NAME

       Log::Log4perl::Appender::RRDs - Log to a RRDtool Archive

SYNOPSIS

           use Log::Log4perl qw(get_logger);
           use RRDs;

           my $DB = "myrrddb.dat";

           RRDs::create(
             $DB, "--step=1",
             "DS:myvalue:GAUGE:2:U:U",
             "RRA:MAX:0.5:1:120");

           print time(), "\n";

           Log::Log4perl->init(\qq{
             log4perl.category = INFO, RRDapp
             log4perl.appender.RRDapp = Log::Log4perl::Appender::RRDs
             log4perl.appender.RRDapp.dbname = $DB
             log4perl.appender.RRDapp.layout = Log::Log4perl::Layout::PatternLayout
             log4perl.appender.RRDapp.layout.ConversionPattern = N:%m
           });

           my $logger = get_logger();

           for(10, 15, 20, 25) {
               $logger->info($_);
               sleep 1;
           }

DESCRIPTION

       "Log::Log4perl::Appender::RRDs" appenders facilitate writing data to RRDtool round-robin archives via
       Log4perl. For documentation on RRD and its Perl interface "RRDs" (which comes with the distribution),
       check out <http://rrdtool.org>.

       Messages sent to Log4perl's RRDs appender are expected to be numerical values (ints or floats), which
       then are used to run a "rrdtool update" command on an existing round-robin database. The name of this
       database needs to be set in the appender's "dbname" configuration parameter.

       If there's more parameters you wish to pass to the "update" method, use the "rrdupd_params" configuration
       parameter:

           log4perl.appender.RRDapp.rrdupd_params = --template=in:out

       To read out the round robin database later on, use "rrdtool fetch" or "rrdtool graph" for graphic
       displays.

LICENSE

       Copyright 2002-2013 by Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

AUTHOR

       Please contribute patches to the project on Github:

           http://github.com/mschilli/log4perl

       Send bug reports or requests for enhancements to the authors via our

       MAILING LIST (questions, bug reports, suggestions/patches): log4perl-devel@lists.sourceforge.net

       Authors (please contact them via the list above, not directly): Mike Schilli <m@perlmeister.com>, Kevin
       Goess <cpan@goess.org>

       Contributors (in alphabetical order): Ateeq Altaf, Cory Bennett, Jens Berthold, Jeremy Bopp, Hutton
       Davidson, Chris R. Donnelly, Matisse Enzer, Hugh Esco, Anthony Foiani, James FitzGibbon, Carl Franks,
       Dennis Gregorovic, Andy Grundman, Paul Harrington, Alexander Hartmaier  David Hull, Robert Jacobson,
       Jason Kohles, Jeff Macdonald, Markus Peter, Brett Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope,
       Lars Thegler, David Viner, Mac Yang.