graph.cgi - exporting remstats graphs

The purpose of graph.cgi is to allow remstats graphs to appear on external (not part of remstats) web-pages. It's not efficient, with the graphs being generated whenever the page is reloaded, but it is portable. All you do is to create an <IMG SRC...> tag with the appropriate values, like:

	<IMG SRC="/remstats/graph.cgi?host=aaa&rrd=bbb&graph=ccc&graphtime=ddd">

and replace aaa with the name of the host, as remstats knows it, bbb with the name of the RRD, ccc with the name of the graph within that RRD, and ddd with the name of the timespan, from the times config-file. If the RRD is a wildcard RRD, e.g. snmpif-*, then you must use the specific instance, e.g. snmpif-eth0.

The graphtime specifier may be replaced by start=xxx and end=yyy or omitted altogether. If start and end are specified, the permitted formats are documented in the manpage for rrdfetch. If you use the form:

	hh:mm dd.mm.yyy OFFSET

with OFFSET being a string composed of multiple ocurrences of plus or minus, a number and the units (s|min|h|d|mon|y). E.G. +2h+40min or -20d+5h

The graph's defined size may also be overridden using width=www and height=hhh. These specify the size, in pixels, of the graph portion of the image, not the whole image, as usual with rrdtool.

That's all there is to it.

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Last updated Sun Apr 3 12:05:19 UTC 2005 by <terskine@users.sourceforge.net>.