mongo - couldn't connect to server 127.0.0.1:27017

Question

I am coming from riak and redis where I never had an issue with this services starting, or to interact.

This is a pervasive problem with mongo and am rather clueless

Answer 1

Make sure that your mongo is running. I fixed this problem by trying to repair the mongodb, there I found that the directory required for the db to run was not created. It shows this error

Type: mongod, it will show the error

exception in initAndListen: 29 Data directory /data/db not found., terminating

Error happen because dbpath /data/db/ (default config) does not exist. You need to create data folder and set permission for it.

Then I create a folder on my system by the command

sudo mkdir -p /data/db/ and sudo chown id -u /data/db

then I run the mongo again and it worked.