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Home/ Questions/Q 7401653
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Editorial Team
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Editorial Team
Asked: May 29, 20262026-05-29T04:31:49+00:00 2026-05-29T04:31:49+00:00

I’m running a rails application on EC2, and I’m using mongoHQ as DBMS. I’ve

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I’m running a rails application on EC2, and I’m using mongoHQ as DBMS. I’ve specified following values in mongoid.yml

defaults: &defaults
host: staff.mongohq.com
port: 10082
username: CodeMaster123
password: 00000000

development:
<<: *defaults
database: app-development

test:
<<: *defaults
database: app-box-test

But when I execute rails s it throws an error saying

/home/ubuntu/.rvm/gems/ruby-1.9.2-p290/gems/mongo-1.4.0/lib/mongo/connection.rb:
526:in `connect': Failed to connect to a master node at localhost:27017(Mongo::ConnectionFailure)

Is there a way to check whether mongoid is reading mongoid.yml?

Edit:

If I use wrong port number then it show an error

Failed to connect to a master node at spd.mongohq.com:10092 (Mongo::ConnectionFailure)

It means that it ignore the the connection options specified in mongoid.yml and connects to localhost:27017. Why is it happening?

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  1. Editorial Team
    Editorial Team
    2026-05-29T04:31:51+00:00Added an answer on May 29, 2026 at 4:31 am

    There were two files specifying DBMS details, I edited them and my application worked fine.

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