Swiss Original. Mirrors: UK

rrdpython

SYNOPSIS

 import rrdtool
 rrdtool.create('/tmp/test.rrd', 'DS:foo:GAUGE:20:0:U')

DESCRIPTION

The rrdtool functions are directly callable via the Python programming language. This wrapper implementation has been written from the scratch (without SWIG)

The API's expects strings and/or list of strings as parameters to the functions. Please refer to the other rrdtool documentation for functions and valid arguments.

EXAMPLES

Example 1

 import sys
 sys.path.append('/path/to/rrdtool/lib/python2.6/site-packages/')
 import rrdtool, tempfile

 DAY = 86400
 YEAR = 365 * DAY
 fd,path = tempfile.mkstemp('.png')

 rrdtool.graph(path,
              '--imgformat', 'PNG',
              '--width', '540',
              '--height', '100',
              '--start', "-%i" % YEAR,
              '--end', "-1",
              '--vertical-label', 'Downloads/Day',
              '--title', 'Annual downloads',
              '--lower-limit', '0',
              'DEF:downloads=downloads.rrd:downloads:AVERAGE',
              'AREA:downloads#990033:Downloads')

 info = rrdtool.info('downloads.rrd')
 print info['last_update']
 print info['ds[downloads].minimal_heartbeat']

Example 2

 import sys
 sys.path.append('/path/to/rrdtool/lib/python2.6/site-packages/')
 import rrdtool

 # in real life data_sources would be populated in loop or something similar
 data_sources=[ 'DS:speed1:COUNTER:600:U:U',
                'DS:speed2:COUNTER:600:U:U',
                'DS:speed3:COUNTER:600:U:U' ]

 rrdtool.create( 'speed.rrd',
                 '--start', '920804400',
                 data_sources,
                 'RRA:AVERAGE:0.5:1:24',
                 'RRA:AVERAGE:0.5:6:10' )

If you use the site-python-install make target you can drop to first sys.path.append line since the RRDtool module will be available everywhere.

If RRDtool runs into trouble, it will throw an exception which you might want to catch.

SEE ALSO

rrdcreate, rrdupdate, rrdgraph, rrddump, rrdfetch, rrdtune, rrdlast, rrdxport, rrdinfo

AUTHOR

Hye-Shik Chang <perky@i18n.org>

Alan Milligan <alan.milligan@last-bastion.net>


NOTE: The content of this website is accessible with any browser. The graphical design though relies completely on CSS2 styles. If you see this text, this means that your browser does not support CSS2. Consider upgrading to a standard conformant browser like Mozilla Firefox or Opera but also Apple's Safari or KDE's Konqueror for example. It may also be that you are looking at a mirror page which did not copy the CSS for this page. Or if some pictu res are missing, then the mirror may not have picked up the contents of the inc directory.