Java – logback roll only for file size

2020-08-21 • Java

I'm using logback 1.0 13. I want my log files to scroll completely based on file size If it takes two hours or two years, I don't care I can't figure out how to do this My appender configuration is as follows:

<appender name="serverFaultFile"
    class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>/folder/to/log/file.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
        <fileNamePattern>/folder/to/log/file-%d{yyyy-MM}.%i.log</fileNamePattern>
        <MaxHistory>2</MaxHistory>
        <cleanHistoryOnStart>true</cleanHistoryOnStart>
        <timeBasedFileNamingAndTriggeringPolicy
            class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
            <maxFileSize>10MB</maxFileSize>
            <MaxHistory>9</MaxHistory>
        </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>
    <encoder>
        <pattern>[%p] [%d{ISO8601}] [%c] [%m]%n</pattern>
    </encoder>
</appender>

This solution rolls every month, which is not what I need I tried to completely delete the –% d {dateformat} modifier, but then I didn't even create / record the file I tried the modifiers% G and% yyyy, but the monthly is so fine because logback obviously allows me to get it (see this bug report) What did I miss?

Solution

You want a sizebasedtriggingpolicy: http://logback.qos.ch/manual/appenders.html#SizeBasedTriggeringPolicy , may be used in combination with fixedwindowrollingpolicy

It used to be a comment, not sure it should get its own answer, but here

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