dhis2-devs team mailing list archive

[Bob Jolliffe <bobjolliffe@xxxxxxxxx>]

Lars this seems like a good development to me.  I presume we will
still be able to override with an external log4j config.  Sometimes
its more convenient to rotate by time (eg month) than by size.

I presume all the exception dumps (ie not "real" logs) are going to
end up in catalina which is fine.  We can work on catching them piece
by piece.

On 7 June 2015 at 12:33, Lars Helge Øverland <larshelge@xxxxxxxxx> wrote:
> Hi there,
>
> the way application logging (e.g. tomcat logging) in DHIS 2 worked up to now
> has not been ideal. Basically all log output has been sent to std out. For
> the tomcat container this means all logging has ended up in catalina.out
> under tomcat install dir > logs.
>
> This is not great since there is no simple way (beside using logrotate or
> other tools) to control the size of the log file or to specify custom
> locations for DHIS 2-related log content. This could cause a server to
> uncontrollably run out of disk space.
>
> In DHIS 2.19 this has changed so that DHIS 2-related log output is sent to
> the DHIS2_HOME location /logs (this is where you e.g. keep the
> hibernate.properties file, set by an env variable). The system also
> separates log output for the main background processes such as analytics
> table generation and import-export into separate files, so that you can
> easily look up errors/output for these without having to skim through lots
> of other content. So we now have 4 log files:
>
> <DHIS2_HOME>/logs/dhis.log
> <DHIS2_HOME>/logs/dhis-analytics-table.log
> <DHIS2_HOME>/logs/dhis-data-exchange.log
> <DHIS2_HOME>/logs/dhis-data-sync.log
>
> You can read more in the docs here:
>
> https://www.dhis2.org/doc/snapshot/en/implementer/html/ch08s07.html
>
> The system currently still logs to std out, as we wanted to introduce this
> gradually and not cause confusion.
>
> In 2.20 we plan to stop logging to std out (catalina.out) completely, and
> only use the log files under DHIS2_HOME.
>
> I am interested to hear if people are comfortable with this and if it sounds
> like a good solution.
>
>
> regards,
>
> Lars
>
>
>
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