[logback-user] Problem with Logging in Linux

[Abraham Lin]

The "lib" folder is generally not on the classpath; however, JARs within
the folder are. If you know that other libraries are being successfully
loaded from the "lib" folder, then one thing to try is to create a minimal
JAR containing just logback.xml. The other option would be to just package
logback.xml with the rest of your application code (which is what Maven
does with items under src/main/resources by default).

-Abraham


On Mon, Aug 27, 2012 at 11:07 AM, Oliver Zemann <oliver.zemann at gmail.com>wrote:

> How to reproduce:
>
> Create a new Java Application in Netbeans with following content:
>
> package com.logbackanttest;
>
> import ch.qos.logback.classic.LoggerContext;
> import ch.qos.logback.core.util.StatusPrinter;
> import org.slf4j.Logger;
> import org.slf4j.LoggerFactory;
>
> public class LogbackAntTest {
> private static final Logger LOG =
> LoggerFactory.getLogger(LogbackAntTest.class);
>     /**
>      * @param args the command line arguments
>      */
>     public static void main(String[] args) {
>         LOG.trace("TRACING");
>         LOG.error("ERROR");
>         LoggerContext lc = (LoggerContext)
> LoggerFactory.getILoggerFactory();
>     // print logback's internal status
>     StatusPrinter.print(lc);
>
>     }
> }
>
> Now try to get it working ;)
>
> I really tried alot, but it makes no difference where i copy the
> logback.xml into. I tried it with the dist/ folder, with the lib
> folder (which must be in the classpath, otherwise the application
> would not start at all).
> I have absolutly no idea whats going on - i guess with maven it just
> copies the logback.xml into the jar and uses that (i created a
> jar-with-dependencies).
>
>
>
> 2012/8/27 Oliver Zemann <oliver.zemann at gmail.com>:
> > I was able to easily get it working with maven when i copied the file
> > into my resources folder, but it is not working with ant. Somehow it
> > is not found, in that case all debugging options in the xml makes no
> > sense as this is just not found.
> >
> > I tested it with StatusPrinter and printing the LoggerContext:
> >
> > run:
> > 12:58:06.590 [main] ERROR com.logbackanttest.LogbackAntTest - ERROR
> > 12:58:06,545 |-INFO in ch.qos.logback.classic.LoggerContext[default] -
> > Could NOT find resource [logback.groovy]
> > 12:58:06,545 |-INFO in ch.qos.logback.classic.LoggerContext[default] -
> > Could NOT find resource [logback-test.xml]
> > 12:58:06,545 |-INFO in ch.qos.logback.classic.LoggerContext[default] -
> > Could NOT find resource [logback.xml]
> > 12:58:06,546 |-INFO in ch.qos.logback.classic.LoggerContext[default] -
> > Setting up default configuration.
> >
> > I am currently in the project root directory, where a logback.xml is
> > located. Also the dist folder (created by netbeans) contains a
> > logback.xml and inside this dist folder the folder lib is created
> > (containing the 3 jars, logback common, classic and slf4j) where also
> > a logback.xml is located.
> >
> > 2012/8/27 Oliver Zemann <oliver.zemann at gmail.com>:
> >> The problem is that the software is running productive on customer
> >> side, so there is no way to just deinstall the application and
> >> reinstall it...
> >>
> >> * What version of logback and slf4j are you using?
> >> logback 1.0.6 (classic and core), slf4j-api 1.6.5
> >>
> >> * Which flavor (and version) of Linux are you running?
> >> CentOS 5.8 and 6.3
> >>
> >> * Does the same problem occur when you try your logback config in a
> simple
> >>  HelloWorld app (outside of install4j)?
> >> Just tried it with creating a standalone jar from maven
> >> (jar-with-dependencies) and its working as expected but its embedded
> >> now. will check this in a few moments.
> >>
> >> Regards,
> >> Oli
> >>
> >> 2012/8/27 Thorbjørn Ravn Andersen <thunderaxiom at hotmail.com>:
> >>> Have you enabled automatic printing of status messages in case of
> warming or
> >>> errors?
> >>>
> >>>
> >>>
> >>> (see
> >>>
> http://logback.qos.ch/manual/configuration.html#automaticStatusPrinting)
> >>>
> >>>
> >>>
> >>> It will go to your console.
> >>>
> >>>
> >>>
> >>> From: logback-user-bounces at qos.ch [mailto:logback-user-bounces at qos.ch]
> On
> >>> Behalf Of Tony Trinh
> >>> Sent: 25. august 2012 23:57
> >>> To: logback users list
> >>> Subject: Re: [logback-user] Problem with Logging in Linux
> >>>
> >>>
> >>>
> >>> On Fri, Aug 24, 2012 at 6:52 AM, Oliver Zemann <
> oliver.zemann at gmail.com>
> >>> wrote:
> >>>
> >>> Hi, i have the absolut identical file for Windows which works as
> >>> expected (logging), but not for linux:
> >>>
> >>> http://rifers.org/paste/show/1801
> >>>
> >>> There is just no logging - i started everything as root. Even when i
> >>> use the FileAppender with its file name property set to "somelog.log"
> >>> or "/root/somelog.log" it just saves nothing and i have no idea why.
> >>>
> >>> I used updatedb && locate to find a file called like this but there
> >>> was nothing. Also lsof with a grep find nothing opened. So it is
> >>> really not logging.
> >>>
> >>> Regards,
> >>> Oli
> >>>
> >>>
> >>>
> >>> Your config for the RollingFileAppender is missing the <file> element.
> The
> >>> manual contains a good example of all the necessary elements [1].
> logback
> >>> should print a warning in the debug output for this.
> >>>
> >>>
> >>>
> >>> It would be helpful if you provided additional details to reproduce the
> >>> problem:
> >>>
> >>>
> >>>
> >>>  * What version of logback and slf4j are you using?
> >>>
> >>>  * Which flavor (and version) of Linux are you running?
> >>>
> >>>  * Does the same problem occur when you try your logback config in a
> simple
> >>> HelloWorld app (outside of install4j)?
> >>>
> >>>
> >>>
> >>> FYI, your logback config works (writes to a file) for me in Android.
> >>>
> >>>
> >>>
> >>> It looks like Install4j supports a console [2], when running  the
> installer
> >>> with "-c". It might be worth seeing if logback's debug-output prints
> in that
> >>> console.
> >>>
> >>>
> >>>
> >>> [1]:
> http://logback.qos.ch/manual/appenders.html#logback-RollingTimeBased
> >>>
> >>> [2]: http://www.ej-technologies.com/products/install4j/whatsnew4.html
> >>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Logback-user mailing list
> >>> Logback-user at qos.ch
> >>> http://mailman.qos.ch/mailman/listinfo/logback-user
> _______________________________________________
> Logback-user mailing list
> Logback-user at qos.ch
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