capistrano deployment unable to bundle install gem with no internet connection - ruby-on-rails

Question

I am deploying my application to a new server which has everything installed.
I am using the following capistrano deploy.rb:
require "capistrano/ext/multistage"
require "bundler/capistrano"
set :default_environment, {
'ORACLE_HOME' => "/opt/oraclient/64/11.2.0.2/",
'LD_LIBRARY_PATH' => "$ORACLE_HOME/lib:/usr/local/lib",
'PATH' => "/opt/ruby/bin:$PATH:$ORACLE_HOME/bin"
}
SECURE_FILES = ['database.yml', 'ldap.yml', 'initializers/secret_token.rb']
set :application, "myapp"
set :use_sudo, false
set :scm, :git
set :repository, "ssh://git#hostname:7999/web/myapp.git"
set :user, "webuser"
set :deploy_via, :remote_cache
after "deploy:update_code", "custom:create_symlinks", "custom:assets_precompile", "custom:miscellaneous"
after "deploy", "deploy:migrate"
after "deploy", "deploy:cleanup"
namespace :deploy do
desc "Restarting mod_rails with restart.txt"
task :restart, :roles => :app, :except => { :no_release => true } do
run "touch #{current_path}/tmp/restart.txt"
end
[:start, :stop].each do |t|
desc "#{t} task is a no-op with mod_rails"
task t, :roles => :app do ; end
end
namespace :web do
desc "Enable maintenance mode for apache"
task :enable_maintenance, :role => :web do
run "mkdir -p #{shared_path}/system"
on_rollback { run "rm -f #{shared_path}/system/maintenance.html" }
page = File.read('public/maintenance.html')
put page, "#{shared_path}/system/maintenance.html", :mode => 0644
end
desc "Disable maintenance mode for apache"
task :disable_maintenance, :role => :web do
run "rm -f #{shared_path}/system/maintenance.html"
end
end
end
namespace :custom do
desc "Creating config, bundler-GEMS symlinks"
task :create_symlinks, :roles => :app do
#Secure Configuration File Symlinks
SECURE_FILES.each do |link|
fobj = "#{release_path}/config/#{link}"
run <<-CMD
if [ -e #{fobj} ]; then rm -f #{fobj}; fi;
rm -f #{previous_release}/config/#{fobj};
ln -s #{vormetric_path}/#{application}/#{link} #{fobj};
CMD
end
#Bundler GEM Installation Symlink
shared_bundler_dir = File.join(shared_path, 'bundle')
release_bundler_dir = File.join(current_release, 'vendor/bundle')
run "ln -s #{shared_bundler_dir} #{release_bundler_dir}"
end
desc "Assets Pre-Compilation"
task :assets_precompile, :roles => :app do
run "cd #{current_release} && RAILS_ENV=#{rails_env} bundle exec rake assets:precompile"
end
desc "Miscellaneous Tasks"
task :miscellaneous, :roles => :app do
run "chmod -f +w #{current_release}/db/schema.rb"
end
end
This is box-specific deploy script myhostname.rb:
server "myhostname", :app, :web, :db, :primary => true
set :deploy_to, "/opt/web/var/myapp"
set :rails_env, "customertest"
set :branch, "staging"
Now the remote box does not have access to internet, but I have all my gems stored under vendor/cache. So it should pick up from there.(vendor/cache has nokigiri under /myapp/current/vendor/cache on remote server)
When i run
cap deploy servername
, i get the following error:
** [out :: myhost] An error occurred while installing nokogiri (1.5.9), and Bundler cannot
** [out :: myhost] continue.
** [out :: myhost] Make sure that `gem install nokogiri -v '1.5.9'` succeeds before bundling.
My remote box where the code is supposed to be deployed has the following folders set up:
/opt/web/var/myapp
/opt/web/var/myapp/current(where all the code is cloned currently)
/opt/web/var/myapp/releases
/opt/web/var/myapp/shared
I am not sure how it i supposed to pick up and install the gem.

Answer 1

This quote from bundler docs might be relevant (emphasis mine):
http://bundler.io/v1.9/bundle_package.html
By default, if you simply run bundle install after running bundle package, Bundler will still connect to rubygems.org to check whether a platform-specific gem exists for any of the gems in vendor/cache.
This behavior can be avoided by instead running bundle install --local. Note that this requires you to have the correctly platformed version for all of your gems already cached. The easiest way to achieve this is to run bundle package on an identical machine and then check in those vendored gems.
So, in short, you need to pass the --local flag when running bundler in the production server to avoid connecting to rubygems altogether.
The solution for use with capistrano is to set this variable in you deploy.rb file:
# deployment and quiet are used by default, we add the local flag
set :bundle_flags, "--deployment --quiet --local"