[Openstack] Error Neutron: RTNETLINK answers: File exists

Eugen Block eblock at nde.ag
Fri Jul 27 08:05:36 UTC 2018


Hi,

is there anything in the linuxbridge-agent logs on control and/or  
compute node(s)?
Which neutron services don't start? Can you paste "openstack network  
agent list" output?

The important question is: what was the cause of "neutron stopped  
working" and why did you delete the existing networks? It probably  
would be helpful knowing the reaseon to be able to prevent such  
problemes in the future. Or are the provided logs from before?

We experience network/neutron troubles from time to time, and  
sometimes the only way to fix it is a reboot.

Regards,
Eugen


Zitat von Marcio Prado <marcioprado at marcioprado.eti.br>:

> Good afternoon,
>
> For no apparent reason my Neutron stopped working.
>
> I deleted the networks, subnets and routers, created everything again.
>
> But it does not work. The logs are:
>
>
> 2018-07-26 11:29:16.101 3272 INFO  
> neutron.plugins.ml2.drivers.agent._common_agent  
> [req-9ba0ca9f-aeaf-44b2-ba24-c08556aae0ac - - - - -] Linux bridge  
> agent Agent out of sync with plugin!
> 2018-07-26 11:29:16.101 3272 INFO neutron.agent.securitygroups_rpc  
> [req-9ba0ca9f-aeaf-44b2-ba24-c08556aae0ac - - - - -] Preparing  
> filters for devices set(['tap69feb7be-2b', 'tap0efd5228-b0',  
> 'tap83a57ce5-a8', 'tapd50d137f-f6'])
> 2018-07-26 11:29:18.218 3272 INFO  
> neutron.plugins.ml2.drivers.agent._common_agent  
> [req-9ba0ca9f-aeaf-44b2-ba24-c08556aae0ac - - - - -] Port  
> tap69feb7be-2b updated. Details: {u'profile': {},  
> u'network_qos_policy_id': None, u'qos_policy_id': None,  
> u'allowed_address_pairs': [], u'admin_state_up': True,  
> u'network_id': u'0f293447-ad01-465e-a034-fdaa136a4488',  
> u'segmentation_id': None, u'device_owner':  
> u'network:router_gateway', u'physical_network': u'provider',  
> u'mac_address': u'fa:16:3e:a3:be:5c', u'device': u'tap69feb7be-2b',  
> u'port_security_enabled': False, u'port_id':  
> u'69feb7be-2b9c-4604-a078-32c984d7075a', u'fixed_ips':  
> [{u'subnet_id': u'5ef3df97-d88a-4c60-969c-5a862f04c1e0',  
> u'ip_address': u'192.168.0.14'}], u'network_type': u'flat'}
> 2018-07-26 11:29:18.871 3272 INFO  
> neutron.plugins.ml2.drivers.linuxbridge.agent.arp_protect  
> [req-9ba0ca9f-aeaf-44b2-ba24-c08556aae0ac - - - - -] Skipping ARP  
> spoofing rules for port 'tap69feb7be-2b' because it has port  
> security disabled
> 2018-07-26 11:29:20.208 3272 ERROR neutron.agent.linux.utils  
> [req-9ba0ca9f-aeaf-44b2-ba24-c08556aae0ac - - - - -] Exit code: 2;  
> Stdin: ; Stdout: ; Stderr: RTNETLINK answers: File exists
>
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent  
> [req-9ba0ca9f-aeaf-44b2-ba24-c08556aae0ac - - - - -] Error in agent  
> loop. Devices info: {'current': set(['tap69feb7be-2b',  
> 'tap0efd5228-b0', 'tap83a57ce5-a8', 'tapd50d137f-f6']),  
> 'timestamps': {'tap0efd5228-b0': 9, 'tap69feb7be-2b': 13,  
> 'tap83a57ce5-a8': 10, 'tapd50d137f-f6': 8}, 'removed': set([]),  
> 'added': set(['tap69feb7be-2b', 'tap0efd5228-b0', 'tap83a57ce5-a8',  
> 'tapd50d137f-f6']), 'updated': set([])}
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent Traceback (most  
> recent call last):
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent   File  
> "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/agent/_common_agent.py", line 453, in  
> daemon_loop
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent     sync =  
> self.process_network_devices(device_info)
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent   File  
> "/usr/lib/python2.7/dist-packages/osprofiler/profiler.py", line 153,  
> in wrapper
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent     return f(*args,  
> **kwargs)
> 2018-07-26 11:29:20.219 3272 ERROR  
> neutron.plugins.ml2.drivers.agent._common_agent   File  
> "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/agent/_common_agent.py", line 210, in  
> process_network_devices
>
> Has anyone had similar experience?
>
> -- 
> Marcio Prado
> Analista de TI - Infraestrutura e Redes
> Fone: (35) 9.9821-3561
> www.marcioprado.eti.br
>
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