** Description changed: In patch [1] it introduced a binding of DB uniq constraint for L3 agent gateway. In some extreme case the DvrFipGatewayPortAgentBinding is in DB while the gateway port not. The current code path only checks the binding existence which will pass a "None" port to the following code path that results an AttributeError. [1] https://review.opendev.org/#/c/702547/ Exception log: 2020-06-11 15:39:28.361 1285214 INFO neutron.db.l3_dvr_db [None req-d6a41187-2495-46bf-a424-ab7195c0ecb1 - - - - -] Floating IP Agent Gateway port for network 3fcb7702-ae0b-46b4-807f-8ae94d656dd3 does not exist on host host-compute-1. Creating one. 2020-06-11 15:39:28.370 1285214 DEBUG neutron.db.l3_dvr_db [None req-d6a41187-2495-46bf-a424-ab7195c0ecb1 - - - - -] Floating IP Agent Gateway port for network 3fcb7702-ae0b-46b4-807f-8ae94d656dd3 already exists on host host-compute-1. Probably it was just created by other worker. create_fip_agent_gw_port_if_not_exists /usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py:927 2020-06-11 15:39:28.390 1285214 DEBUG neutron.db.l3_dvr_db [None req-d6a41187-2495-46bf-a424-ab7195c0ecb1 - - - - -] Floating IP Agent Gateway port None found for the destination host: host-compute-1 create_fip_agent_gw_port_if_not_exists /usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py:933 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server [None req-d6a41187-2495-46bf-a424-ab7195c0ecb1 - - - - -] Exception during message handling: AttributeError: 'NoneType' object has no attribute 'get' 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server Traceback (most recent call last): 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 170, in _process_incoming 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server res = self.dispatcher.dispatch(message) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 220, in dispatch 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server return self._do_dispatch(endpoint, method, ctxt, args) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 190, in _do_dispatch 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server result = func(ctxt, **new_args) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 91, in wrapped 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server setattr(e, '_RETRY_EXCEEDED', True) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__ 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server self.force_reraise() 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server six.reraise(self.type_, self.value, self.tb) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 87, in wrapped 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server return f(*args, **kwargs) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 147, in wrapper 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server ectxt.value = e.inner_exc 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__ 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server self.force_reraise() 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server six.reraise(self.type_, self.value, self.tb) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 135, in wrapper 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server return f(*args, **kwargs) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 126, in wrapped 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server LOG.debug("Retry wrapper got retriable exception: %s", e) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__ 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server self.force_reraise() 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server six.reraise(self.type_, self.value, self.tb) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 122, in wrapped 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server return f(*dup_args, **dup_kwargs) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/api/rpc/handlers/l3_rpc.py", line 348, in get_agent_gateway_port 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server admin_ctx, network_id, host) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 953, in create_fip_agent_gw_port_if_not_exists 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server self._populate_mtu_and_subnets_for_ports(context, [agent_port]) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/l3_db.py", line 1978, in _populate_mtu_and_subnets_for_ports 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server for p in self._each_port_having_fixed_ips(ports)] 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/neutron/db/l3_db.py", line 1925, in _each_port_having_fixed_ips 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server fixed_ips = port.get('fixed_ips', []) 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server AttributeError: 'NoneType' object has no attribute 'get' 2020-06-11 15:39:28.391 1285214 ERROR oslo_messaging.rpc.server ------------------------------------------------------------------------- [SRU] [Impact] In some cases the DvrFipGatewayPortAgentBinding is in DB but the gateway port does not exist. This resulted in connectivity issues to FIP for the new VMs launched on that compute node. The fix creates the gateway port if it does not exist. - [Test Case] + [Test Plan] This is a race condition and difficult to reproduce. The test case simulated the error condition to verify the fix. * Deploy openstack with dvr l3ha and centralised snat on neutron nodes * Deploy instances and delete them. This step is to ensure FIP Agent gateway's are created on compute nodes Check the following command to see FIP Agent gateway information openstack port list --network ext_net -c id -c device_id -c binding_host_id -c device_owner -c fixed_ips | grep floatingip_agent_gateway * Pick one of the compute node that has no instances and delete the FIP Agent gateway port (port id can be determined from above command) openstack port delete <port id> * Launch an instance on the compute node openstack server create --wait --image cirros --flavor m1.cirros --nic net-id=<network id> --availability-zone nova:<hostname> cirros-test1 * Verify neutron-server logs for error ERROR oslo_messaging.rpc.server AttributeError: 'NoneType' object has no attribute 'get' * Assign floating ip and tried to ping fip and the ping fails [Where problems could occur] The fix itself adds an extra check to determine the cases when the gateway port needs to be created. And hence it is not expected to cause any regression.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883089 Title: [L3] floating IP failed to bind due to no agent gateway port(fip-ns) To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1883089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs