Mysql Can't Connect

I'm on OS X 10.5.8 with the up-to-date Rails. I'm trying to get restful_authentication to work, but I keep getting a mysql error. I've done the re-install mysql thing.

[terminal] => Booting Mongrel => Rails 2.3.2 application starting on /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/vendor/ rails/activerecord/lib/active_record/connection_adapters/ mysql_adapter.rb:576:in `real_connect': Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) (Mysql::Error)   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ mysql_adapter.rb:576:in `connect'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ mysql_adapter.rb:204:in `initialize'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ mysql_adapter.rb:76:in `new'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ mysql_adapter.rb:76:in `mysql_connection'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ abstract/connection_pool.rb:223:in `send'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ abstract/connection_pool.rb:223:in `new_connection'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ abstract/connection_pool.rb:245:in `checkout_new_connection'   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/activerecord/lib/active_record/connection_adapters/ abstract/connection_pool.rb:188:in `checkout'    ... 26 levels...   from /Applications/MAMP/htdocs/Rails/restful_authentication_tutorial/ vendor/rails/railties/lib/commands/server.rb:84   from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'   from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'   from script/server:3 [/terminal]

I'm on OS X 10.5.8 with the up-to-date Rails. I'm trying to get restful_authentication to work, but I keep getting a mysql error. I've done the re-install mysql thing.

Where does MAMP keep its mysql socket ? If it's not /var/run/mysqld then change your database.yml so that it points at the right place.


Thanks for the advice, I had that "duh" moment when I read it...having my Rails apps in the MAMP folder messed up the mysql settings.

I moved my Rails app to the Sites folder on my Mac, I was able to get mysql to work. Now I'm having problems with my settings somewhere, my browser is giving me this message:

[browser message]

ActiveRecord::StatementInvalid in Root#index

Showing app/views/root/index.html.erb where line #5 raised:

Mysql::Error: Table 'DEV.invitations' doesn't exist: SHOW FIELDS FROM `invitations`

Extracted source (around line #5):

2: <% unless logged_in? -%><% if_in_beta? do -%> 3: <%= error_messages_for :invitation %> 4: <p>We are currently in private beta. Please enter your email address below and we will let know when an invitation becomes available.</p> 5: <% uberform_for [:user,] do |f| -%> 6: <%= f.text_field :email, :label => "Your Email:" %> 7: <%= f.submit 'Submit' %> 8: <% end -%>

[/browser message]

I have some null values in my database, could that be the source of my issue?

Thanks, Kevin

This is your problem: Mysql::Error: Table 'DEV.invitations' doesn't exist: SHOW FIELDS FROM `invitations`

Do you have a database DEV that has a table invitations? Did you migrate your database?

Yes, I did migrate the database. But I ran a rake db:migrate again to be positive and I get this error.

Mysql::Error: Duplicate entry 'devuser' for key 2: INSERT INTO `users` (`name`, `salt`, `updated_at`, `activated_at`, `crypted_password`, `remember_token_expires_at`, `activation_code`, `password_reset_code`, `enabled`, `invitation_id`, `user_type`, `remember_token`, `identity_url`, `login`, `email`, `created_at`, `invitation_limit`) VALUES('', '202e1d83b21f9d11b58926811f2b00af5e06da5e', '2009-09-18 01:11:57', NULL, 'faed49f6e2a53904ed62ca98399036e4ceacda39', NULL, '2c9c7129ba82cfdf7c27e06c3f240ac6a20bc0d0', NULL, 1, NULL, 'SiteUser', NULL, NULL, 'devuser', NULL, '2009-09-18 01:11:57', 5)

The database has the fields invitation_id and invitation_limit.

Thanks for your help,


If this is your dev environment I would drop the database and just do a clean new rake db:migrate. It's trying to insert the user devuser that I'm assuming is already in the database or your migration files tries to insert the user twice... hard to say without the full --trace output from the command...

Try to drop the db and re-run the migration that would be what I would do..

Would deleting the user through phpmyadmin be the best way of dropping the database or do I need to delete the database file altogether?

@Kevin. Did you use rake db:migrate to build your database? I think hemidull was recommending to drop the schema and redo it. But if you are building your database externally, then the error shown above means that the table doesn't exist. If table does exist, it means your database.yml configuration file is pointing to the wrong schema.

@Mukund To answer your question: Yes, I used db:migrate to build the database, then I used phpmyadmin to see what the result was, I'm new to rails programming and thought it would be useful to examine the result.

I think I have the connection to the database correct, the problem appears (to me) to be in the setup before I migrate.

I'm doing the restful_authentication with all the bells & whistles tutorial. I started over again to go from the beginning. When I get to the migration I get an error, here's the initial error and the full trace: