Hello Paolo,

Testing MySQL was my next step, but I'll need to learn how to set it
up first. So I'll do my homeworks and I'll keep you posted.

Thanks,

JF


On Mon, Nov 9, 2009 at 12:38 PM, Paolo Lucente <pa...@pmacct.net> wrote:
> Hi JF,
>
> On Mon, Nov 09, 2009 at 10:26:35AM -0500, JF Cliche wrote:
>
>> In any case, I cleaned- up my config file and made sure I filter
>> nothing (see config below). I rechecked pmacctd using the memory
>> plugin and data is being gathered. Then I relaunched with the sqlite3
>> plugin. 'pmacct -s' still generate an error: the pipe file is not
>> created. And a large number of sqlite3 writer processes are created.
>
> The "pmacct" client tool is only useful to interact with the memory
> plugin; when you are using only the sqlite3 plugin, it tries to see
> if a memory plugin is listening on the pipe file - but nothing is
> there and hence it triggers the error. I would say this is all OK.
>
>> ...
>> ( in/sqlite3 ) *** Purging cache - START ***
>> ( in/sqlite3 ) *** Purging cache - END (QN: 0, ET: 0) ***
>> WARN ( in/sqlite3 ): Maximum number of SQL writer processes reached (10).
>> ( in/sqlite3 ) *** Purging cache - START ***
>> ( in/sqlite3 ) *** Purging cache - END (QN: 0, ET: 0) ***
>> ...
>
> Now, this part is interesting. As you said, writer processes seem to
> not be replenished - while they should be shortly after each "END"
> debug message you see above; and also it seems the writer process is
> unable to dump the SQL cache content into the database (as the query
> number, "QN", stays at zero while you produce some traffic; moreover
> such traffic is reaching the sqlite3 plugin no problems as you can get
> the buffering error "ERROR ( in/sqlite3 ): We are missing data" from
> the plugin).
>
> To rule out some configuration issue, i've copy/pasted your config
> on a testbed - and i see it working fine. This and the fact that the
> memory plugin works fine (it has a different way of working compared
> the SQL plugins) suggests me the issue could be at a lower level.
>
> I can propose some solutions: 1) allow me to troubleshoot the issue;
> this would require an access to the NAS (and feel free to bring this
> over privately); 2) if the above is not possible a clean alternative
> might be let pmacct to write to a remote SQL database, either MySQL
> or PostgreSQL; it has to be checked you don't run in the same SQLite
> issue first; 3) check whether what you want to achieve, can be done
> with the memory plugin.
>
> Cheers,
> Paolo
>
>



-- 
------------------------------------------------
Jean-François Cliche, Ph.D., P. Eng

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