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Quick tips for Elixir deployments

Just some quick notes around Elixir deployments, in no particular order…


In tutorials, where you see exrm, be sure to use Distillery. It’s taking over from exrm and the tutorials haven’t yet caught up.


If you see an error like the following:

[info] Application myapp exited: MyApp.start(:normal, []) returned an error: shutdown: failed to start child: MyApp.Endpoint
    ** (EXIT) shutdown: failed to start child: Phoenix.CodeReloader.Server

…try rerunning the release with both MIX_ENV and --env set to the same env. For example:

$ MIX_ENV=prod mix release --env=prod

Originally posted: Sep 20 2016