Folsomite

Folsom is an Erlang based metrics system inspired by Coda Hale's metrics (https://github.com/codahale/metrics/).

Graphite is a realtime graphing system.

Riemann is a monitoring system suitable for distributed systems.

Folsomite runs in your Erlang virtual machine, periodically aggregates all present Folsom metrics and forwards them to your Graphite and Riemann services.

Forwarding to Riemann uses the zeta library from reifyhealth on github.

The canonical location for the source code is on github. The software is copyrighted 2012 Campanja AB and distributed under the Apache License, Version 2.0.

Comments and patches always welcome!

Building and running

Any version of erlang suitable to run Folsom should be supported. Use rebar to build like:

./rebar get-deps compile

You can start it from the shell:

$ erl -pa ebin deps/*/ebin -s folsomite

Example config

%% -*-erlang-*-
{application, my_app,
 [{description, "my_app"},
  {vsn, git},
  {registered, []},
  {applications, [kernel,
                  stdlib,
                  folsomite]},
  {mod, []},
  {env,
   [{folsom, [{counter, [{my_app, my_counter}, {my_app, my_counter2}]},
              {gauge, [my_gauge]},
              {histogram, [{my_app, my_histo}, slide_uniform, {60, 1028}]}
             ]}
    {folsomite,
     [{graphite_host, "graphite.example.com"}]},
    {zeta,
     [{clients,
       [{default,
         {"riemann.example.com", 5555, {keepalive, 180000}}}]}]}
   ]}
 ]}.

(the histogram example above needs boundary/folsom#31).