[ovirt-users] Communication errors between engine and nodes?

[Piotr Kliczewski]

Can you please provide logs from both ends?

On Fri, Mar 13, 2015 at 3:17 PM, Michal Skrivanek
<michal.skrivanek at redhat.com> wrote:
>
> On 13 Mar 2015, at 14:39, Chris Adams wrote:
>
>> Once upon a time, Roel de Rooy <RdeRooy at motto.nl> said:
>>> We are observing the same thing with our oVirt environment.
>>> At random moments (could be a couple of times a day , once a day or even once every couple of days), we receive the "VDSNetworkException" message on one of our nodes.
>>> Haven't seen the "heartbeat exceeded" message, but could be that I overlooked it within our logs.
>>> At some rare occasions, we also do see "Host cannot access the Storage Domain(s) <UNKNOWN> attached to the Data Center", within the GUI.
>>>
>>> VM's will continue to run normally and most of the times the nodes will be in "UP" state again within the same minute.
>>>
>>> Will still haven't found the root cause of this issue.
>>> Our engine is CentOS 6.6 based and it's happing with both Centos 6 and Fedora 20 nodes.
>>> We are using a LCAP bond of 1Gbit ports for our management network.
>>>
>>> As we didn't see any reports about this before, we are currently looking if something network related is causing this.
>>
>> I just opened a BZ on it (since it isn't just me):
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=1201779
>>
>> My cluster went a couple of days without hitting this (as soon as I
>> posted to the list of course), but then it happened several times
>> overnight.  Interestingly, one error logged was communicating with the
>> node currently running my hosted engine.  That should rule out external
>> network (e.g. switch and such) issues, as those packets should not have
>> left the physical box.
>
> well, hosted engine complicates things as you'd need to be able to see the status of the engine guest
> running a standalone engine installation or at least running that hosted engine on a single node without any other VM may help….
>
> Thanks,
> michal
>
>>
>> --
>> Chris Adams <cma at cmadams.net>
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>
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