Configuring logging
Now let us learn how we can configure logging in Solr.
Solr Version older than 4.3 used the SLF4J Logging API, which was not flexible enough to support containers other than Jetty. Techies figured out this restriction and incorporated the solution in Solr 4.3 so as to improve flexibility in logging even with non-Jetty containers. To do so, they changed the default behavior and removed SLF4J jars from Solr's .war file which allows changing and upgrading the logging mechanism as and when required.
For further information on SLF4J logging API and Solr logging, you may refer to http://www.slf4j.organd http://wiki.apache.org/solr/SolrLogging respectively.
Solr provides flexibility to configure your logs either on a temporary or permanent basis based on your needs. So, let us discuss these two ways of configuring your logs one by one.
Temporary logging settings
Temporary logging settings are recommended only in the situations wherein you need a different setting on one-time basis...