PUMA RoR¶

puma.rb:

puts "RAILS_ENV=#{ENV["RAILS_ENV"]}"
app_dir = File.expand_path("../..", __FILE__)
shared_dir = "#{app_dir}/tmp"
environment ENV.fetch("RAILS_ENV") {"production"}
threads_count = ENV.fetch("RAILS_MAX_THREADS") {4}
workers threads_count
threads threads_count, threads_count
preload_app!
daemonize false


if ENV["RAILS_ENV"] == "production"
  daemonize true
  bind "unix://#{shared_dir}/sockets/puma.sock"
  pidfile "#{shared_dir}/pids/puma.pid"
  state_path "#{shared_dir}/puma.state"
  #stdout_redirect "#{app_dir}/log/puma_stdout.log", "#{app_dir}/log/puma_stderr.log"
end

activate_control_app

on_worker_boot do |worker_index|
  ActiveSupport.on_load(:active_record) do
    ActiveRecord::Base.establish_connection
  end
end

plugin :tmp_restart

nginx:

upstream puma {
    server unix:///usr/local/www/app/tmp/sockets/puma.sock;
}

server {
    set $host_path /usr/local/www/app;
    root $host_path/public;
    
    location / {
        root $host_path/public;
        try_files $uri/index.html $uri.html $uri @ruby;
    }

    location @ruby {
        proxy_set_header Host $http_host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_redirect off;
        proxy_read_timeout 300;
        proxy_cache off;
        proxy_pass http://puma;
    }

}

init app:

#!/usr/bin/env bash

PATH=/bin:/usr/bin:/usr/local/bin:~/bin
export PATH
test -f /etc/profile.d/rvm.sh && source /etc/profile.d/rvm.sh

RAILS_ENV="production"
APP_ROOT="/usr/local/www/redmine"
APP_USER="git"
DAEMON_OPTS="-C $APP_ROOT/config/puma.rb"
PID_PATH="$APP_ROOT/tmp/pids"
WEB_SERVER_PID="$PID_PATH/puma.pid"
NAME="redmine"
DESC="Redmine service"
RAILS_MAX_THREADS=2

check_pid(){
    if [ -f $WEB_SERVER_PID ]; then
        PID=$(cat $WEB_SERVER_PID)
        STATUS=$(ps aux | grep $PID | grep -v grep | wc -l)
    else
        STATUS=0
        PID=0
    fi
}

execute() {
    su $APP_USER  -c "$1"
}

start() {
    cd $APP_ROOT
    check_pid
    if [ "$PID" -ne 0 -a "$STATUS" -ne 0 ]; then
        echo "Error! $DESC $NAME is currently running!"
        return 1
    else
        if [ $(whoami) = root ]; then
            execute "export RAILS_ENV=$RAILS_ENV && export RAILS_MAX_THREADS=$RAILS_MAX_THREADS && bundle exec puma $DAEMON_OPTS"      
            echo "$DESC started"
        fi
    fi
}

stop() {
    cd $APP_ROOT
    check_pid
    if [ "$PID" -ne 0 -a "$STATUS" -ne 0 ]; then
        ## Program is running, stop it.
        kill -QUIT $(cat $WEB_SERVER_PID)

        rm "$WEB_SERVER_PID" >> /dev/null
        echo "$DESC stopped"
        return 0
    else
        ## Program is not running, exit with error.
        echo "Error! $DESC not started!"
        exit 1
    fi
}

restart() {
    cd $APP_ROOT
    check_pid
    if [ "$PID" -ne 0 -a "$STATUS" -ne 0 ]; then
        echo "Restarting $DESC..."
        kill -USR2 $(cat $WEB_SERVER_PID)
        echo "$DESC restarted."
        exit 0
    else
        echo "Error, $NAME not running!"
        start
        exit 1
    fi
}

status() {
    cd $APP_ROOT
    check_pid
    if [ "$PID" -ne 0 -a "$STATUS" -ne 0 ]; then
        echo "$DESC / Puma with PID $PID is running."
        exit 0
    else
        echo "$DESC is not running."
        exit 1
    fi
}

## Check to see if we are running as root first.
if [ "$(id -u)" != "0" ]; then
    echo "This script must be run as root"
    exit 1
fi

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        restart
        ;;
    reload|force-reload)
        echo -n "Reloading $NAME configuration: "
        kill -HUP $(cat $PID)
        echo "done."
        ;;
    status)
        status
        ;;
    *)
        echo "Usage: sudo service redmine {start|stop|restart|reload|status}" >&2
        exit 1
        ;;
esac

exit 0