Capistrano, Rails "gem is not loaded. Add `gem 'sqlite3'` to your Gemfile"

StackOverflow https://stackoverflow.com/questions/22509872

Question

To start off, I am a beginner when it comes to Rails and Capistrano. My development environment works without any issues and I wanted to push first as a test environment on a local virtual machine with the same setup as my production server.

I chose Capistrano to handle the deployment and setup everything according to the tutorial of the official website.

The specs are:

  • ubuntu
  • ruby-2.0.0-p247
  • rails 4.1.0.beta1
  • capistrano 3
  • phusion passenger

My Gemfile:

gem 'rails', '4.1.0.beta1'
gem 'rails-i18n', '~> 4.0.0'

group :assets do
  # Use SCSS for stylesheets
  gem 'sass-rails', '4.0.2'

  gem 'uglifier', '>= 1.3.0'
end

gem 'bourbon'
gem 'foundation-rails'

group :development do

  gem 'capistrano', '~> 3.0.1'
  gem 'net-ssh', '~> 2.7.0'
  gem 'capistrano-rails', '~> 1.1.0'
  gem 'capistrano-bundler'
  gem 'capistrano-rvm'
  gem 'capistrano-rbenv', "~> 2.0"
end

group :development, :test do
  gem 'sqlite3'
  gem 'rspec-rails'
end

group :test, :production do
#  gem 'mysql2'
end

gem 'jquery-rails'

My deploy.rb file:

set :application, 'appliname'
set :deploy_user, 'deploy'
set :use_sudo,    false
set :repo_url, 'git@server:path/to/project.git'
set :branch, "master"

set :scm, :git

# set :format, :pretty
# set :log_level, :debug
set :pty, true

# setup rvm.
set :rbenv_type, :system
set :rbenv_ruby, 'ruby-2.0.0-p247'
set :rbenv_prefix, "RBENV_ROOT=#{fetch(:rbenv_path)} RBENV_VERSION=#{fetch(:rbenv_ruby)} #{fetch(:rbenv_path)}/bin/rbenv exec"
set :rbenv_map_bins, %w{rake gem bundle ruby rails}

# files we want symlinking to specific entries in shared.
set :linked_files, %w{config/database.yml config/private_env.yml}

# dirs we want symlinking to shared
set :linked_dirs, %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}

# set :default_env, { path: "/opt/ruby/bin:$PATH" }
set :keep_releases, 5

namespace :deploy do

  # make sure we're deploying what we think we're deploying
  # only allow a deploy with passing tests to deployed
  # before :deploy, "deploy:run_tests"

  desc 'Restart application'
  task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      # Your restart mechanism here, for example:
      execute :touch, release_path.join('tmp/restart.txt')
    end
  end

  after :restart, :clear_cache do
    on roles(:web), in: :groups, limit: 3, wait: 10 do
      # Here we can do anything such as:
       within release_path do
         execute :rake, 'cache:clear'
       end
    end
  end

  # compile assets locally then rsync
  # after 'deploy:symlink:shared', 'deploy:compile_assets'
  # after :finishing, 'deploy:cleanup'

end

deploy/test.rb

set :stage, :test

server 'testserver.local', user: fetch(:deploy_user), roles: %w{web app db}
set :deploy_to, '/home/project/public'
set :enable_ssl, false

My database.yml At first I wanted to use MySql even for my test environment, but for the deployment debugging sake, I temporary put sqlite.

default: &default
  adapter: sqlite3
  pool: 5
  timeout: 5000

development:
  <<: *default
  database: db/development.sqlite3

test: &test
  <<: *default
  database: db/test.sqlite3
#  adapter: mysql2
#  encoding: utf8
#  reconnect: true
#  database: ENV['database']
#  pool: 5
#  username: ENV['username']
#  password: ENV['password']
#  host: localhost

production:
  <<: *test

And finally the error message after running the following deply command:

cap test deploy

Error:

DEBUG [f012bc9e] Command: cd /home/project/public/releases/20140319125218 && ( RAILS_ENV=test bundle exec rake assets:precompile )
DEBUG [f012bc9e]    rake aborted!
DEBUG [f012bc9e]
DEBUG [f012bc9e]    Specified 'sqlite3' for database adapter, but the gem is not loaded. Add `gem 'sqlite3'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord).
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/connection_adapters/connection_specification.rb:58:in `rescue in resolve_hash_connection'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/connection_adapters/connection_specification.rb:55:in `resolve_hash_connection'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/connection_adapters/connection_specification.rb:46:in `resolve_string_connection'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/connection_adapters/connection_specification.rb:30:in `spec'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/connection_handling.rb:39:in `establish_connection'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/railtie.rb:126:in `block (2 levels) in <class:Railtie>'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/lazy_load_hooks.rb:27:in `each'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/lazy_load_hooks.rb:27:in `on_load'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activerecord-4.1.0.beta1/lib/active_record/railtie.rb:124:in `block in <class:Railtie>'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/initializable.rb:30:in `instance_exec'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/initializable.rb:30:in `run'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/
DEBUG [f012bc9e]    ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/initializable.rb:55:in `block in run_initializers'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/initializable.rb:54:in `run_initializers'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/application.rb:285:in `initialize!'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/releases/20140319125218/config/environment.rb:8:in `<top (required)>'
DEBUG [f012bc9e]
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require'
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `block in require'
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:232:in `load_dependency'
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/activesupport-4.1.0.beta1/lib/active_support/dependencies.rb:247:in `require'
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/application.rb:261:in `require_environment!'
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/railties-4.1.0.beta1/lib/rails/application.rb:344:in `block in run_tasks_blocks'
DEBUG [f012bc9e]    /home/project/public/shared/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.1/lib/sprockets/rails/task.rb:54:in `block (2 levels) in define'
DEBUG [f012bc9e]    Tasks: TOP => environment
DEBUG [f012bc9e]
DEBUG [f012bc9e]    (See full trace by running task with --trace)
DEBUG [f012bc9e]
cap aborted!
rake stdout: Nothing written
rake stderr: Nothing written
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/command.rb:94:in `exit_status='
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:142:in `block (4 levels) in _execute'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:551:in `call'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:551:in `do_request'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:561:in `channel_request'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:221:in `preprocess'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:205:in `process'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `block in loop'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:269:in `wait'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:164:in `block (2 levels) in _execute'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:514:in `call'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/channel.rb:514:in `do_open_confirmation'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:545:in `channel_open_confirmation'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:465:in `dispatch_incoming_packets'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:221:in `preprocess'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:205:in `process'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `block in loop'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.8.0/lib/net/ssh/connection/session.rb:169:in `loop'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:166:in `block in _execute'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `tap'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `_execute'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:66:in `execute'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-rails-1.1.1/lib/capistrano/tasks/assets.rake:59:in `block (6 levels) in <top (required)>'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/abstract.rb:89:in `with'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-rails-1.1.1/lib/capistrano/tasks/assets.rake:58:in `block (5 levels) in <top (required)>'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/abstract.rb:81:in `within'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-rails-1.1.1/lib/capistrano/tasks/assets.rake:57:in `block (4 levels) in <top (required)>'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `instance_exec'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `run'
/Users/username/.rvm/gems/ruby-2.0.0-p247/gems/sshkit-1.3.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
Tasks: TOP => deploy:assets:precompile
(See full trace by running task with --trace)
The deploy has failed with an error: #<SSHKit::Command::Failed: rake stdout: Nothing written
rake stderr: Nothing written

So basically, with either the MySql2 gem or sqlite gem, I have the same kind of error... I am completely lost and have been looking over the web and did multiple tests with no avail.

Obviously I have run on the dev computer 'bundle update' and 'bundle install' when necessary. But I suppose that all these commands are run automatically by Capistrano on deployment.

So if a good soul could help with this it would make me very happy and I might stop losing my hair (or not) :)

If more info is needed, please ask! Thank you

Was it helpful?

Solution

Your sqlite3 gem is not being loaded in production, because of where you've got it in the Gemfile. Take it out of any groups, or move it to the group :test, :production group.

OTHER TIPS

Your sqlite3 gem is not being loaded in production, because of the version mismatch. so, update you gemfile as gem 'sqlite3', '~> 1.3.13' it'll work. Keep it under group :production, :test It'll be good when you push your code to heroku.

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