When Connected to Network Mongodb Uses my NIC Address? - mongodb

Question

I have a Grails app that I am hooking up to a MongoDB instance. In my Datasource.groovy, I have the following declared:
grails {
mongo {
host = "localhost"
port = 27017
databaseName = "mmib-mongo"
}
}
Mongo is installed and starts just fine.
The problem is that when I am connected to a network, using grails run-app logs the following exception:
Packaging Grails application.....
| Running Grails application
Configuring Spring Security Core ...
... finished configuring Spring Security Core
Configuring Spring Security LDAP ...
... finished configuring Spring Security LDAP
| Error 2012-11-19 15:42:16,428 [localhost-startStop-1] ERROR context.GrailsContextLoader - Error executing bootstraps: Error creating bean with name 'mongoDatastore': FactoryBean threw exception on object creation; nested exception is org.springframework.dao.DataAccessResourceFailureException: can't call something : MBP-C02J91TWDKQ5.local/192.168.0.131:27017/mmib-mongo; nested exception is com.mongodb.MongoException$Network: can't call something : MBP-C02J91TWDKQ5.local/192.168.0.131:27017/mmib-mongo
Message: Error creating bean with name 'mongoDatastore': FactoryBean threw exception on object creation; nested exception is org.springframework.dao.DataAccessResourceFailureException: can't call something : MBP-C02J91TWDKQ5.local*/192.168.0.131:27017/mmib-mongo*; nested exception is com.mongodb.MongoException$Network: can't call something : MBP-C02J91TWDKQ5.local/192.168.0.131:27017/mmib-mongo
Any clue why when I'm connected to a network, Grails/Mongo wants to use that IP Address instead of localhost, which I verified is 127.0.0.1 in /etc/hosts

Answer 1

Homebrew tells MongoDB to listen on only on 127.0.0.1, not your public interface or a ".local" hostname:
https://github.com/mxcl/homebrew/blob/master/Library/Formula/mongodb.rb#L95
Try deleting the bind_ip line from your local copy of mongod.conf and simply protecting port 27017 with a firewall, or else change the "bind_ip" entry in mongod.conf.