Enable Apache Solr logs
The Apache Solr log files are not enabled by default after version 3.x. To enable the log files, uncomment the following section in the /opt/bitnami/solr/server/etc/jetty.xml file. Remember to restart the server for your changes to take effect.
<Ref id="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.NCSARequestLog">
<Set name="filename">
logs/request.yyyy_mm_dd.log
</Set>
<Set name="filenameDateFormat">yyyy_MM_dd</Set>
<Set name="retainDays">90</Set>
<Set name="append">true</Set>
<Set name="extended">false</Set>
<Set name="logCookies">false</Set>
<Set name="LogTimeZone">UTC</Set>
</New>
</Set>
</New>
</Arg>
</Call>
</Ref>