[Building Sakai] James configuration

[Thomas Amsler]

How do you know that the james webapp didn't bootstrap the component manager?
Best,
-- Thomas




On Tue, Mar 24, 2009 at 8:30 AM, Carl Hall <carl.hall at gatech.edu> wrote:
> Whenever we have problems with James, we restart just the james webapp
> (touch the web.xml) and everything seems to come back to life.  This
> has saved us from dropping sessions by restarting the entire instance.
>
> On Tue, Mar 24, 2009 at 11:07, Thomas Amsler <tpamsler at ucdavis.edu> wrote:
>> We have the exact same problem and spent some time figuring out the
>> source of this issue.
>>
>> We simulated various load and usage scenarios but were never able to
>> reproduce this issue. By reading up on the Apache James email
>> archives, it's highly recommended to upgrade to the latest version
>> which is v2.3.1 and Sakai is using v2.1.3.
>>
>> Our current solution is that one node is handling all the mail. That
>> node doesn't allow any user connections so that we can restart that
>> sakai instance as soon as our monitoring script detects the "Maximum
>> number of open connections ..." problem.
>>
>> We have some of this documented here:
>> https://confluence.ucdavis.edu/confluence/x/KYC3
>>
>> Best,
>> -- Thomas
>>
>>
>>
>>
>> On Tue, Mar 24, 2009 at 4:42 AM, Daniel Merino
>> <daniel.merino at unavarra.es> wrote:
>>> Hi all.
>>>
>>> We have problems with James. Sometimes the mailarchive stops working and it
>>> gives us the next error in the logs:
>>>
>>> 24/03/09 12:34:55 WARN  connections: Maximum number of open connections
>>> exceeded - refusing connection.  Current number of connections is 30
>>>
>>> In the file
>>> /home/sinfo/sakai_2-5-3/mailarchive/mailarchive-james/james/src/webapp/apps/james/SAR-INF/config.xml
>>> we have 30 connections allowed.
>>>
>>> <connections>
>>>       <idle-timeout>300000</idle-timeout>
>>>       <max-connections>30</max-connections>
>>>    </connections>
>>>
>>> We don't know if maybe this is a low value for the number of connections or
>>> if James doesn't free properly these connections.
>>>
>>> Could somebody tell me how can we configurate correctly this parameter?
>>> Thanks in advance.
>>> --
>>> Daniel Merino
>>> daniel.merino at unavarra.es
>>> Gestor de teleformación - Centro Superior de Innovación Educativa.
>>> Tfno: 948-168489 - Universidad Pública de Navarra.
>>> --
>>> Cualquier idiota puede decir la verdad, pero para mentir hace falta tener
>>> imaginación. (Perich)
>>>
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>