Couldn't connect to server 127.0.0.1:27017 connection attempt failed MongoDB

Question

I am working on Ubuntu OS 16.04. I am starting mongodb using commands:: sudo service mongod start and then mongo

It generated this error for m

Answer 1

This worked for me (MAC):

Step 1 : Check the status if MongoDB is running or not

brew services list | grep mongo

Step 2 : if you get something like :

Name           Status  User    Plist
mongodb        stopped

Step 3: : start the service:

brew services start mongodb 

else :

if you get like this after step 2:

Name           Status  User    Plist
mongodb        started u1 /Users/u1/Library/LaunchAgents/homebrew.mxcl.mongodb.plist

then it is already running then you can restart your service by

brew services restart mongodb