要将dashboard部署到服务器上，我们还需要一个服务器用于运行ruby程序，这里用到的是unicorn。

Unicorn 配置

这个世界让人联想起部署python时用到的gunicorn，下面这些来自于网上。

Unicorn

1. 为 Rack 应用程序设计的 HTTP server
2. 是一个利用Unix的高级特性开发的
3. 为具备低延迟，高带宽的连接的客户服务

安装Unicorn

gem install unicorn

配置unicorn

-- encoding: utf-8 --
root_path = File.expand_path '../', File.dirname(FILE)
日志
log_file = root_path + '/log/unicorn.log'
err_log  = root_path + '/log/unicorn_error.log'
进程标识
pid_file = '/tmp/unicorn_padrino.pid'
old_pid = pid_file + '.oldbin'
通道
socket_file = '/tmp/unicorn_padrino.sock'
worker_processes 6
working_directory root_path
timeout 30
侦听
listen 8080, tcp_nopush: false
listen socket_file, backlog: 1024
pid pid_file
stderr_path err_log
stdout_path log_file
preload_app true
before_exec do |server|
  ENV['BUNDLE_GEMFILE'] = root_path + '/Gemfile'
end
before_fork do |server, worker|
  if File.exists?(old_pid) && server.pid != old_pid
    begin
      Process.kill('QUIT', File.read(old_pid).to_i)
    rescue Errno::ENOENT, Errno::ESRCH
      puts "Send 'QUIT' signal to unicorn error!"
    end
  end
  end

配置nginx

用到的也就是在前面学用的代理

upstream app_server {
    server unix:/tmp/unicorn_padrino.sock fail_timeout=0;
}

server {
    listen   80;
    charset  utf-8;
    server_name  dashboard.phodal.com;
    keepalive_timeout 5;
    root        /home/www/iot-dashboard;
    access_log  /home/www/iot-dashboard/log/nginx_access.log;
    error_log   /home/www/iot-dashboard/log/nginx_error.log;
    rewrite_log on;
    location ~* ^/(images|javascripts|stylesheets|img)/  {
        access_log    off;
        log_not_found off;
        expires       max;
        break;
    }
    location / {
        proxy_set_header Host               $host;
        proxy_set_header X-Forwarded-Host   $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Real-IP          $remote_addr;
        proxy_set_header X-Forward-For      $proxy_add_x_forwarded_for;
        proxy_buffering  on;
        proxy_redirect   off;
        if (!-f $request_filename) {
            proxy_pass http://app_server;
            break;
        } 
    }
}

创建脚本

!/bin/sh
rvm wrapper ruby-1.9.3-p194 bootup
UNICORN=unicorn
CONFIG_FILE=/home/www/iot-dashboard/config/unicorn.rb
APP_HOME=/home/www/iot-dashboard
case "$1" in
      start)
          $UNICORN -c $CONFIG_FILE -E production -D
            ;;
      stop)
          kill -QUIT cat /tmp/unicorn_padrino.pid
            ;;
      restart|force-reload)
            kill -USR2 cat /tmp/unicorn_padrino.pid
              ;;
      *)
           echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
              exit 3
                 ;;
    esac
: