Puma - show full logs when run server with config file

Question

I installed puma gem and when I start rails server by rails s I can see full output:

$ rails s 
/Users/serj/.rvm/gems/ruby-2.2.1@email_         


        

Answer 1

If you use foreman or a Procfile, you can add the tail -f log to your Procfile. This is what I use:

# Procfile.dev
web: bundle exec puma -p $PORT
webpack: bin/webpack-dev-server
log: tail -f log/development.log

I then start rails like this:

$> PORT=3000 foreman start -f Procfile.dev

I actually have an alias for this in my .zshrc:

alias railss='PORT=3000 foreman start -f Procfile.dev'

So I can simply start Rails with:

$> railss

Answer 2

The logs are in log/<rails env>.log. So you could (in a separate tab / window) run:

tail -f log/development.log

And you'll see all your output. If you want the output from rails merged into the puma logs, you could always have rails log to STDOUT:

config.logger = Logger.new(STDOUT)

Answer 3

If it's the logs you're interested in, then you can tail the actual log file. It'd go something like this tail -f log/development.log.

Answer 4

I've found this command in the Puma github readme:

$rails s Puma

Which also results in the desired behavior.

Edit: In fact, as described here after installing Puma, it should automatically be picked up by rails s command without the Puma argument.