Mongoid Replication Config causing ArgumentError

Question

I added Replication to my production part of mongoid as shown below:

production:
  hosts:
    - - <%= ENV['MONGO_URL1'] %>:<%= ENV['MONGO_PORT'] %>
    - - <%= ENV['MONGO_URL2'] %>:<%= ENV['MONGO_PORT'] %>
  read: :secondary
  username: <%= ENV['MONGO_USERNAME'] %>
  password: <%= ENV['MONGO_PASSWORD'] %>
  database: <%= ENV['MONGO_DATABASE'] %>
  max_retries_on_connection_failure: 10

This works in production on Heroku, but locally, it's causing my server to fail at starting giving error:

ROOT /Users/bashar/rails-projects/my-project /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/syck.rb:135:in load': syntax error on line 13, col 9: - - :' (ArgumentError) from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/syck.rb:135:in load' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/mongoid-2.4.7/lib/mongoid/railtie.rb:83:inblock in ' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:30:in instance_exec' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:30:inrun' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:55:in block in run_initializers' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:54:ineach' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:54:in run_initializers' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:96:ininitialize!' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/railtie/configurable.rb:30:in method_missing' from /Users/bashar/rails-projects/my-project/config/environment.rb:5:in' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in require' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:inblock in require' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in block in load_dependency' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:innew_constants_in' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in load_dependency' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:inrequire' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:83:in require_environment!' from /Users/bashar/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/railties-3.1.3/lib/rails/commands.rb:39:in' from script/rails:6:in require' from script/rails:6:in'  ~/rails-projects/my-project/ [master]

I'm using Rails 3.1.3 Mongo 1.6.2 Mongoid 2.4.9 MongoDB version 2.0.2

Any idea?

rubish rubish · Accepted Answer · 2012-05-09T10:04:33

You config file should look like following:

production:
  hosts:
    - <%= ENV['MONGO_URL1'] %>:<%= ENV['MONGO_PORT'] %>
    - <%= ENV['MONGO_URL2'] %>:<%= ENV['MONGO_PORT'] %>
  read: :secondary
  username: <%= ENV['MONGO_USERNAME'] %>
  password: <%= ENV['MONGO_PASSWORD'] %>
  database: <%= ENV['MONGO_DATABASE'] %>
  max_retries_on_connection_failure: 10

It would resolved to be:

hosts: [ 'host1:port1', 'host2:port2']

You need double array when giving host and port as two different things:

hosts: [ ['host1', 'port1'], ['host2', 'port2'] ]

Mongoid Replication Config causing ArgumentError

1 Answers