Puma / missing logs

Question

Why I don't see any Rails specific entries in the logs ?

I'm using Puma 2.7.1 with Nginx proxy, on a normal Debian box, nothing fancy, ruby 1.9.3 via RVM.

My puma config:

#!/usr/bin/env puma
environment 'sandbox'
bind 'unix://tmp/puma.sock'
stdout_redirect 'log/puma.log', 'log/puma_error.log', true
pidfile 'tmp/pids/puma.pid'
state_path 'tmp/pids/puma.state'
daemonize true 
workers 4

I start puma via:

bundle exec puma -C config/puma/config.rb

I see:

[23664] Puma starting in cluster mode...
[23664] * Version 2.7.1, codename: Earl of Sandwich Partition
[23664] * Min threads: 0, max threads: 16
[23664] * Environment: sandbox
[23664] * Process workers: 4
[23664] * Phased restart available
[23664] * Listening on unix://tmp/puma.sock
[23664] * Daemonizing...

I run:

tail -f log/puma*

I see:

==> log/puma_error.log <==
X-Accel-Mapping header missing
=== puma startup: 2014-02-13 14:08:52 +0100 ===
[deprecated] I18n.enforce_available_locales will default to true in the future. If you really want to skip validation of your locale you can set I18n.enforce_available_locales = false to avoid this message.

==> log/puma.log <==
=== puma startup: 2014-02-13 14:08:52 +0100 ===
[23670] - Worker 23678 booted, phase: 0
[23670] - Worker 23674 booted, phase: 0
[23670] - Worker 23686 booted, phase: 0
[23670] - Worker 23682 booted, phase: 0

But I don't see any more logs, nothing application related.

When the application raises an exception, I get nothing in the logs... "tabula rasa"

Solution

Rails has a seperate log file and doesn't log to the puma log. By default, Rails logs to a file in logs/<environment>.log, e.g. log/production.log