[ovirt-devel] [vdsm] Connection refused when talking to jsonrpc

[Piotr Kliczewski]

On Tue, Nov 8, 2016 at 8:51 PM, Martin Perina <mperina at redhat.com> wrote:

> Adding Piotr
>
> On Tue, Nov 8, 2016 at 5:52 PM, Martin Sivak <msivak at redhat.com> wrote:
>
>> Hi,
>>
>> mom-vdsm.service contains:
>>
>> Requires=vdsmd.service
>> After=vdsmd.service
>>
>> So when Shira restarted vdsm, mom was also restarted.
>>
>> [journalctl --unit vdsmd]
>> Nov 08 18:25:27 RHEL7.2Server systemd[1]: Stopping Virtual Desktop
>> Server Manager...
>> Nov 08 18:25:27 RHEL7.2Server vdsmd_init_common.sh[3053]: vdsm:
>> Running run_final_hooks
>> Nov 08 18:25:27 RHEL7.2Server systemd[1]: Starting Virtual Desktop
>> Server Manager...
>>
>> [journalctl --unit mom-vdsm]
>> Nov 08 18:17:23 RHEL7.2Server systemd[1]: Starting MOM instance
>> configured for VDSM purposes...
>> Nov 08 18:25:16 RHEL7.2Server systemd[1]: Stopping MOM instance
>> configured for VDSM purposes...
>> Nov 08 18:25:29 RHEL7.2Server systemd[1]: Started MOM instance
>> configured for VDSM purposes.
>>
>>
>> But mom then immediately failed with:
>>
>> 2016-11-08 18:25:08,008 - mom.RPCServer - INFO - ping()
>> 2016-11-08 18:25:08,010 - mom.RPCServer - INFO - getStatistics()
>> 2016-11-08 18:25:17,028 - mom.RPCServer - INFO - RPC Server ending
>> 2016-11-08 18:25:24,705 - mom.GuestManager - INFO - Guest Manager ending
>> 2016-11-08 18:25:26,575 - mom.HostMonitor - INFO - Host Monitor ending
>>
>> 2016-11-08 18:25:29,869 - mom - INFO - MOM starting
>> 2016-11-08 18:25:29,905 - mom.HostMonitor - INFO - Host Monitor starting
>> 2016-11-08 18:25:29,905 - mom - INFO - hypervisor interface
>> vdsmjsonrpcbulk
>> 2016-11-08 18:25:30,029 - mom.vdsmInterface - ERROR - Cannot connect
>> to VDSM! [Errno 111] Connection refused
>> 2016-11-08 18:25:30,030 - mom - ERROR - Failed to initialize MOM threads
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.7/site-packages/mom/__init__.py", line 29, in
>> run
>>     hypervisor_iface = self.get_hypervisor_interface()
>>   File "/usr/lib/python2.7/site-packages/mom/__init__.py", line 217,
>> in get_hypervisor_interface
>>     return module.instance(self.config)
>>   File "/usr/lib/python2.7/site-packages/mom/HypervisorInterfaces/v
>> dsmjsonrpcbulkInterface.py",
>> line 47, in instance
>>     return JsonRpcVdsmBulkInterface()
>>   File "/usr/lib/python2.7/site-packages/mom/HypervisorInterfaces/v
>> dsmjsonrpcbulkInterface.py",
>> line 29, in __init__
>>     super(JsonRpcVdsmBulkInterface, self).__init__()
>>   File "/usr/lib/python2.7/site-packages/mom/HypervisorInterfaces/v
>> dsmjsonrpcInterface.py",
>> line 43, in __init__
>>     .orRaise(RuntimeError, 'No connection to VDSM.')
>>   File "/usr/lib/python2.7/site-packages/mom/optional.py", line 28, in
>> orRaise
>>     raise exception(*args, **kwargs)
>> RuntimeError: No connection to VDSM.
>>
>>
>> The question here is, how much time does VDSM need to allow jsonrpc to
>> connect and request a ping and list of VMs?
>>
>>
It depends on recovery logic in vdsm and it can take quite some time.

Please share vdsm logs so I could take a look?


>
>> Martin
>> _______________________________________________
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>>
>
>
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