jetty-util/src/main/config/etc/jetty-logging.xml

<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse.org/jetty/configure_9_3.dtd">

<!-- =============================================================== -->
<!-- Configure stderr and stdout to a Jetty rollover log file        -->
<!-- this configuration file should be used in combination with      -->
<!-- other configuration files.  e.g.                                -->
<!--    java -jar start.jar etc/jetty-logging.xml                    -->
<!-- =============================================================== -->
<Configure id="logging" class="org.eclipse.jetty.util.log.Log">

    <New id="ServerLog" class="java.io.PrintStream">
      <Arg>
        <New class="org.eclipse.jetty.util.RolloverFileOutputStream">
          <Arg><Property name="jetty.logging.dir" deprecated="jetty.logs" default="./logs"/>/yyyy_mm_dd.stderrout.log</Arg>
          <Arg type="boolean"><Property name="jetty.logging.append" default="false"/></Arg>
          <Arg type="int"><Property name="jetty.logging.retainDays" default="90"/></Arg>
          <Arg>
              <Call class="java.util.TimeZone" name="getTimeZone"><Arg><Property name="jetty.logging.timezone" default="GMT"/></Arg></Call>
          </Arg>
          <Get id="ServerLogName" name="datedFilename"/>
        </New>
      </Arg>
    </New>

    <Get name="rootLogger">
      <Call name="info"><Arg>Redirecting stderr/stdout to <Ref refid="ServerLogName"/></Arg></Call>
    </Get>
    <Call class="java.lang.System" name="setErr"><Arg><Ref refid="ServerLog"/></Arg></Call>
    <Call class="java.lang.System" name="setOut"><Arg><Ref refid="ServerLog"/></Arg></Call>

</Configure>