CODEWITHSUNDEEP
javalog4j2
KoenDG
KoenDG

Reputation: 105

log4j2 RollingFile only keeping 4 days

I tried setting up log4j to compress my log files and send them to a mount. I added a day/month/year to it in an attempt to get it in directories like that.

At first this appeared to be working.

Coming back a while later, it turns out only the most recent 4 days are present.

This is my config:

<Configuration>
    <Appenders>

        <Console name="STDOUT" target="SYSTEM_OUT">
            <PatternLayout>
                <Pattern>
                    %d{yyyy-MM-dd HH:mm:ss.SSS} %-5p (%t) %c{1.} %m%n
                </Pattern>
            </PatternLayout>
        </Console>

        <RollingFile
                name="RollingFile"
                fileName="$/home/myservice/myservice.log"
                filePattern="/mnt/logbackups/$${date:dd-MM-yyyy}/myservice-%d{dd-MM-yyyy}-%i.log.gz" >
            <PatternLayout>
                <Pattern>
                    %d{yyyy-MM-dd HH:mm:ss.SSS} %-5p (%t) %c{1.} %m%n
                </Pattern>
            </PatternLayout>
            <Policies>
                <OnStartupTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="32 MB"/>
            </Policies>
        </RollingFile>
</Configuration>

I tried looking for a cause in the documentation: https://logging.apache.org/log4j/2.x/manual/appenders.html

But I can't find anything. Then again it's a gigantic page, maybe I'm missing something.

Does anybody know why this is happening?

Upvotes: 0

Views: 536

Answers (2)

berse2212
berse2212

Reputation: 850

What you looking for is the "Default Rollover Strategy" specified under Rollover Policies. You can add one explicitly to adjust the default parameters.

Specify it like this inside the RollingFile:

<DefaultRolloverStrategy max="20"/>

Although I am confused because according to their documentation the default is 7:

max | integer | The maximum value of the counter. Once this values is reached older archives will be deleted on subsequent rollovers. The default value is 7

Upvotes: 1

queeg
queeg

Reputation: 9384

You defined the RollingFileAppender which will regularly write to a new logfile. You also defined the triggers when to write to a new file, but you did not set the Rollover Strategies.

  • You could use the DirectWrite Rollover Strategy with maxFiles not set (to a value greater than zero).

  • You could also try to configure the Log Archive Retention Policy/Delete on Rollover action. Set testMode=true to prevent any file from being deleted.

Examples are available on the huge page you mentioned.

Upvotes: 1

Related Questions