neutron-fwaas Percona-XtraDB-Cluster prohibits use of DML command on a table (neutron.firewall_group_port_associations_v2) without an explicit primary key with pxc_strict_mode = ENFORCING or MASTER'

[Felipe Reyes]

When trying to delete a heat stack in Stein fails, because neutron-server couldn't update firewall groups, the stack trace found in the logs is:

2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager Traceback (most recent call last):
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/neutron_lib/callbacks/manager.py", line 197, in _notify_loop
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager callback(resource, event, trigger, **kwargs)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/neutron_fwaas/services/firewall/fwaas_plugin_v2.py", line 307, in handle_update_port
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager {'firewall_group': {'ports': port_ids}})
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/oslo_log/helpers.py", line 67, in wrapper
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager return method(*args, **kwargs)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/neutron_fwaas/services/firewall/fwaas_plugin_v2.py", line 369, in update_firewall_group
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager return self.driver.update_firewall_group(context, id, firewall_group)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/neutron_fwaas/services/firewall/service_drivers/driver_api.py", line 211, in update_firewall_group
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager context, id, firewall_group_delta)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/neutron_fwaas/db/firewall/v2/firewall_db_v2.py", line 981, in update_firewall_group
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager self._delete_ports_in_firewall_group(context, id)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/neutron_fwaas/db/firewall/v2/firewall_db_v2.py", line 832, in _delete_ports_in_firewall_group
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager firewall_group_id=firewall_group_id).delete()
[...]
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager File "/usr/lib/python3/dist-packages/pymysql/err.py", line 107, in raise_mysql_exception
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager raise errorclass(errno, errval)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager oslo_db.exception.DBError: (pymysql.err.InternalError) (1105, 'Percona-XtraDB-Cluster prohibits use of DML command on a table (neutron.firewall_group_port_associations_v2) without an explicit primary key with pxc_strict_mode = ENFORCING or MASTER') [SQL: 'DELETE FROM firewall_group_port_associations_v2 WHERE firewall_group_port_associations_v2.firewall_group_id = %(firewall_group_id_1)s'] [parameters: {'firewall_group_id_1': '8da85bcb-1e1d-4d5a-b508-25c1d4c85d50'}] (Background on this error at: http://sqlalche.me/e/2j85)
2020-02-11 13:14:21.356 1998511 ERROR neutron_lib.callbacks.manager

[Felipe Reyes (freyes)]

This error is similar to the one reported in Octavia https://bugs.launchpad.net/ubuntu/+source/octavia/+bug/1826875 , but in the case of neutron the table firewall_group_port_associations_v2 has a primary key defined:

firewall_group_port_associations_v2 | CREATE TABLE `firewall_group_port_associations_v2` (
  `firewall_group_id` varchar(36) NOT NULL,
  `port_id` varchar(36) NOT NULL,
  PRIMARY KEY (`firewall_group_id`,`port_id`),
  UNIQUE KEY `uniq_firewallgroupportassociation0port_id` (`port_id`),
  CONSTRAINT `firewall_group_port_associations_v2_ibfk_1` FOREIGN KEY (`firewall_group_id`) REFERENCES `firewall_groups_v2` (`id`) ON DELETE CASCADE,
  CONSTRAINT `firewall_group_port_associations_v2_ibfk_2` FOREIGN KEY (`port_id`) REFERENCES `ports` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8