AWS User Script for getting a server ready for Ruby, Rails, Sinatra, or Rack apps.

user_script.sh

#!/usr/bin/env bash
#
# Author: Robert R Evans
#
# Description: AWS Ubuntu 13 Ruby Setup Script
#
# This script will setup a ubuntu box for Ruby, Rails, Sinatra, and/or Rack
# development/staging/production usage. It also installs Nodejs, Nginx, Git,
# Rbenv, and PostgreSQL adapters for using RDMS PostgreSQL. It assumes that
# git-deploy will be used, in place of the traditional capistrano deployments.
#
# Rational: Why not just use Puppet, Chef, or the many other systems?
#
# I'm tired of keeping up with everyone's projects, fixing things when they break
# them; having to update/change my code/process because 3rd party software either
# doesn't support their own API or decides to change it all together when it is
# working great for me. Lastly, I'm just tired of learning and relearning tools
# that will soon be out of fashion only to have to learn some new tool that will
# have a limited lifespan.
#
# That's not say the above tools are as I described, but rather I'd just like to
# stick to what I know and what works. I can then spend my time on things that I
# really want to do instead of on tools that I don't care about.
#
# I'm over the "shiny new toy" syndrome. I just want to get things done.

set -ex

# These can be changed to represent the GIT user. Ideally, the 'name' would be changed to the
# name of the application that is deployed to the machine it sits on.
name="Ubuntu Deploy User"
email="deploy@codewranglers.org"
app="rubyapp"

# log everything that runs in this script
exec > >(tee /var/log/user-data.log|logger -t user-data -s 2>/dev/console) 2>&1

# mark the start time of the script
echo BEGIN
date '+%Y-%m-%d %H:%M:%S'

# update & upgrade
sudo apt-get update -y
sudo apt-get upgrade -y

# install base packages
sudo apt-get install -y libcurl4-gnutls-dev libexpat1-dev gettext libz-dev libssl-dev build-essential libpq-dev zlib1g-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libyaml-dev curl libxml2 lobxslt1-dev

# add some repositories that have more up-to-date packages
sudo add-apt-repository ppa:nginx/stable
sudo add-apt-repository ppa:git-core/ppa
sudo add-apt-repository ppa:chris-lea/node.js

# update
sudo apt-get update -y

# install nginx, git, and nodejs
sudo apt-get install -y nginx git-core nodejs

# install rbenv in the /home/ubuntu directory
cd
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
exec $SHELL

# install rbenv's ruby-build for easy new ruby installs
git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
exec $SHELL

# install some rbenv plugins
git clone https://github.com/sstephenson/rbenv-vars.git ~/.rbenv/plugins/rbenv-vars
git clone https://github.com/sstephenson/rbenv-gem-rehash.git ~/.rbenv/plugins/rbenv-gem-rehash
exec $SHELL

# install the latest ruby version
rbenv install 2.1.0

# set the latest ruby version globally
rbenv global 2.1.0

# set gems to not install any documentation
echo "gem: --no-ri --no-rdoc" > ~/.gemrc

# update to the latest RubyGem release
gem update --system

# install bundler
gem install bundler --pre

# configure git
git config --global color.ui true
git config --global user.name $name
git config --global user.email $email

# create ssh keys for git deploys
ssh-keygen -t rsa -C $email

# add some aliases to the ubuntu user
echo 'alias c="clear"' >> ~/.bashrc

# Setup the Nginx Conf file
sudo tee /etc/nginx/sites-available/nginx_puma.conf <<EOTL
upstream puma_server {
  server unix:<%= puma_sock %> fail_timeout=0;
}

# ssl_session_cache   shared:SSL:10m;
# ssl_session_timeout 10m;

server {
  listen 80 default deferred;

  # listen 443 ssl;
  # server_name example.com;

  # client_max_body_size  8m;     # Default is set to 1k for protection against buffer overflows
  # keepalive_timeout     70;     # default is set to 5 5 for performance

  # ssl_certificate       <%= shared_path + "/certs/server.crt" %>;
  # ssl_certificate_key   <%= shared_path + "/certs/server.key" %>;


  server_name $app.com;
  root /home/ubuntu/$app/public;

  location / {
    proxy_set_header            X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header            Host $http_host;
    proxy_pass_request_headers  on;
    proxy_redirect              off;

    # If you don't find the filename in the static files
    # Then request it from the unicorn server
    if (!-f $request_filename) {
      proxy_pass http://puma_server;
      break;
    }
  }

  location ~* ^/assets/ {
    root        <%= current_path %>/public;
    gzip_static on;
    expires     1y;
    add_header  Cache-Control public;

    add_header  Last-Modified "";
    add_header  ETag "":
    break;
  }

  # this rewrites all the requests to the maintenance.html
  # page if it exists in the doc root. This is for capistrano's
  # disable web task
  if (-f $document_root/system/maintenance.html) {
    rewrite  ^(.*)$  /system/maintenance.html last;
    break;
  }

  error_page 500 502 503 504 /500.html;
  location = /500.html {
    root <%= current_path %>/public;
  }

  error_page 404  /404.html;
  location = /404.html {
    root <%= current_path %>/public;
  }
}
EOTL

sudo ln -sf /etc/nginx/sites-available/nginx_puma.conf /etc/nginx/sites-enabled/nginx_puma.conf

sudo mv /etc/nginx/nginx.conf /etc/nginx/nginx.conf.old
sudo tee /etc/nginx/nginx.conf <<EOTL
user www-data;
worker_processes 4;

pid /var/run/nginx.pid;

events {
  use epoll;
  worker_connections 1024;
  # multi_accept on;
}

http {

  ##
  # Basic Settings
  ##

  include /etc/nginx/mime.types;
  default_type application/octet-stream;

  sendfile    on;
  tcp_nopush  on;
  tcp_nodelay on;

  # do not display version numbers in the browser
  server_tokens off;

  # server_names_hash_bucket_size 64;
  server_name_in_redirect off;

  # control buffer overflow attacks
  client_body_buffer_size     1K;
  client_header_buffer_size   1k;
  client_max_body_size        1k;
  large_client_header_buffers 2 1k;

  # control timeouts, improve performance, and cut clients
  client_body_timeout         10;
  client_header_timeout       10;
  keepalive_timeout           5 5;
  send_timeout                10;
  types_hash_max_size         2048;

  ##
  # Logging Settings
  ##

  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

  access_log /var/log/nginx/access.log main;
  error_log  /var/log/nginx/error.log notice;


  ##
  # Gzip Settings
  ##

  gzip                  on;
  gzip_http_version     1.0;
  gzip_comp_level       2;
  gzip_proxied          any;
  gzip_disable          "MSIE [1-6]\.(?!.*SV1)";
  gzip_buffers          4 16k;
  gzip_min_length       0;

  gzip_types            text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;


  ##
  # nginx-naxsi config
  #
  # Uncomment it if you installed nginx-naxsi
  ##

  #include /etc/nginx/naxsi_core.rules;

  ##
  # nginx-passenger config
  #
  # Uncomment it if you installed nginx-passenger
  ##

  #passenger_root /usr;
  #passenger_ruby /usr/bin/ruby;

  ##
  # Virtual Host Configs
  ##

  include /etc/nginx/conf.d/*.conf;
  include /etc/nginx/sites-enabled/*;
}


#mail {
# # See sample authentication script at:
# # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
# # auth_http localhost/auth.php;
# # pop3_capabilities "TOP" "USER";
# # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
# server {
#   listen     localhost:110;
#   protocol   pop3;
#   proxy      on;
# }
#
# server {
#   listen     localhost:143;
#   protocol   imap;
#   proxy      on;
# }
#}
EOTL

sudo service nginx restart

# mark the end time of the script
date '+%Y-%m-%d %H:%M:%S'
echo END