title: How can I switch development mode to production mode?
body: <p>What I have done is,</p>
  <ol>
  <li><p>I changed /etc/httpd/conf/httpd/conf like this</p>
  <p><code>RailsEnv development</code> =&gt; <code>RailsEnv production</code></p>
  </li>
  <li><p>cmd $ bundle exec rake db:create RAILS_ENV=&quot;production&quot;</p>
  </li>
  <li><p>cmd $ bundle exec rake db:migrate RAILS_ENV=&quot;production&quot;</p>
  </li>
  <li><p>I restarted server, and tried to access but it gets this error.</p>
  </li>
  </ol>
  <blockquote>
  <p>We're sorry but something went wrong</p>
  </blockquote>
  <p>config/environments/production.rb</p>
  <pre><code>Sample::Application.configure do
    # Settings specified here will take precedence over those in config/application.rb
  
    # Code is not reloaded between requests
    config.cache_classes = true
  
    # Full error reports are disabled and caching is turned on
    config.consider_all_requests_local       = false
    config.action_controller.perform_caching = true
  
    # Disable Rails's static asset server (Apache or nginx will already do this)
    config.serve_static_assets = false
  
    # Compress JavaScripts and CSS
    config.assets.compress = true
  
    # Don't fallback to assets pipeline if a precompiled asset is missed
    config.assets.compile = false
  
    # Generate digests for assets URLs
    config.assets.digest = true
  
    # Defaults to nil and saved in location specified by config.assets.prefix
    # config.assets.manifest = YOUR_PATH
  
    # Specifies the header that your server uses for sending files
     config.action_dispatch.x_sendfile_header = &quot;X-Sendfile&quot; # for apache
    # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
  
    # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
    # config.force_ssl = true
  
    # See everything in the log (default is :info)
    config.log_level = :debug
  
    # Prepend all log lines with the following tags
    # config.log_tags = [ :subdomain, :uuid ]
  
    # Use a different logger for distributed setups
    # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
  
    # Use a different cache store in production
    # config.cache_store = :mem_cache_store
  
    # Enable serving of images, stylesheets, and JavaScripts from an asset server
    # config.action_controller.asset_host = &quot;http://assets.example.com&quot;
  
    # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)
    # config.assets.precompile += %w( search.js )
  
    # Disable delivery errors, bad email addresses will be ignored
    config.action_mailer.raise_delivery_errors = false
  
    # Enable threaded mode
    # config.threadsafe!
  
    # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
    # the I18n.default_locale when a translation can not be found)
    config.i18n.fallbacks = true
  
    # Send deprecation notices to registered listeners
    config.active_support.deprecation = :notify
  
    # Log the query plan for queries taking more than this (works
    # with SQLite, MySQL, and PostgreSQL)
    # config.active_record.auto_explain_threshold_in_seconds = 0.5
    
    
  end
  </code></pre>