mina + puma + nginx

deploy.rb

require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'mina/rvm'    # for rvm support. (http://rvm.io)
require 'mina/puma'

# Basic settings:
#   domain       - The hostname to SSH to.
#   deploy_to    - Path to deploy into.
#   repository   - Git repo to clone from. (needed by mina/git)
#   branch       - Branch name to deploy. (needed by mina/git)

#set :domain, 'bots.codium.com.br'
set :domain, 'rails_app.net'
set :deploy_to, '/home/deployer/apps/rails_app'
set :repository, 'git@bitbucket.org:artz/rails_app.git'
set :branch, 'master'
set :rails_env, 'production'

set :user, 'deployer'
set :port, '6622'
set :ssh_options, '-A'

# For system-wide RVM install.
set :rvm_path, '/usr/local/rvm/scripts/rvm'

set :app_path, lambda { "#{deploy_to}/#{current_path}" }

# Manually create these paths in shared/ (eg: shared/config/database.yml) in your server.
# They will be linked in the 'deploy:link_shared_paths' step.
set :shared_paths, ['config/database.yml', 'config/secrets.yml', 'log', 'public/system']

# Optional settings:
#   set :user, 'foobar'    # Username in the server to SSH to.
#   set :port, '30000'     # SSH port number.
set :forward_agent, true     # SSH forward_agent.
set :term_mode, nil

set :keep_releases, 3

# This task is the environment that is loaded for most commands, such as
# `mina deploy` or `mina rake`.
task :environment do
  # If you're using rbenv, use this to load the rbenv environment.
  # Be sure to commit your .ruby-version or .rbenv-version to your repository.
  # invoke :'rbenv:load'

  # For those using RVM, use this to load an RVM version@gemset.
  invoke :'rvm:use[ruby-2.2.1@rails4.2]'
end

# Put any custom mkdir's in here for when `mina setup` is ran.
# For Rails apps, we'll make some of the shared paths that are shared between
# all releases.
task :setup => :environment do
  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/log"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/log"]

  queue! %[mkdir -p "#{deploy_to}/#{shared_path}/config"]
  queue! %[chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/config"]

  queue! %[touch "#{deploy_to}/#{shared_path}/config/database.yml"]
  queue! %[touch "#{deploy_to}/#{shared_path}/config/secrets.yml"]
  queue  %[echo "-----> Be sure to edit '#{deploy_to}/#{shared_path}/config/database.yml' and 'secrets.yml'."]

  # Puma needs a place to store its pid file and socket file.
  queue! %(mkdir -p "#{deploy_to}/#{shared_path}/tmp/sockets")
  queue! %(chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/tmp/sockets")
  queue! %(mkdir -p "#{deploy_to}/#{shared_path}/tmp/pids")
  queue! %(chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/tmp/pids")

  queue! %(mkdir -p "#{deploy_to}/#{shared_path}/uploads")
  queue! %(chmod g+rx,u+rwx "#{deploy_to}/#{shared_path}/uploads")
end

desc "Load environment variables"
task :env do                                                                                                                                                                                                
  queue %{
    echo "-----> Loading environment"
    #{echo_cmd %[source ~/.bash_profile]}
  }
end

desc "Deploys the current version to the server."
task :deploy => :environment do
  to :before_hook do
    # Put things to run locally before ssh
  end
  invoke :env
  deploy do
    # Put things that will set up an empty directory into a fully set-up
    # instance of your project.
    invoke :'git:clone'
    invoke :'deploy:link_shared_paths'
    invoke :'bundle:install'
    invoke :'rails:db_migrate'
    invoke :'rails:assets_precompile'
    invoke :'deploy:cleanup'

    to :launch do
      queue "mkdir -p #{deploy_to}/#{current_path}/tmp/"
      queue "touch #{deploy_to}/#{current_path}/tmp/restart.txt"
      queue "echo #{pumactl_cmd}"
      queue! %[
            if [ -e '#{pumactl_socket}' ]; then
              PID=`cat #{deploy_to}/shared/tmp/sockets/puma.state |grep pid| sed "s/[^0-9]//g"`
              cd #{deploy_to}/#{current_path} && #{pumactl_cmd} -p $PID phased-restart
            else
              cd #{deploy_to}/#{current_path} && #{puma_cmd} -q -d -e #{puma_env} -b 'unix://#{puma_socket}' -S #{puma_state} --pidfile #{puma_pid} --control 'unix://#{pumactl_socket}' >> /tmp/prod.log
            fi

          ]
      queu "echo ---------> #{puma_cmd}"

      invoke :'cleanup'
    end
  end
end

task :down do
  invoke :restart
  invoke :logs
end

task :restart do
  queue 'sudo service nginx restart'
end

task :logs do
  queue 'tail -f /var/log/nginx/error.log'
end

task :admin_user do
  queue 'RAILS_ENV=production bundle exec rake casein:users:create_admin email=arthur@arthur password=senha'
end

# For help in making your deploy script, see the Mina documentation:
#
#  - http://nadarei.co/mina
#  - http://nadarei.co/mina/tasks
#  - http://nadarei.co/mina/settings
#  - http://nadarei.co/mina/helpers

desc "Clean up old releases."
  task :cleanup do
    queue %{
      echo "-----> Cleaning up old releases (keeping #{keep_releases!})"
      #{echo_cmd %{cd "#{deploy_to!}/#{releases_path!}" || exit 15}}
      #{echo_cmd %{count=`ls -1d [0-9]* | sort -rn | wc -l`}}
      #{echo_cmd %{remove=$((count > #{keep_releases} ? count - #{keep_releases} : 0))}}
      #{echo_cmd %{ls -1d [0-9]* | sort -rn | tail -n $remove | xargs rm -rf {}}}
    }
  end

nginx.conf

server {
  #listen *:80 | *:8000;
  listen 80;
  server_name www.rails_app.net;
  return 301 $scheme://rails_app$request_uri;
}

upstream emetropolis {
  server unix:///home/deployer/apps/rails_app/shared/tmp/sockets/puma.sock;
}
 
server {
  listen 80;
  server_name rails_app.net;
 
  keepalive_timeout 5;
 
  root /home/deployer/apps/rails_app/current/public;
  access_log /home/deployer/apps/rails_app/current/log/production.access.log;
  error_log /home/deployer/apps/rails_app/current/log/production.error.log info;
 
  client_max_body_size 50M;
  if (-f $document_root/maintenance.html) {
    rewrite  ^(.*)$  /maintenance.html last;
    break;
  }

  location / {
    proxy_pass http://rails_app;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  } 

  location ~ ^/(assets)/  {
    root /home/deployer/apps/rails_app/current/public;
    gzip_static on;
    expires max;
    add_header Cache-Control public;
    # access_log /dev/null;
  }
 
  location ~* \.(pdf|ico|css|gif|jpe?g|png|js|doc|docx)(\?[0-9]+)?$ {
     expires max;
     break;
  }
 
  location ~ ^/javascripts/.*\.js(\?[0-9]+)?$ {
     expires max;
     break;
  }

  location ~* ^/assets|fonts/ {
    expires max;
    add_header Cache-Control public;
    add_header ETag "";
    break;
  }
 
  # Error pages
  # error_page 500 502 503 504 /500.html;
  location = /500.html {
    root /rails_app/current/public;
  }
}

puma.rb

#!/usr/bin/env puma
directory '/home/deployer/apps/emetropolis.net/current'
daemonize true
threads 0, 3
stdout_redirect 'log/puma.stdout.log', 'log/puma.stderr.log', true