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From "Tungathurthi, Chandra Kiran Bharadwaj" <chandra.tungathur...@rwth-aachen.de>
Subject Re: confused by log4j2 Rolling File Appender
Date Fri, 28 Oct 2016 03:13:35 GMT
Baron, the issue seemed to be in the filepattern. Usually, this is used for archiving while
rolling. 

from [https://logging.apache.org/log4j/2.x/manual/appenders.html#RollingFileAppender]: 

filePattern:	The pattern of the file name of the archived log file. The format of the pattern
is dependent on the RolloverPolicy that is used. The DefaultRolloverPolicy will accept both
a date/time pattern compatible with SimpleDateFormat and/or a %i which represents an integer
counter. The pattern also supports interpolation at runtime so any of the Lookups (such as
the DateLookup) can be included in the pattern.


>>discard or overwrite any previous log that may have been rolled the same day.
You need use the file index %i to roll onto a different file else the same file will be overwritten.
  

try this : path/to/cas/logs/cas.log_%d{MM-dd-yyyy}-%i.log.gz


----
Thanks & regards,
Chandra Tungathurthi


________________________________________
From: Baron Fujimoto <baron@hawaii.edu>
Sent: Friday, October 28, 2016 04:37
To: log4j-user@logging.apache.org
Subject: confused by log4j2 Rolling File Appender

I'm trying to configure I'm trying to configure an application (Apereo's CAS 5)
to roll its log files daily. This is an excerpt from its log4j2.xml config file
based on the the log4j2 documentation here

<https://logging.apache.org/log4j/2.x/manual/appenders.html#RollingFileAppender>

    <RollingFile name="file" fileName="/path/to/cas/logs/cas.log" append="true"
                 filePattern="/path/to/cas/logs/cas.log.%d{yyyy-MM-dd}">
        <PatternLayout pattern="%d %p [%c] - &lt;%m&gt;%n"/>
        <Policies>
            <OnStartupTriggeringPolicy />
            <SizeBasedTriggeringPolicy />
            <TimeBasedTriggeringPolicy interval="1" modulate="true" />
        </Policies>
    </RollingFile>

But when CAS starts up, I see the following:

2016-10-27 17:32:02,461 localhost-startStop-1 ERROR Unable to move file /path/to/cas/logs/cas.log.2016-10-27
to /path/to/cas/logs/cas.log.2016-10-27: java.nio.file.NoSuchFile Exception /path/to/cas/logs/cas.log.2016-10-27
-> /path/to/cas/logs/cas.log.2016-10-27
2016-10-27 17:32:02,464 localhost-startStop-1 ERROR Unable to copy file /path/to/cas/logs/cas.log.2016-10-27
to /path/to/cas/logs/cas.log.2016-10-27: java.nio.file.NoSuchFile Exception /path/to/cas/logs/cas.log.2016-10-27

I don't understand

1) why it's trying to move (and copy?) cas.log.2016-10-10 to
cas.log.2016-10-10

2) why the NoSuchFileException when
$ ls -go /path/to/cas/logs/cas.log.2016-10-10
-rw-r--r--. 1 641647 Oct 27 17:32 /path/to/cas/logs/cas.log.2016-10-27

If I don't touch things, it seems to mostly roll the logs daily, but if
I stop and restart the Tomcat container for the app, it appears to roll
the logfile on restart, and discard or overwrite any previous log that
may have been rolled the same day.

Any ideas as to what I'm doing wrong or suggestions onhow to fix this
would be appreciated.

Aloha,
-baron
--
Baron Fujimoto <baron@hawaii.edu> :: UH Information Technology Services
minutas cantorum, minutas balorum, minutas carboratum desendus pantorum

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