Rails从WEBrick连接到MySQL，但没有从Passenger连接到MySQL

Question

I just created a new Rails 4 app with MySql as follows:

rails new mysqltest -d mysql

And modified the database.yml with the right credentials.

I generated a sample contoller and updated the routes for root route.

When I start using WEBrick in production,

rails s -e production

The site works. I see the index page.

When I start using Passenger without 3000 port, I see the following error:

database configuration does not specify adapter (ActiveRecord::AdapterNotSpecified)

Passsenger is running in Production environment.

My database.yml

# 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
  database: sample
  pool: 5
  username: sample
  password: sample
  socket: /var/run/mysqld/mysqld.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
  database: sample
  pool: 5
  username: sample
  password: sample
  socket: /var/run/mysqld/mysqld.sock

production:
  adapter: mysql2
  encoding: utf8
  database: sample
  pool: 5
  username: sample
  password: sample
  socket: /var/run/mysqld/mysqld.sock

Answer 1

The case I used in database.yml file and the apache config file were different.

Both should be same. eg. production .

In apache config, I gave as Production . After changing it to production it worked.

Source - https://groups.google.com/forum/#!topic/phusion-passenger/Kr-R0gSw6i8

Answer 2

Did you create your local production database?

rake db:create:all
RAILS_ENV=production bundle exec rake db:migrate

Is your database.yml file setup properly to use a production database?

Do you have a mysql gem in your gem file.

Common problems.