Capistrano with bundler

Today I suddenly got an error on website, it said there is one gem doesn’t been installed somehow. but when I ssh to server, use bundle install, found both server was installed all gems that application needs.

Finally I got the reason, the passenger doesn’t loading the gems correctly from bundler, so you have to run bundle install like this way bundle install --deployment. This installation will move all gems to “vendor/bundle”, which will freeze all version of gems into the project.

For capistrano, add below lines into deploy.rb file:

  set :bundle_roles, [:app]
  require 'bundler/capistrano'