jetty-server/src/main/config/etc/jetty-requestlog.xml

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

<!-- =============================================================== -->
<!-- Configure the Jetty Request Log                                 -->
<!-- =============================================================== -->
<Configure id="Server" class="org.eclipse.jetty.server.Server">

  <!-- =========================================================== -->
  <!-- Configure Request Log for Server                            -->
  <!-- (Use RequestLogHandler for a context specific RequestLog    -->
  <!-- =========================================================== -->
  <Set name="RequestLog">
    <New id="RequestLog" class="org.eclipse.jetty.server.AsyncNCSARequestLog">
      <Set name="filename"><Property name="jetty.base" default="." />/<Property>
          <Name>jetty.requestlog.filePath</Name>
          <Deprecated>requestlog.filename</Deprecated>
          <Default><Property name="jetty.requestlog.dir" default="logs"/>/yyyy_mm_dd.request.log</Default>
        </Property>
      </Set>
      <Set name="filenameDateFormat"><Property name="jetty.requestlog.filenameDateFormat" deprecated="requestlog.filenameDateFormat" default="yyyy_MM_dd"/></Set>
      <Set name="retainDays"><Property name="jetty.requestlog.retainDays" deprecated="requestlog.retain" default="90"/></Set>
      <Set name="append"><Property name="jetty.requestlog.append" deprecated="requestlog.append" default="false"/></Set>
      <Set name="extended"><Property name="jetty.requestlog.extended" deprecated="requestlog.extended" default="false"/></Set>
      <Set name="logCookies"><Property name="jetty.requestlog.cookies" deprecated="requestlog.cookies" default="false"/></Set>
      <Set name="LogTimeZone"><Property name="jetty.requestlog.timezone" deprecated="requestlog.timezone" default="GMT"/></Set>
      <Set name="LogLatency"><Property name="jetty.requestlog.loglatency" default="false"/></Set>
    </New>
  </Set>
</Configure>