EDIT

<!-- 

This is the default logging configuration file for the cdm-sever 

which  also serves as template for the test logging configuration.

The STDOUT should be disabled!!!!

Logback provides a system property variable (see ch.qos.logback.classic.util.ContextInitializer#CONFIG_FILE_PROPERTY) 

by which custom configuration files can be specified for production and test environments:

-Dlogback.configurationFile=file:/app/logback.xml

 -->

<configuration>

  <!-- address performance concern with jul-to-slf4j -->

  <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">

    <resetJUL>true</resetJUL>

  </contextListener>

  <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />

  <property name="LOG_FOLDER" value="${cdm.logDir}:-${user.home}/.cdmLibrary/log}" />

  <property name="ROLL_DAY" value="%d{yyyy-MM-dd}" />

  <property name="ROLL_MINUTE" value="%d{yyyy-MM-dd-mm}" />

  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

    <append>true</append>

    <file>${LOG_FOLDER}/cdm-server.log</file>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

      <!-- daily rollover -->

      <fileNamePattern>${LOG_FOLDER}/cdm-server.${ROLL_DAY}.log.gz</fileNamePattern>

      <!-- keep 30 days' worth of history capped at 3GB total size -->

      <maxHistory>30</maxHistory>

      <totalSizeCap>3GB</totalSizeCap>

    </rollingPolicy>

    <encoder>

      <pattern>%d{HH:mm:ss.SSS} [%X{cdmInstance}] [%thread] %-5level %logger{36} - %msg%n</pattern>

    </encoder>

  </appender>

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">

    <layout>

      <pattern>%d{HH:mm:ss.SSS} [%X{cdmInstance}] [%thread] %-5level %logger{36} - %msg%n</pattern>

    </layout>

  </appender>

  <logger name="eu.etaxonomy.cdm.server" level="INFO" />

  <logger name="eu.etaxonomy.cdm" level="INFO" />

  <!-- avoid vast amount of "getCitation not yet implemented" & "getProblems not yet implemented" messages -->

  <logger name="eu.etaxonomy.cdm.model.name.TaxonNameBase" level="ERROR" />

  <logger name="eu.etaxonomy.cdm.persistence.dao.initializer" level="ERROR" />

  <logger name="eu.etaxonomy.cdm.cache.CdmTransientEntityCacher" level="WARN" />

  <logger name="eu.etaxonomy.cdm.remote.controller.interceptor" level="WARN" />

  <!-- prevent CdmExceptionResolver from logging errors -->

  <logger name="eu.etaxonomy.cdm.persistence.dao.initializer" level="ERROR" />

  <!-- json-lib -->

  <logger name="net.sf.json.JSONObject" level="ERROR" />

  <!-- Hibernate -->

  <logger name="org.hibernate" level="WARN" />

  <logger name="org.hibernate.search" level="ERROR" />

  <logger name="org.hibernate.engine.StatefulPersistenceContext.ProxyWarnLog" level="ERROR" />

  <!--      > supress HHH90000003 -->

  <logger name="org.hibernate.orm.deprecation" level="ERROR" />

  <!--  connection pool -->

  <logger name="com.mchange.v2.c3p0" level="WARN" />

  <!-- suppress nasty ehcache OutOfMemory warnings -->

  <logger name="net.sf.ehcache.config.CacheConfiguration" level="WARN" />

  <logger name="org.eclipse.jetty" level="INFO" />

  <root level="WARN">

    <appender-ref ref="FILE" />

<!--     <appender-ref ref="STDOUT" /> -->

  </root>

</configuration>