couldn't connect to server 127.0.0.1 shell/mongo.js

Question

when i setup mongodb in my ubuntu , i try : ./mongo it show this error :

 couldn\'t connect to server 127.0.0.1 shell/mongo.js

so what can

Answer 1

First you have to make sure that all the files and directories in your /var/lib/mongodb/ folder (or whichever folder dbpath points to) belong to the mongodb user and mongodb group.

cd /var/lib/mongodb/
sudo chown mongodb filename.*
sudo chgrp mongodb filename.*
sudo chown -R mongodb directory
sudo chgrp -R mongodb directory

(Replace filename and directory with their respective names)

Then you can remove the lock, repair the database and restart the daemon as other people already mentioned:

sudo rm /var/lib/mongodb/mongod.lock   
sudo -u mongodb mongod -f /etc/mongodb.conf --repair 
sudo service mongodb start