Log::Log4perl::Appender::RRDs 1.06

Log::Log4perl::Appender::RRDs is a 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;
}

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 Log4perls 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 appenders dbname configuration parameter.

If theres 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.