Configure LEVEL for solr logging screen

Question

Where can I configure the LEVEL for the solr logging screen?

http://localhost:8983/solr/#/~logging

By default the LEVEL seems to be WARN.

Is there a special appender or a special file?

I know that I can configure the LEVEL for the loggers.

http://localhost:8983/solr/#/~logging/level

But there is no option for the logging screen.

Unfortunatly the solr documentation does'nt help here: https://cwiki.apache.org/confluence/display/solr/Configuring+Logging

Answer 1

The logging of the admin logging screen can be configured in the solr.xml (Not to be confused with solrconfig.xml), if you are using the new style solr.xml:

<solr>
  <logging>
    <str name="enabled">true</str>
    <watcher>
      <int name="size">50</int>
      <int name="threshold">INFO</int>
    </watcher>
  </logging>
...
</solr>

http://wiki.apache.org/solr/Solr.xml%204.4%20and%20beyond