gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
curl -sSL https://get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh

rvm list known

rvm install 2.2

rvm install ruby

rvm use 2.2 --default

ruby -v

[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
gpgcheck=0
enabled=1

yum -y install nginx

chkconfig nginx on
service nginx start

gem sources --add https://ruby.taobao.org/ --remove https://rubygems.org/

gem sources -l

gem install rails

rails -v

gem install puma

puma --version

gem 'puma'

rails s Puma

rm /etc/nginx/conf.d/default.conf

upstream my_app {
  server unix:///var/run/my_app.sock;
}

server {
  listen 80;
  server_name my_app_url.com; # change to match your URL
  root /var/www/my_app/public; # I assume your app is located at this location

  location / {
    proxy_pass http://my_app; # match the name of upstream directive which is defined above
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  location ~* ^/assets/ {
    # Per RFC2616 - 1 year maximum expiry
    expires 1y;
    add_header Cache-Control public;

    # Some browsers still send conditional-GET requests if there's a
    # Last-Modified header or an ETag header even if they haven't
    # reached the expiry date sent in the Expires header.
    add_header Last-Modified "";
    add_header ETag "";
    break;
  }
}

service nginx restart