Open Stack

Hi,

Suddenly we have observed few VM down . then we have found some agent are
getting down (XXX) , agents are getting UP and down randomly. Please check
the attachment.

////////////////////////////////////////////////////////////////////////////////////////////////////
/sqlalchemy/pool.py", line 788, in _checkout\n    fairy =
_ConnectionRecord.checkout(pool)\n', u'  File
"/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 532, in
checkout\n    rec = pool._do_get()\n', u'  File
"/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 1186, in
_do_get\n    (self.size(), self.overflow(), self._timeout),
code="3o7r")\n', u'TimeoutError: QueuePool limit of size 5 overflow 50
reached, connection timed out, timeout 30 (Background on this error at:
http://sqlalche.me/e/3o7r)\n'].
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent Traceback (most
recent call last):
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent   File
"/usr/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 837, in
_report_state
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent     True)
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent   File
"/usr/lib/python2.7/site-packages/neutron/agent/rpc.py", line 97, in
report_state
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent     return
method(context, 'report_state', **kwargs)
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent   File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 179,
in call
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent
retry=self.retry)
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent   File
"/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 133,
in _send
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent     retry=retry)
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent   File
"/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py",
line 645, in send
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent
call_monitor_timeout, retry=retry)
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent   File
"/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py",
line 636, in _send
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent     raise result
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent RemoteError:
Remote error: TimeoutError QueuePool limit of size 5 overflow 50 reached,
connection timed out, timeout 30 (Background on this error at:
http://sqlalche.me/e/3o7r)
2022-01-24 01:05:39.592 302841 ERROR neutron.agent.l3.agent [u'Traceback
(most recent call last):\n', u'  File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 163,
in _process_incoming\n    res = self.dispatcher.dispatch(message)\n', u'
 File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py",
line 265, in dispatch\n    return self._do_dispatch(endpoint, method, ctxt,
args)\n', u'  File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line
194, in _do_dispatch\n

/////////////////////////////////////////////////////////////////////////////////

Is there anything related with the following default configuration.

/etc/neutron/neutron.conf
#max_pool_size = 5
#max_overflow = 50

regards,
Munna
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