73ff3b91-77ad-4ef4-aa67-a99a5ef57650 | demo_net1   | 4a20b788-da40-48a0-b459-5034d2831adf 192.168.111.0/24 |

| a493f23f-3646-49c5-a342-82c0ac7601f6 | lab2-net| 75542425-b437-4433-a9d8-3009527e1435 192.168.1.0/24   |

| d2ad4daa-d004-40bd-afa8-b7e19b8dde67 | HPinternal  | 28d80588-9bf1-415e-a1f3-b08d95d5bf14 10.0.0.0/24  |

| e70da3b0-ad8d-4ec0-9dd7-40ba563d2416 | SVC    | 57929850-9c6a-4917-a8a4-61c033d72705 10.254.26.0/24   |

| e99f2cdd-eb42-4466-9b17-7cb85636c013 | lab1-net1   | 60b9efc0-081f-45fd-b06c-0ce88fc04d50 192.168.113.0/24 |

| f917a3eb-957a-4c0a-baa8-8b20607440a0 | direct  |   |

+--------------------------------------+-------------+-------------------------------------------------------+

Identifica las redes externas

neutron net-external-list

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron net-external-list

+--------------------------------------+---------+-----------------------------------------------------+

| id                                    | name      | subnets |

+--------------------------------------+---------+-----------------------------------------------------+

| 35510045-decf-491e-9990-87a3f77f0284 | ext-net | bfaacf82-7a4f-4e0c-aab9-94f705dc2c11 10.254.27.0/24 |

| f917a3eb-957a-4c0a-baa8-8b20607440a0 | direct  |                                                      |

+--------------------------------------+---------+-----------------------------------------------------+

Elimina la red externa adicional

neutron net-delete direct

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron net-delete direct

Deleted network: direct

root@overcloud-ce-controller-controller0-dlmy4f5tbc5d:~# neutron net-list

+--------------------------------------+-------------+-------------------------------------------------------+

| id                                    | name          | subnets   |

+--------------------------------------+-------------+-------------------------------------------------------+

| 35510045-decf-491e-9990-87a3f77f0284 | ext-net    | bfaacf82-7a4f-4e0c-aab9-94f705dc2c11 10.254.27.0/24   |

| 4259ab26-a1c4-427e-a7e0-b941368c4e23 | default-net | d20f33e0-82f1-4ce1-80cf-17a27c86d11c 172.0.100.0/24   |

| 73ff3b91-77ad-4ef4-aa67-a99a5ef57650 | demo_net1   | 4a20b788-da40-48a0-b459-5034d2831adf 192.168.111.0/24 |

| a493f23f-3646-49c5-a342-82c0ac7601f6 | lab2-net   | 75542425-b437-4433-a9d8-3009527e1435 192.168.1.0/24   |

| d2ad4daa-d004-40bd-afa8-b7e19b8dde67 | HPinternal  | 28d80588-9bf1-415e-a1f3-b08d95d5bf14 10.0.0.0/24  |

| e70da3b0-ad8d-4ec0-9dd7-40ba563d2416 | SVC        | 57929850-9c6a-4917-a8a4-61c033d72705 10.254.26.0/24   |

| e99f2cdd-eb42-4466-9b17-7cb85636c013 | lab1-net1   | 60b9efc0-081f-45fd-b06c-0ce88fc04d50 192.168.113.0/24 |

+--------------------------------------+-------------+-------------------------------------------------------+

El próximo artículo de blog verificará la salud de los servicios básicos de Helion OpenStack y de la red neutron.

Originally published on allthingscloud.eu (2015-11-24).

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