How can I avoid this warning?

This warning repeatedly will occurs.

/usr/local/lib/ruby/gems/1.9.1/gems/mongo-1.2.4/lib/mongo/connection.rb:469:in
`connect': Failed to connect to a master node at localhost:27017
(Mongo::ConnectionFailure)

    Someone explain for this warning.Example:require rubygems and
require mongodb. But again re-install rubygems and mongodb, cant get the
solutions.So,Please anyone explain this warning.

Thanks and Regards....

It is saying that mongo does not appear to be running or at least it
is not running on the machine that your script is running on or is not
running on port 27017.

Are you running mongo on your machine? It is just the same as running
MySQL or PostgreSQL in that it is an independent service. Unlike
SQLite.

Peter Hickman wrote in post #999006:

It is saying that mongo does not appear to be running or at least it
is not running on the machine that your script is running on or is not
running on port 27017.

Are you running mongo on your machine? It is just the same as running
MySQL or PostgreSQL in that it is an independent service. Unlike
SQLite.

Thanks! It helped me too.