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

In my case:

First I open config file

sudo vi /etc/mongodb.conf

Comment IP and Port like this

#bind_ip = 127.0.0.1
#port = 27017

Then restart mongodb

sudo service mongodb restart
sudo service mongod restart

Finally, it's work :D

finn@Finn ~ $ mongo
MongoDB shell version: 2.4.9
connecting to: test
> exit

Answer 2

This error is what you would see if the mongo shell was not able to talk to the mongod server.

This could be because the address was wrong (host or IP) or that it was not running. One thing to note is the log trace provided does not cover the "Fri Nov 9 16:44:06" of your mongo timestamp.

Can you:

1. Provide the command line arguments (if any) used to start your mongod process
2. Provide the log file activity from the mongod startup as well as logs during the mongo shell startup attempt?
3. Confirm that your mongod process is being started on the same machine as the mongo shell?

Answer 3

I also have the same problem then I got fixed by these two lines of code. Hope, it helps

systemctl start mongod
systemctl enable mongod

Answer 4

I face same issue after searching a lot I solve this by following :

sudo service mongodb stop 

sudo rm /var/lib/mongodb/mongod.lock 

sudo mongod --repair --dbpath /var/lib/mongodb 

sudo mongod --fork --logpath /var/lib/mongodb/mongodb.log --dbpath /var/lib/mongodb 

sudo service mongodb start

Answer 5

Create the folder C:data/db if it doesn't already exist on your computer. Turns out MongoDB requires the existence of this folder structure 'data/db' to run. I hope this helps someone.

Answer 6

A little to late with the answer but I've encountered the same issue

Following are the steps which helped me.

1. Go to C:\
2. Create "data" folder
3. In "data" create "db" folder
4. open terminal (CMD) -> go to EX:"c:\MongoDB\Server\3.4\bin"
5. type in mongod => this will start mongo server (leave it opened)

Run using a GUI, EX "robomongo"

Or

open new terminal (CMD) -> go to EX:"c:\MongoDB\Server\3.4\bin" type in "mongo" command