installing rails on ubuntu

rails_install_ubuntu.gist

1. sudo apt-get update
2. sudo apt-get install git
3. git clone git://github.com/sstephenson/rbenv.git .rbenv
4. echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
5. echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
6. exec $SHELL
7. git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
8. echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bash_profile
9. exec $SHELL
10. source ~/.bash_profile
10a. cd ~/.rbenv/plugins
10b. git clone https://github.com/sstephenson/rbenv-vars.git
11. sudo apt-get install build-essential
12. sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev
12. rbenv install -v 2.2.2
13. rbenv global 2.2.2
14. echo "gem: --no-document" > ~/.gemrc
15. gem install bundler
16. gem install rails -v 4.2.5
17. rbenv rehash
18. gem install rails-api
19. rbenv rehash
20. sudo add-apt-repository ppa:chris-lea/node.js
21. sudo apt-get update
22. sudo apt-get install nodejs

// install postgresql

23. sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
24. wget -q https://www.postgresql.org/media/keys/ACCC4CF8.asc -O - | sudo apt-key add -
25. sudo apt-get update
26. sudo apt-get install postgresql postgresql-contrib
27. sudo su - postgres //postgres is the user created when downloaded
28. psql
29. \conninfo //to check connection info
30. create role app_name login createdb;
31. ALTER ROLE app_name WITH PASSWORD 'passwordgohere'; // password must be in single quotes and maybe need to alter role with create db as well as password again if not working
32. \q //to quit
33. sudo vi /etc/postgresql/9.5/main/pg_hba.conf go to bottom and change peer to md5

// for rails pg gem

33. sudo apt-get install libpq-dev // will fix error when installing pg gem
34. gem install passenger
35. sudo apt-get install nginx
36. add gem 'unicorn'
37. vi config/unicorn.rb
copy and paste this:
# set path to application
app_dir = File.expand_path("../..", __FILE__)
shared_dir = "#{app_dir}/shared"
working_directory app_dir


# Set unicorn options
worker_processes 2
preload_app true
timeout 30

# Set up socket location
listen "#{shared_dir}/sockets/unicorn.sock", :backlog => 64

# Logging
stderr_path "#{shared_dir}/log/unicorn.stderr.log"
stdout_path "#{shared_dir}/log/unicorn.stdout.log"

# Set master PID location
pid "#{shared_dir}/pids/unicorn.pid"

38. mkdir -p shared/pids shared/sockets shared/log
39. sudo vi /etc/init.d/unicorn_appname

copy paste this replace user and app_name with proper values:
#!/bin/sh

### BEGIN INIT INFO
# Provides:          unicorn
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the unicorn app server
# Description:       starts unicorn using start-stop-daemon
### END INIT INFO

set -e

USAGE="Usage: $0 <start|stop|restart|upgrade|rotate|force-stop>"

# app settings
USER="deploy"
APP_NAME="appname"
APP_ROOT="/home/$USER/$APP_NAME"
ENV="production"

# environment settings
PATH="/home/$USER/.rbenv/shims:/home/$USER/.rbenv/bin:$PATH"
CMD="cd $APP_ROOT && bundle exec unicorn -c config/unicorn.rb -E $ENV -D"
PID="$APP_ROOT/shared/pids/unicorn.pid"
OLD_PID="$PID.oldbin"

# make sure the app exists
cd $APP_ROOT || exit 1

sig () {
  test -s "$PID" && kill -$1 `cat $PID`
}

oldsig () {
  test -s $OLD_PID && kill -$1 `cat $OLD_PID`
}

case $1 in
  start)
    sig 0 && echo >&2 "Already running" && exit 0
    echo "Starting $APP_NAME"
    su - $USER -c "$CMD"
    ;;
  stop)
    echo "Stopping $APP_NAME"
    sig QUIT && exit 0
    echo >&2 "Not running"
    ;;
  force-stop)
    echo "Force stopping $APP_NAME"
    sig TERM && exit 0
    echo >&2 "Not running"
    ;;
  restart|reload|upgrade)
    sig USR2 && echo "reloaded $APP_NAME" && exit 0
    echo >&2 "Couldn't reload, starting '$CMD' instead"
    $CMD
    ;;
  rotate)
    sig USR1 && echo rotated logs OK && exit 0
    echo >&2 "Couldn't rotate logs" && exit 1
    ;;
  *)
    echo >&2 $USAGE
    exit 1
    ;;
esac

40. sudo chmod 755 /etc/init.d/unicorn_appname //this line and next for starting and stopping on boot
41. sudo update-rc.d unicorn_appname defaults
42. sudo service unicorn_appname start // now its started but before it will be availabe to outside user must set up nginx reverse proxy

43. sudo vi /etc/nginx/sites-available/default // open default server block with vi
44. replace files contents with following highlight out things if you dont want to delete:
upstream app {
    # Path to Unicorn SOCK file, as defined previously
    server unix:/home/deploy/appname/shared/sockets/unicorn.sock fail_timeout=0;
}

server {
    listen 80;
    server_name localhost;

    root /home/deploy/appname/public;

    try_files $uri/index.html $uri @app;

    location @app {
        proxy_pass http://app;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
    }

    error_page 500 502 503 504 /500.html;
    client_max_body_size 4G;
    keepalive_timeout 10;
}
45. // This configures Nginx as a reverse proxy, so HTTP requests get forwarded to the Unicorn application server via a Unix socket
46. go back to rails main directory and do the command RAILS_ENV=production rake db:create if you have not already done so
47. then migrate with this RAILS_ENV=production rake db:migrate
48. sudo service nginx restart //restart nginx to see changes
49. listen on port 80 http://public_ip
50. make sure all env variables are set properly try using rbenv vars