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_0.dtd">

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

  <!-- =========================================================== -->
  <!-- Configure Request Log -->
  <!-- =========================================================== -->
  <Ref refid="Handlers">
    <Call name="addHandler">
      <Arg>
        <New id="RequestLog" class="org.eclipse.jetty.server.handler.RequestLogHandler">
          <Set name="requestLog">
            <New id="RequestLogImpl" class="org.eclipse.jetty.server.AsyncNCSARequestLog">
              <Set name="filename"><Property name="jetty.base" default="." /><Property name="requestlog.filename" default="/logs/yyyy_mm_dd.request.log"/></Set>
              <Set name="filenameDateFormat"><Property name="requestlog.filenameDateFormat" default="yyyy_MM_dd"/></Set>
              <Set name="retainDays"><Property name="requestlog.retain" default="90"/></Set>
              <Set name="append"><Property name="requestlog.append" default="false"/></Set>
              <Set name="extended"><Property name="requestlog.extended" default="false"/></Set>
              <Set name="logCookies"><Property name="requestlog.cookies" default="false"/></Set>
              <Set name="LogTimeZone"><Property name="requestlog.timezone" default="GMT"/></Set>
            </New>
          </Set>
        </New>
      </Arg>
    </Call>
  </Ref>

</Configure>