linux - Connection refused to MongoDB errno 111

Question

I have a Linode server running Ubuntu 12.04 LTS and MongoDB instance (service is running and CAN connect locally) that I can't connect to from an outside source.

I have added these two rules to my IP tables, where < ip address > is the server I want to connect FROM (as outlined in this MongoDB reference):

iptables -A INPUT -s < ip-address > -p tcp --destination-port 27017 -m state --state NEW,ESTABLISHED -j ACCEPT

iptables -A OUTPUT -d < ip-address > -p tcp --source-port 27017 -m state --state ESTABLISHED -j ACCEPT

And I see the rule in my IP table allowing connections on 27017 to and from < ip address > however when I try to connect from , < ip address > to my mongo database using a command like this:

mongo databasedomain/databasename -u username -p password

I get this error:

2014-07-22T23:54:03.093+0000 warning: Failed to connect to databaseserverip:27017, reason: errno:111 Connection refused 2014-07-22T23:54:03.094+0000 Error: couldn't connect to server < ip address >:27017 (databaseserverip), connection attempt failed at src/mongo/shell/mongo.js:148 exception: connect failed

Any help is VERY APPRECIATED!!!! Thanks!!!

Answer 1

Thanks for the help everyone!

Turns out that it was an iptable conflict. Two rules listing the port open (which resulted in a closed port).

However, one of the comments by aka and another by manu2013 were problems that I would have run into, if not for the conflict.

So! Always remember to edit the /etc/mongod.conf file and set your bind_ip = 0.0.0.0 in order to make connections externally.

Also, make sure that you don't have conflicting rules in your iptable for the port mongo wants (see link on mongodb's site to set up your iptables properly).