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Launch Rails 4 application with passenger and nginx

I've recently built simple Rails application. Then I decided to move it to "interwebs" and make it live. But... it wasnt' as straigtforward as I thought. Even though there are gazilion tutorials - it just didn't work. After about work of struggle - finally I figured it out. Here is step by step instruction that worked for me, I borrowed different steps from different tutorials. My stack is Linux, Nginx, Passenger, Ruby 2, Rails 4, MySQL, Node.js.

I decided to use Digital Ocean as a web host as its prices are very reasonable and support is great (although they couldn't resolve the issues I had). In this case I use 1GB Ram, 30GB SSD Disk droplet with Ubuntu 12.04 x64. Before you perform all these commands transfer your rails app to some directory, I used filezilla and used same SSH login info (root or other admin username).

  1. ssh root@ SSH as root, using IP address and password you get by email
  2. adduser alex Create new username, because using root is not recommended.
  3. visudo Open sudo config file and add admin privileges to newly created user.
  4. alex ALL=(ALL) ALL) add this and ctrl+x to save 'y' and enter to overwrite
  5. sudo apt-get update update system packages
  6. curl -L | bash -s stable install ruby version manager
  7. source ~/.rvm/scripts/rvm load RVM
  8. rvm requirements install all RVM dependencies
  9. rvm install 2.0.0 install ruby version, in this case 2
  10. rvm use 2.0.0 load installed ruby version as default
  11. rvm rubygems current install rubygems
  12. gem install rails install latest rails, in this case Rails 4
  13. gem install passenger install latest passenger
  14. sudo apt-get install libcurl4-openssl-dev install openssl required by nginx
  15. rvmsudo passenger-install-nginx-module select all default options.
  16. sudo apt-get install nodejs install Node.js
  17. sudo apt-get install npm install node package manager
  18. I tried to update node through npm - even after success node version was the same...
  19. Make nginx command availablewget -O sudo mv /etc/init.d/nginx sudo chmod +x /etc/init.d/nginx sudo /usr/sbin/update-rc.d -f nginx defaultsafter that you can control nginx with sudo /etc/init.d/nginx stop sudo /etc/init.d/nginx start sudo /etc/init.d/nginx restart
  20. sudo nano /opt/nginx/conf/nginx.conf edit nginx configurations
  21. servername - your IP or domain name, root - location of rails app public folder`server { listen 80; servername; passengerenabled on; root /var/www/myawesomerailsapp/public; }`
  22. Don't forget to comment out "location / { index.html }" line in config file
  23. sudo /etc/init.d/nginx start open IP or domain in browser and see welcome message
  24. sudo apt-get install mysql-server libapache2-mod-auth-mysql php5-mysql install mysql server
  25. sudo mysql_install_db and then sudo /usr/bin/mysql_secure_installation
  26. mysql -u root -p login to mysql shell with password you just set
  27. while in mysql shell create new database and add this to database.yml production
  28. CREATE DATABASE database name; CREATE USER 'alex'@'localhost' IDENTIFIED BY 'set_your_password_here'; GRANT ALL PRIVILEGES ON your_database.* TO 'alex'@'localhost' WITH GRANT OPTION; exit;
  29. sudo apt-get install git-core install git
  30. sudo apt-get install libmysql-ruby libmysqlclient-dev install mysql adapter for rails
  31. bundle install CD to your rails app and install all dependencies
  32. rake db:migrate RAILS_ENV=production run all migrations in production mode
  33. RAILS_ENV=production bundle exec rake assets:precompile precompile all assets
  34. if you see permission error, run sudo chown -R alex:www-data public to gain ownership over the directory
  35. sudo /etc/init.d/nginx start restart nginx