Mongodb can't connect to localhost but can connect to localhost's IP address

Question

If I try to run mongodb shell with the mongo command alone, I get:

Error: couldn\'t connect to server 127.0.0.1 shell/mongo.js:84

Answer 1

Just follow all these steps to solve this problem

Step 1: Remove lock file.
sudo rm /var/lib/mongodb/mongod.lock

Step 2: Repair mongodb.
mongod --repair 

Step 3: start mongodb.
sudo start mongodb 
or
sudo service mongodb start

Step 4: Check status of mongodb.
sudo status mongodb 
or   
sudo service mongodb status

Step 5: Start mongo console.
mongo