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Asked: 2026-06-10T11:08:43+00:00

I have an error that appears to be connected to these two links: https://groups.google.com/forum/#!msg/mongoid/L6ESKP8QDpg/gmEyqejdAEEJ

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I have an error that appears to be connected to these two links:

See console log below. I am running with Mongoid/MongoHQ, when I create an object (apparently any database object) I get this “need to login” error. Note however that the database object IS created and is in the database after the error.

Is there some way I can fix this myself, or perhaps it’s something that MongoHQ needs to fix?

$ heroku run console
irb(main):004:0> Request.create!(:from_user => User.first, :to_user => User.first)
Moped::Errors::OperationFailure: The operation: #<Moped::Protocol::Command
  @length=69
  @request_id=7
  @response_to=0
  @op_code=2004
  @flags=[]
  @full_collection_name="admin.$cmd"
  @skip=0
  @limit=-1
  @selector={:getlasterror=>1, :safe=>true}
  @fields=nil>
failed with error "need to login"
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:74:in `block in command'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:521:in `[]'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:521:in `block (3 levels) in flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:520:in `map'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:520:in `block (2 levels) in flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:123:in `ensure_connected'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:516:in `block in flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:531:in `logging'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:515:in `flush'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:286:in `pipeline'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/session/context.rb:58:in `block in insert'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/session/context.rb:109:in `block in with_node'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/cluster.rb:150:in `block in with_primary'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/node.rb:168:in `ensure_primary'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/cluster.rb:149:in `with_primary'
    from /app/vendor/bundle/ruby/1.9.1/gems/moped-1.2.0/lib/moped/session/context.rb:108:in `with_node'
... 13 levels...
    from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:405:in `__run_callback'
    from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:385:in `_run_save_callbacks'
    from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/callbacks.rb:100:in `run_callbacks'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/persistence/insertion.rb:23:in `prepare'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/persistence/operations/insert.rb:26:in `persist'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/persistence.rb:50:in `insert'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/persistence.rb:251:in `block in create!'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/threaded/lifecycle.rb:173:in `_creating'
    from /app/vendor/bundle/ruby/1.9.1/gems/mongoid-3.0.4/lib/mongoid/persistence.rb:249:in `create!'
    from (irb):4
    from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/commands/console.rb:47:in `start'
    from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/commands/console.rb:8:in `start'
    from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.8/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'irb(main):005:0>
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1 Answer

  1. Editorial Team

    It turns out the problem is that MongoHQ upgraded their MongoDB and it introduced an incompatibility with mongoid’s stable branch.

    Chris Winslett fixed the bug and durran pulled it into mongoid master. But it was not included in the stable branch when I posted this stackoverflow.

    Solutions:

    • I solved the problem by updating my gemfile to pull mongoid from github.
    • durran has now included it in stable-1.2.0 so you should get the fix if you gem update.
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