Appender::RRDs(3) User Contributed Perl Documentation Appender::RRDs(3)NAMELog::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.
COPYRIGHT AND LICENSE
Copyright 2002-2009 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.
perl v5.14.1 2011-05-02 Appender::RRDs(3)
