[Openstack] [Neutron] Openvswitch agent not alive

Silvia Fichera fichera.sil at gmail.com
Thu May 5 15:17:34 UTC 2016


I have rebooted the machine and the agent is now up.
But I still can't ping  from the floating IP that I have assigned.

2016-05-05 14:06 GMT+02:00 Vikram Choudhary <vikschw at gmail.com>:

> Can you please check your disk space.. I can find memory failure ..
>
> 2016-05-05 09:58:19.263 TRACE neutron* OSError: [Errno 12] Cannot
> allocate memory*
>
> On Thu, May 5, 2016 at 4:55 PM, Silvia Fichera <fichera.sil at gmail.com>
> wrote:
>
>> from the screen there are few errors and than q-agt fails:
>>
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/usr/lib/python2.7/contextlib.py", line 35, in __exit__
>> 2016-05-05 09:58:19.263 TRACE neutron     self.gen.throw(type, value,
>> traceback)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/polling.py", line 38, in
>> get_polling_manager
>> 2016-05-05 09:58:19.263 TRACE neutron     pm.stop()
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/polling.py", line 56, in stop
>> 2016-05-05 09:58:19.263 TRACE neutron     self._monitor.stop()
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/async_process.py", line 128, in stop
>> 2016-05-05 09:58:19.263 TRACE neutron     self._kill(kill_signal)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/ovsdb_monitor.py", line 115, in
>> _kill
>> 2016-05-05 09:58:19.263 TRACE neutron     super(SimpleInterfaceMonitor,
>> self)._kill(*args, **kwargs)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/async_process.py", line 161, in
>> _kill
>> 2016-05-05 09:58:19.263 TRACE neutron     pid = self.pid
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/async_process.py", line 157, in pid
>> 2016-05-05 09:58:19.263 TRACE neutron     run_as_root=self.run_as_root)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/utils.py", line 277, in
>> get_root_helper_child_pid
>> 2016-05-05 09:58:19.263 TRACE neutron     pid = find_child_pids(pid)[0]
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/utils.py", line 203, in
>> find_child_pids
>> 2016-05-05 09:58:19.263 TRACE neutron     log_fail_as_error=False)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/utils.py", line 120, in execute
>> 2016-05-05 09:58:19.263 TRACE neutron     addl_env=addl_env)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/agent/linux/utils.py", line 89, in
>> create_process
>> 2016-05-05 09:58:19.263 TRACE neutron     stderr=subprocess.PIPE)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/opt/stack/neutron/neutron/common/utils.py", line 199, in subprocess_popen
>> 2016-05-05 09:58:19.263 TRACE neutron     close_fds=close_fds, env=env)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/usr/local/lib/python2.7/dist-packages/eventlet/green/subprocess.py", line
>> 53, in __init__
>> 2016-05-05 09:58:19.263 TRACE neutron
>> subprocess_orig.Popen.__init__(self, args, 0, *argss, **kwds)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/usr/lib/python2.7/subprocess.py", line 710, in __init__
>> 2016-05-05 09:58:19.263 TRACE neutron     errread, errwrite)
>> 2016-05-05 09:58:19.263 TRACE neutron   File
>> "/usr/lib/python2.7/subprocess.py", line 1223, in _execute_child
>> 2016-05-05 09:58:19.263 TRACE neutron     self.pid = os.fork()
>> 2016-05-05 09:58:19.263 TRACE neutron OSError: [Errno 12] Cannot allocate
>> memory
>> 2016-05-05 09:58:19.263 TRACE neutron
>> 2016-05-05 09:58:20.310 INFO oslo_rootwrap.client
>> [req-a61d57b4-aa7d-4b1a-ad73-d4eb36c37a4a None None] Stopping rootwrap
>> daemon process with pid=18261
>> q-agt failed to start
>>
>> 2016-05-05 12:31 GMT+02:00 Vikram Choudhary <vikschw at gmail.com>:
>>
>>> Can you navigate to the q-agt devstack screen to check what's going on?
>>>
>>> Execute screen -x and then go to the q-agt screen by using CTRL+A N
>>> On May 5, 2016 3:53 PM, "Silvia Fichera" <fichera.sil at gmail.com> wrote:
>>>
>>>> There is no error in q-svc and when I try to open q-agt the system
>>>> crashes.
>>>> Il 05/Mag/2016 12:03, "Vikram Choudhary" <vikschw at gmail.com> ha
>>>> scritto:
>>>>
>>>> Can you check q-agt and q-svc logs for abnormalities?
>>>> On May 5, 2016 3:29 PM, "Silvia Fichera" <fichera.sil at gmail.com> wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> I have installed OpenStack via Devstack, Liberty, I created the
>>>>> external network, the private one and the router to connect each other,
>>>>> launched instances and assigned the floating IP.
>>>>>
>>>>> BUT when I check the connectivity I can't ping the router interface
>>>>> and from the instances, I can't ping an external address.
>>>>>
>>>>> I have checked
>>>>> neutron agent-list
>>>>>
>>>>> id | agent_type | host | alive | admin_state_up | binary |
>>>>> +--------------------------------------+--------------------+-----------+-------+----------------+---------------------------+
>>>>> |
>>>>>
>>>>> 0b1a6478-4f1d-4338-a45d-112fda0c46af | DHCP agent | devstack1 | :-) |
>>>>> True | neutron-dhcp-agent |
>>>>>
>>>>> | 53a726ca-d874-41da-a06e-9e30624e6fce | Open vSwitch agent |
>>>>> devstack1 | xxx | True | neutron-openvswitch-agent |
>>>>>
>>>>> | a8938910-8ef2-4894-a31c-5047d536156d | L3 agent | devstack1 | :-) |
>>>>> True | neutron-l3-agent |
>>>>>
>>>>> | ede1be74-12fc-435c-9f4b-ef44ae088a2d | Metadata agent | devstack1 |
>>>>> :-) | True | neutron-metadata-agent |
>>>>> +--------------------------------------+--------------------+-----------+-------+----------------+---------------------------+
>>>>>
>>>>> the openswitch agent is not alive.
>>>>>
>>>>> How to debug it?
>>>>>
>>>>>
>>>>> --
>>>>> Silvia Fichera
>>>>>
>>>>> _______________________________________________
>>>>> Mailing list:
>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>> Post to     : openstack at lists.openstack.org
>>>>> Unsubscribe :
>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>>>
>>>>>
>>
>>
>> --
>> Silvia Fichera
>>
>
>


-- 
Silvia Fichera
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