私は現在、Rails プロジェクト (これが私の最初の Rails プロジェクトなので、何か重要なことを見逃している場合は申し訳ありません) の (私は newby を願っています) 問題で立ち往生しています。私はこれに数時間取り組んできましたが、解決策が見つからないようです。次のスレッドの解決策を試してみましたが、役に立ちませんでした。
ソケット経由でローカルの MySQL サーバーに接続できません
ソケット '/tmp/mysql.sock' を介してローカル MySQL サーバーに接続できない (2)
ソケット '/tmp/mysql.sock' を介してローカル MySQL サーバーに接続できません
リストは続きますが、いくつかのスレッドは私の状況に似ていますが、他のスレッドはストローをつかんでいるだけです. 私の状況を簡単に紹介します。
- プロジェクトはMacで開発されました
- 最近、展開プロセスを学習する手段としてテスト サーバーをセットアップしました。
- サーバーはUbuntu Server 12.04を実行しています
カピストラーノの展開チュートリアルを含む、いくつかのチュートリアルに従ってセットアップすることができました。
$ rake RAILS_ENV=production db:schema:load
これは、ローカルMySQLサーバーに接続できないというエラーに最初に遭遇した場所でした。
--trace で実行すると、次の出力が得られます。
** Invoke db:schema:load (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock' (2)
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/mysql2-0.3.11/lib/mysql2/client.rb:44:in `connect'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/mysql2-0.3.11/lib/mysql2/client.rb:44:in `initialize'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `new'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `mysql2_connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:277:in `new_connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:287:in `checkout_new_connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:235:in `block (2 levels) in checkout'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `loop'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `block in checkout'
/usr/share/ruby-rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:229:in `checkout'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:95:in `connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:374:in `retrieve_connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:168:in `retrieve_connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:142:in `connection'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/model_schema.rb:308:in `clear_cache!'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/railtie.rb:91:in `block (2 levels) in <class:Railtie>'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:418:in `_run__427268845__prepare__407057367__callbacks'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:405:in `__run_callback'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:81:in `run_callbacks'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/actionpack-3.2.2/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/actionpack-3.2.2/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application/finisher.rb:47:in `block in <module:Finisher>'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:30:in `instance_exec'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:30:in `run'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:55:in `block in run_initializers'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:54:in `each'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:54:in `run_initializers'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application.rb:136:in `initialize!'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/railtie/configurable.rb:30:in `method_missing'
/var/www/little_oven_deploy/releases/20120705162026/config/environment.rb:5:in `<top (required)>'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:251:in `require'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:251:in `block in require'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:236:in `load_dependency'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:251:in `require'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application.rb:103:in `require_environment!'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application.rb:292:in `block (2 levels) in initialize_tasks'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/usr/share/ruby-rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:176:in `block in invoke_prerequisites'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `each'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `invoke_prerequisites'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:157:in `block in invoke_with_call_chain'
/usr/share/ruby-rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/bin/rake:19:in `load'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@global/bin/rake:19:in `<main>'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/bin/ruby_noexec_wrapper:14:in `eval'
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => db:schema:load => environment
私のdatabase.ymlファイルは次のとおりです。
# MySQL. Versions 4.1 and 5.0 are recommended.
#
# Install the MYSQL driver
# gem install mysql2
#
# Ensure the MySQL gem is defined in your Gemfile
# gem 'mysql2'
#
# And be sure to use new-style password hashing:
# http://dev.mysql.com/doc/refman/5.0/en/old-client.html
development:
adapter: mysql2
encoding: utf8
reconnect: false
database: little_oven_devel
pool: 5
username: devel
password: Development1
socket: /var/run/mysqld/mysql.sock
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
adapter: mysql2
encoding: utf8
reconnect: false
database: little_oven_test
pool: 5
username: root
password:
socket: /tmp/mysql.sock
production:
adapter: mysql2
encoding: utf8
reconnect: false
database: little_oven_production
pool: 5
username: production
password: Production1
socket: /var/run/mysqld/mysql.sock
これは mac OSX の標準インストールとは異なるため、ubuntu の .sock ファイルであると思われるものに対応するようにソケット変数の場所を変更したことに注意してください。
最後に、実行時にも同じエラーが発生します
rails c
次の出力で：
/usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/mysql2-0.3.11/lib/mysql2/client.rb:44:in `connect': Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock' (2) (Mysql2::Error)
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/mysql2-0.3.11/lib/mysql2/client.rb:44:in `initialize'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `new'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/mysql2_adapter.rb:16:in `mysql2_connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:277:in `new_connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:287:in `checkout_new_connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:235:in `block (2 levels) in checkout'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `loop'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `block in checkout'
from /usr/share/ruby-rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:229:in `checkout'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:95:in `connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:374:in `retrieve_connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:168:in `retrieve_connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/connection_adapters/abstract/connection_specification.rb:142:in `connection'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/model_schema.rb:308:in `clear_cache!'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activerecord-3.2.2/lib/active_record/railtie.rb:91:in `block (2 levels) in <class:Railtie>'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:418:in `_run__485859349__prepare__1069885904__callbacks'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:405:in `__run_callback'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/callbacks.rb:81:in `run_callbacks'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/actionpack-3.2.2/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/actionpack-3.2.2/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application/finisher.rb:47:in `block in <module:Finisher>'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:30:in `instance_exec'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:30:in `run'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:55:in `block in run_initializers'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:54:in `each'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/initializable.rb:54:in `run_initializers'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application.rb:136:in `initialize!'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /var/www/little_oven_deploy/releases/20120705162026/config/environment.rb:5:in `<top (required)>'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:251:in `require'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:251:in `block in require'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:236:in `load_dependency'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/activesupport-3.2.2/lib/active_support/dependencies.rb:251:in `require'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/application.rb:103:in `require_environment!'
from /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/railties-3.2.2/lib/rails/commands.rb:40:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
場所 /usr/share/ruby-rvm/gems/ruby-1.9.2-p318@rails_3_2/gems/mysql2-0.3.11/lib/mysql2/client.rb が有効であることを指摘したいと思います。また、mysql が実行されており、次のコマンドでアクセスできます。
mysql -u production -p