Logging with log4j Rolling file

For engineers
1

Hi,
I’m trying to configure logging for the scala stream collector docker image with log4j.
Here’s my log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn">
    <Properties>
        <Property name="basePath">/snowplow/logs</Property>
    </Properties>
    <Appenders>
        <RollingFile name="fileLogger" fileName="${basePath}/collector-info.log" filePattern="${basePath}/collector-info-%d{yyyy-MM-dd}.log">
            <PatternLayout>
                <pattern>[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n</pattern>
            </PatternLayout>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
            </Policies>
        </RollingFile>

        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout   pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n" />
        </Console>

        <File name="LOGFILE" fileName="${basePath}/Collector.log">
            <PatternLayout
                pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n" />
        </File>
    </Appenders>
    <Loggers>
        <Root level="debug" additivity="false">
            <AppenderRef ref="fileLogger" />
            <AppenderRef ref="LOGFILE" />
            <AppenderRef ref="console" />
        </Root>
    </Loggers>
</Configuration>

And I launch the container with the command

docker run --name stream-collector ...         
        snowplow/scala-stream-collector-kinesis:2.1.3 \
        -Dlog4j.configurationFile=/snowplow/config//log4j2.xml \
        -Dorg.slf4j.simpleLogger.dateTimeFormat=“dd/MM/yyyy” \
        -Dorg.slf4j.simpleLogger.showDateTime=true \
        -Dorg.slf4j.simpleLogger.defaultLogLevel=debug \
        -Dorg.slf4j.simpleLogger.levelInBrackets=true \
        --config /snowplow/config/config.hocon`

I get log messages in the console, but those are coming from the slf4j.simpleLogger instead of log4j.
Has anyone configured log4j?

2

Hi, did you ever work out how to configure log4j? I’m interested in enabling JSON logging if it’s possible.