[sr-dev] Lost connection to MySQL Server - Frequent Occurrence?

[Brandon Armstead]

Daniel,

    Just confirming again - that I am still very very frequently seeing
these syslog events posted ---- I still am unable to locate any plausible
reason for such events occurring.

The crash that was happening was related to me moving a piece of code down
into the error block to see what the exact query was that it was failing on
(during query).  It seemed most queries were related to dialog - however
not all.  All queries were referencing the same database server (different
databases).

Any other ideas why this may be happening?  Or any suggestions on how I can
further track it down / isolate the matter?

Look forward to hearing back from you, thanks!

Sincerely,
Brandon Armstead

On Thu, Dec 8, 2011 at 10:51 PM, Daniel-Constantin Mierla <miconda at gmail.com
> wrote:

>  Hello,
>
> was it related to the item in the bug tracker (which I just closed due to
> PM on tracker from you)? What was the cause for it?
>
> Thanks,
> Daniel
>
>
> On 12/8/11 11:53 PM, Brandon Armstead wrote:
>
> Timo,
>
>     Let me also add
>
>  max_allowed_packet = 512M.
>
> On Thu, Dec 8, 2011 at 2:52 PM, Brandon Armstead <brandon at cryy.com> wrote:
>
>> Timo,
>>
>>      Thanks for this reference - I actually have been playing / tweaking
>> with various mentioned items in this reference earlier.
>>
>>  My current settings are as follows:
>>
>>  connect_timeout = 30
>> net_read_timeout = 180
>> net_write_timeout = 180
>>
>>  The issue still seems to be quite prevalent.  I will say that the
>> amount of aborted connects currently (41) is way lower than the actual
>> amount of syslog lost connection errors.
>>
>>  Sincerely,
>>  Brandon Armstead
>>
>> On Thu, Dec 8, 2011 at 2:48 PM, Timo Reimann <sr at foo-lounge.de> wrote:
>>
>>> Hey Brandon,
>>>
>>>
>>> Am 08.12.2011 um 20:32 schrieb Brandon Armstead:
>>>  >     I am very very very frequently seeing in logs "Lost connection
>>> to MySQL Server" --- the MySQL server that it is connecting to is less than
>>> 1 ms away (essentially sitting in the same rack).
>>> >
>>> > Dec  8 19:21:15  /usr/local/sbin/kamailio[4149]: INFO: dialog
>>> [dlg_db_handler.c:584]: trying to remove dialog [
>>> c9d5ed0-13c4-4ee10778-92e3eb21-a90244c at XXX.XXX.XXX.XXX], update_flag is
>>> 4
>>> > Dec  8 19:21:16  /usr/local/sbin/kamailio[4149]: ERROR: db_mysql
>>> [km_dbase.c:122]: driver error on query: Lost connection to MySQL server
>>> during query
>>> > Dec  8 19:21:16  /usr/local/sbin/kamailio[4149]: ERROR: <core>
>>> [db_query.c:242]: error while submitting query
>>> > Dec  8 19:21:16  /usr/local/sbin/kamailio[4149]: ERROR: dialog
>>> [dlg_db_handler.c:598]: failed to delete database information
>>> >
>>> > *** MOD PARAM CONFIG ***
>>> >
>>> > # database ping
>>> > modparam("db_mysql", "ping_interval", 150)
>>> > modparam("db_mysql", "auto_reconnect", 1)
>>> >
>>> > Any thoughts on what may be happening?  It seems the overall
>>> connection (network) between the two servers is great.
>>>
>>>  The MySQL documentation enumerates a number of reasons:
>>>
>>> http://dev.mysql.com/doc/refman/5.1/en/error-lost-connection.html
>>> (This is the URL to MySQL version 5.1 documentation.)
>>>
>>> You may want to check those for possible matchings.
>>>
>>>
>>> Cheers,
>>>
>>> --Timo
>>
>>
>>
>
>
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>
>
> --
> Daniel-Constantin Mierla -- http://www.asipto.comhttp://linkedin.com/in/miconda -- http://twitter.com/miconda
>
>
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