Settings View Source Recon

Recon is a library to be dropped into any other Erlang project, to be used to assist DevOps people diagnose problems in production nodes.

The source code can be obtained from the github repo. A toy application to experiment with can be found at recon_demo.

installing

Installing

Add recon to your project by adding it as a dependency. With rebar3 this is done as:

{deps, [recon]}.

If you are using releases, make sure to add recon to this list of applications bundled in:

{relx, [
    {release, {myrel, "0.1.0"},
      [myapp,
       recon, % <-- here
       sasl]
    },
    ...
]}.

running-tests

Running tests

Call rebar3 check

using-it

Using it

Each module in the API describes how it should be used in a stand-alone manner. Insights about how to debug a production Erlang system, often relying on this library, can be found in the free online book Erlang in Anger.

The library also contains a few basic scripts that have proven useful in the past but may not be as much today in its script/ directory. These include ways to visualize application dependencies, and a few short scripts to extract high-level information from crashdumps.