I have a non rails application which i am trying to deploy. It uses eventmachine and daemons. I am using mina for deployment and the server is configured to use RVM.
When I try to execute
ubuntu@ip-999-99-9-99:/var/www/myapp/current$ ruby bin/run_control.rb start
It fails stating
/usr/local/rvm/rubies/ruby-2.2.0/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- daemons (LoadError)
from /usr/local/rvm/rubies/ruby-2.2.0/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from bin/run_control.rb:1:in `<main>'
The contents for the file are
ubuntu@ip-999-99-9-99:/var/www/myapp/current$ cat bin/run_control.rb
require 'daemons'
Daemons.run('bin/run.rb')
RVM info
ruby-2.2.0:
system:
uname: "Linux ip-999-99-9-99 4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux"
system: "ubuntu/16.04/x86_64"
bash: "/bin/bash => GNU bash, version 4.3.46(1)-release (x86_64-pc-linux-gnu)"
zsh: " => not installed"
rvm:
version: "rvm 1.28.0 (latest) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]"
updated: "1 day 7 hours 3 minutes 31 seconds ago"
path: "/usr/local/rvm"
ruby:
interpreter: "ruby"
version: "2.2.0p0"
date: "2014-12-25"
platform: "x86_64-linux"
patchlevel: "2014-12-25 revision 49005"
full_version: "ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux]"
homes:
gem: "/usr/local/rvm/gems/ruby-2.2.0"
ruby: "/usr/local/rvm/rubies/ruby-2.2.0"
binaries:
ruby: "/usr/local/rvm/rubies/ruby-2.2.0/bin/ruby"
irb: "/usr/local/rvm/rubies/ruby-2.2.0/bin/irb"
gem: "/usr/local/rvm/rubies/ruby-2.2.0/bin/gem"
rake: "/usr/local/rvm/rubies/ruby-2.2.0/bin/rake"
environment:
PATH: "/usr/local/rvm/gems/ruby-2.2.0/bin:/usr/local/rvm/gems/ruby-2.2.0@global/bin:/usr/local/rvm/rubies/ruby-2.2.0/bin:/usr/local/rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin"
GEM_HOME: "/usr/local/rvm/gems/ruby-2.2.0"
GEM_PATH: "/usr/local/rvm/gems/ruby-2.2.0:/usr/local/rvm/gems/ruby-2.2.0@global"
MY_RUBY_HOME: "/usr/local/rvm/rubies/ruby-2.2.0"
IRBRC: "/usr/local/rvm/rubies/ruby-2.2.0/.irbrc"
RUBYOPT: ""
gemset: ""
The gems are installed at
:/var/www/myapp/shared/bundle/ruby/2.2.0/gems$ ls
aws-sdk-2.1.1 colorize-0.7.7 i18n-0.7.0 multi_json-1.11.1 rspec-3.2.0 rspec-support-3.2.1
aws-sdk-core-2.1.1 daemons-1.2.4 jmespath-1.0.2 net-scp-1.2.1 rspec-core-3.2.0 sshkit-1.7.1
aws-sdk-resources-2.1.1 diff-lcs-1.2.5 mina-0.3.4 net-ssh-2.9.2 rspec-expectations-3.2.0
capistrano-3.4.0 eventmachine-1.0.7 mina-multistage-1.0.2 open4-1.3.4 rspec-mocks-3.2.0
The mina deployment script is as
require 'mina/bundler'
require 'mina/git'
require 'mina/rvm' # for rvm support. (http://rvm.io)
set :rvm_path, '/usr/local/rvm/scripts/rvm'
task :environment do
invoke :'rvm:use[ruby-2.2.0@default]'
end
desc "Deploys the current version to the server."
task :deploy => :environment do
deploy do
invoke :'git:clone'
invoke :'deploy:link_shared_paths'
invoke :'bundle:install'
invoke :'deploy:cleanup'
to :launch do
queue "mkdir -p #{deploy_to}/#{current_path}/tmp/"
queue "touch #{deploy_to}/#{current_path}/tmp/restart.txt"
invoke :'start_event_machine_server'
end
end
end
task :start_event_machine_server do
queue 'cd /var/www/myapp/current && ruby bin/run_control.rb start'
end
When you use bundler to install gems outside if Ruby's global gem store, you also need to adapt the $LOAD_PATH to include this custom location before you are able to require the gem.
The most common way to achieve this is to use bundle exec. This command comes with bundler and adapts Ruby's $lOAD_PATH to include the locations of all gems specified in the Gemfile.
When you start your script as follows, Ruby should be able to find your gems (assuming your bin/run_control.rb script is executable).
bundle exec bin/run_control.rb start