1Appender::RRDs(3)     User Contributed Perl Documentation    Appender::RRDs(3)
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NAME

6       Log::Log4perl::Appender::RRDs - Log to a RRDtool Archive
7

SYNOPSIS

9           use Log::Log4perl qw(get_logger);
10           use RRDs;
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12           my $DB = "myrrddb.dat";
13
14           RRDs::create(
15             $DB, "--step=1",
16             "DS:myvalue:GAUGE:2:U:U",
17             "RRA:MAX:0.5:1:120");
18
19           print time(), "\n";
20
21           Log::Log4perl->init(\qq{
22             log4perl.category = INFO, RRDapp
23             log4perl.appender.RRDapp = Log::Log4perl::Appender::RRDs
24             log4perl.appender.RRDapp.dbname = $DB
25             log4perl.appender.RRDapp.layout = Log::Log4perl::Layout::PatternLayout
26             log4perl.appender.RRDapp.layout.ConversionPattern = N:%m
27           });
28
29           my $logger = get_logger();
30
31           for(10, 15, 20, 25) {
32               $logger->info($_);
33               sleep 1;
34           }
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DESCRIPTION

37       "Log::Log4perl::Appender::RRDs" appenders facilitate writing data to
38       RRDtool round-robin archives via Log4perl. For documentation on RRD and
39       its Perl interface "RRDs" (which comes with the distribution), check
40       out <http://rrdtool.org>.
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42       Messages sent to Log4perl's RRDs appender are expected to be numerical
43       values (ints or floats), which then are used to run a "rrdtool update"
44       command on an existing round-robin database. The name of this database
45       needs to be set in the appender's "dbname" configuration parameter.
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47       If there's more parameters you wish to pass to the "update" method, use
48       the "rrdupd_params" configuration parameter:
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50           log4perl.appender.RRDapp.rrdupd_params = --template=in:out
51
52       To read out the round robin database later on, use "rrdtool fetch" or
53       "rrdtool graph" for graphic displays.
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56       Copyright 2002-2009 by Mike Schilli <m@perlmeister.com> and Kevin Goess
57       <cpan@goess.org>.
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59       This library is free software; you can redistribute it and/or modify it
60       under the same terms as Perl itself.
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64perl v5.12.2                      2010-08-31                 Appender::RRDs(3)
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