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[Bug 1849392] Re: Neutron - Stein - Having two external networks will prevent the router from being created.

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Laurent Dumont <1849392@xxxxxxxxxxxxxxxxxx>
Date: Tue, 22 Oct 2019 22:13:38 -0000
Reply-to: Bug 1849392 <1849392@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I can also provide access to the environment where I see the issue.

** Description changed:

- asd
+ I am seeing an issue where creating two networks marked as external will
+ prevent a Neutron router from spawning on the Controllers. Ports
+ attached to those networks will be shown as down.
+ 
+ Environment:
+ - Openstack Stein.
+ - Deployed through Kolla.
+ 
+ 1) One network+subnet (EXT) marked as external with X vlan configured on physnet1. This is expected to be used as the SNAT for a router and floating IPs. Not marked as shared.
+ 2) One network+subnet (PROV) marked as external with Y vlan configured on physnet1. Not currently in use on any qrouters.
+ 3) Create one router with SNAT and the external network set as the EXT network.
+ 4) The router is created within Openstack  but is never created on the Controllers namespaces. All port are marked as down.
+ 5) I've attached the logs.
+ 6) If I clear the gateway from the router, the router is spawned and the interfaces come up.
+ 7) If I re-add the gateway with the EXT network. The router goes down and the interfaces are deleted.
+ 
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent [-] Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.: RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent Traceback (most recent call last):
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 710, in _process_routers_if_compatible
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     self._process_router_if_compatible(router)
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 551, in _process_router_if_compatible
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     router_id=router['id'])
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent 
+ 2019-10-22 18:52:27.200 49 DEBUG neutron.agent.l3.agent [-] Payload:
+ 
+ 2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server [req-f62c802f-d047-45d7-a3eb-b40e8c44f6ae - - - - -] Exception during message handling: TooManyExternalNetworks: More than one external network exists.
+ 2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/api/rpc/handlers/l3_rpc.py", line 254, in get_external_network_id
+ 2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server     net_id = self.plugin.get_external_network_id(context)
+ 2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/db/external_net_db.py", line 149, in get_external_network_id
+ 2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server TooManyExternalNetworks: More than one external network exists.

** Description changed:

  I am seeing an issue where creating two networks marked as external will
  prevent a Neutron router from spawning on the Controllers. Ports
  attached to those networks will be shown as down.
  
  Environment:
  - Openstack Stein.
  - Deployed through Kolla.
  
  1) One network+subnet (EXT) marked as external with X vlan configured on physnet1. This is expected to be used as the SNAT for a router and floating IPs. Not marked as shared.
  2) One network+subnet (PROV) marked as external with Y vlan configured on physnet1. Not currently in use on any qrouters.
  3) Create one router with SNAT and the external network set as the EXT network.
  4) The router is created within Openstack  but is never created on the Controllers namespaces. All port are marked as down.
  5) I've attached the logs.
  6) If I clear the gateway from the router, the router is spawned and the interfaces come up.
  7) If I re-add the gateway with the EXT network. The router goes down and the interfaces are deleted.
  
+ ```
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent [-] Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.: RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent Traceback (most recent call last):
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 710, in _process_routers_if_compatible
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     self._process_router_if_compatible(router)
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 551, in _process_router_if_compatible
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     router_id=router['id'])
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
- 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent 
+ 2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent
  2019-10-22 18:52:27.200 49 DEBUG neutron.agent.l3.agent [-] Payload:
  
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server [req-f62c802f-d047-45d7-a3eb-b40e8c44f6ae - - - - -] Exception during message handling: TooManyExternalNetworks: More than one external network exists.
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/api/rpc/handlers/l3_rpc.py", line 254, in get_external_network_id
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server     net_id = self.plugin.get_external_network_id(context)
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/db/external_net_db.py", line 149, in get_external_network_id
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server TooManyExternalNetworks: More than one external network exists.
+ ```

** Description changed:

  I am seeing an issue where creating two networks marked as external will
  prevent a Neutron router from spawning on the Controllers. Ports
  attached to those networks will be shown as down.
  
  Environment:
  - Openstack Stein.
  - Deployed through Kolla.
  
  1) One network+subnet (EXT) marked as external with X vlan configured on physnet1. This is expected to be used as the SNAT for a router and floating IPs. Not marked as shared.
  2) One network+subnet (PROV) marked as external with Y vlan configured on physnet1. Not currently in use on any qrouters.
  3) Create one router with SNAT and the external network set as the EXT network.
  4) The router is created within Openstack  but is never created on the Controllers namespaces. All port are marked as down.
  5) I've attached the logs.
  6) If I clear the gateway from the router, the router is spawned and the interfaces come up.
  7) If I re-add the gateway with the EXT network. The router goes down and the interfaces are deleted.
  
- ```
+ 
+ -----------------
+ 
+ 
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent [-] Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.: RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent Traceback (most recent call last):
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 710, in _process_routers_if_compatible
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     self._process_router_if_compatible(router)
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 551, in _process_router_if_compatible
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     router_id=router['id'])
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent
  2019-10-22 18:52:27.200 49 DEBUG neutron.agent.l3.agent [-] Payload:
  
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server [req-f62c802f-d047-45d7-a3eb-b40e8c44f6ae - - - - -] Exception during message handling: TooManyExternalNetworks: More than one external network exists.
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/api/rpc/handlers/l3_rpc.py", line 254, in get_external_network_id
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server     net_id = self.plugin.get_external_network_id(context)
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/db/external_net_db.py", line 149, in get_external_network_id
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server TooManyExternalNetworks: More than one external network exists.
- ```

** Changed in: neutron
       Status: Invalid => New

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https://bugs.launchpad.net/bugs/1849392

Title:
  Neutron - Stein - Having two external networks will prevent the router
  from being created.

Status in neutron:
  New

Bug description:
  I am seeing an issue where creating two networks marked as external
  will prevent a Neutron router from spawning on the Controllers. Ports
  attached to those networks will be shown as down.

  Environment:
  - Openstack Stein.
  - Deployed through Kolla.

  1) One network+subnet (EXT) marked as external with X vlan configured on physnet1. This is expected to be used as the SNAT for a router and floating IPs. Not marked as shared.
  2) One network+subnet (PROV) marked as external with Y vlan configured on physnet1. Not currently in use on any qrouters.
  3) Create one router with SNAT and the external network set as the EXT network.
  4) The router is created within Openstack  but is never created on the Controllers namespaces. All port are marked as down.
  5) I've attached the logs.
  6) If I clear the gateway from the router, the router is spawned and the interfaces come up.
  7) If I re-add the gateway with the EXT network. The router goes down and the interfaces are deleted.

  
  -----------------

  
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent [-] Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.: RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent Traceback (most recent call last):
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 710, in _process_routers_if_compatible
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     self._process_router_if_compatible(router)
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 551, in _process_router_if_compatible
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent     router_id=router['id'])
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
  2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent
  2019-10-22 18:52:27.200 49 DEBUG neutron.agent.l3.agent [-] Payload:

  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server [req-f62c802f-d047-45d7-a3eb-b40e8c44f6ae - - - - -] Exception during message handling: TooManyExternalNetworks: More than one external network exists.
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/api/rpc/handlers/l3_rpc.py", line 254, in get_external_network_id
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server     net_id = self.plugin.get_external_network_id(context)
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server   File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/db/external_net_db.py", line 149, in get_external_network_id
  2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server TooManyExternalNetworks: More than one external network exists.

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References

[Bug 1849392] [NEW] Neutron - Stein - Having two external networks will prevent the router from being created.
From: Laurent Dumont, 2019-10-22