Unable to connect to mongodb Error couldn t connect to server 127 0 0 1 27017 at src mongo shell mongo js L112

Question

When ever I try to connect to mongo db I always get this error as below    MongoDB shell version  2 4 3 connecting to  test Fri Apr 26 14 31 46 941 JavaScript execution failed  Error  couldn t connect to server 127 0 0 1 27017 at src mongo shell mongo js L112 exception  connect failed  I tried various solutions listed in stackoverflow and tried following commands but nothing works    1  sudo rm  var lib mongodb mongod lock      says such file located at this place    2   sudo service mongodb start       error  sudo  service  command not found  3  I ve made sure nothing else is running at that port    4  Even tried uninstalling and installing it again    5  Also tried kill pid

User · Answer

Faced same issue  my understanding is it could be wrong   1  Make sure mongodb is up and running  2  For linux access as sudo and for windows if connecting localhost turning off firewall may help but its not necessary  3  Just type mongo  it will try to connect to localhost by default  You need to specify IP if you are connecting to a remote server  By default test db will be used

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I had the same issue until i close teamviewer running on my pc  Then it worked fine

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mongod --configsvr --smallfiles --nojournal --dbpath cfg 1 --port 26052 --fork --logpath cfg 3 log  gt  dev null   Create a single mongos server on the default port  sleep 2000 mongos --configdb   HOSTNAME  26050   HOSTNAME  26051   HOSTNAME  26052 --fork --logpath mongos log  gt  dev null   Sleep for some time before starting the mongos you will not face the problem

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Quick Fix  I have the same problem to start the MongoDB and it was easily fixed by running the file mongod exe  C  Program Files MongoDB Server 3 2 bin  then run the file mongo exe  C  Program Files MongoDB Server 3 2 bin   Problem fixed

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I met with this problem too  And I figured it out by the following way   First  open the terminal and write   mongod --dbpath  your project s path    Second  open a new terminal and enter your project s path  write  mongo   Then it runs successfully

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If you create data db folder  firstly you must delete this folder then execute   c  mongodb bin mongo exe

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Mongo DB requires space to store it files  So you should create folder structure for Mongo DB before starting the Mongodb server client    for e g  MongoDb Dbfiles where Mongo DB is installed   Then in cmd promt exe mongod exe and mongo exe for client and done

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If you are on unix-like systems  Starting in MongoDB 4 4  a startup error is generated if the ulimit value for number of open files is under 64000  View the current val   ulimit -n  Change value   ulimit -n  lt val gt

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This is due to locking of Mongodb sudo rm  var lib mongodb mongod lock sudo service mongodb restart

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I am using version 4 0 6   the current release  on Linux Mint  You need to install Mongodb Compass mongodb GUI  to interact with your databases  Here is the link  https   docs mongodb com compass master install   I hope this solves your problem

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Same error here  this worked for me   sudo mongod --repair   followed by  sudo mongod    forget about service and start   Then on a different tab terminal   mongo

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I had the same issue  In my case there was a mismatch of ipaddress in mongo config     mongo MongoDB shell version  2 6 7 connecting to  test 2015-02-02T17 48 52 302 0530 warning  Failed to connect to 127 0 0 1 27017  reason  errno 111 Connection refused 2015-02-02T17 48 52 303 0530 Error  couldn t connect to server 127 0 0 1 27017  127 0 0 1   connection attempt failed at src mongo shell mongo js 146 exception  connect failed   When I checked my configuration file  I have specified the bind address to eth0 ip 10 8 10 111  not loopback address 127 0 0 1   So I have changed the ip address to loopback as like bind ip   127 0 0 1 in  etc mongod conf file and restart it with service mongod restart  finally works    mongo  MongoDB shell version  2 6 7 connecting to  test  gt

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If any one is facing the problem in windows machine then follow the steps    Add the path of mongodb in the environmental variable  Create a directory C  Data db  Open a terminal cmd  and write mongod   it will initiate the server   Open another terminal and write your own code

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First start mongod service then mongo or mongos

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with new version of mongodb  this issue got resolved

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Start mongod server first  mongod   Open another terminal window  Start mongo shell  mongo

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Please Start the MongoDB server first and try to connect   Pre-requisite   Create space for storing DB and tables in any directory Example  windows   D  mongodbdata   Steps    Start server     mongod --port 5000 --dbpath D  mongodbdata     please mention above created path   Connect mongodb server  Run in another terminal console      mongo --port 5000

[mongodb] Unable to connect to mongodb Error: couldn't connect to server 127.0.0.1:27017 at src/mongo/shell/mongo.js:L112

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