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About

Erlang-rrdtool is a simple module to allow rrdtool to be treated like an erlang port via its 'remote control' mode (rrdtool -).

You should probably use https://github.com/archaelus/errd instead.

Usage

Creating a rrd (example #1 from the rrdcreate manpage):

1> {ok, Pid} = rrdtool:start().
{ok,<0.221.0>}
2> rrdtool:create(Pid, "temperature.rrd", [{"temp", 'GAUGE', [600, -273, 5000]}],
    [{'AVERAGE', 0.5, 1, 1200}, {'MIN', 0.5, 12, 2400}, {'MAX', 0.5, 12, 2400},
    {'AVERAGE', 0.5, 12, 2400}]).
ok

Updating a RRD:

3> rrdtool:update(Pid, "temperature.rrd", [{"temp", 50}]).
ok
4> rrdtool:update(Pid, "temperature.rrd", [{"temp", 75}], now()).
ok

Rebar

To use rrdtool in your projects, add a dependency to your rebar.config:

{deps, [{rrdtool, ".*",
         {git, "git:https://github.com/Vagabond/erlang-rrdtool.git"", "master"}}]}.