Failed to connect to 127 0 0 1 27017 reason errno 111 Connection refused

Question

while trying this mongo command in ubuntu I am getting this error       ritzysystem ritzysystem-Satellite-L55-A    mongo     MongoDB shell version  2 6 1     connecting to  test     2014-10-06T12 59 35 802 0530 warning  Failed to connect to 127 0 0 1 27017  reason  errno 111 Connection refused     2014-10-06T12 59 35 802 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   how can I rectify this is anyone had the same problem

User · Answer

I had the same problem on Mac OS Try to run sudo mongod and in a new terminal tab run mongo

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Mongo 3     - OSX - 2017  From README  RUNNING   Change directory to mongodb-osx-x86 64-3     bin  To run a single server database     mkdir  data db     mongod   Go to new Terminal       The mongo javascript shell connects to localhost and test database      by default -Run the following command in new terminal     mongo   gt  help

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For those with Windows  I had the same problem on Windows  Restarting Mongodb service solves this  Following are the steps to restart on Windows  i   Go To  quot Services quot  on Windows  ii   Search for  quot MongoDB quot  in the list of services  iii   Right click  quot start quot   quot restart quot  depending on your status  iv   After the status turns to  quot running quot  check if issue is resolved by running  quot Mongo quot  or connecting your Mongo client

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is very simple  only delete a file  var lib mongodb mongodb lock  after only execute  mongo  finished

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There are changes in mongod conf file in the latest MongoDB v 3 6 5   Here is how I fixed this issue on mac os High Sierra v 10 12 3 Note  I assume that you have installed upgrade MongoDB using homebrew  mongo --version  MongoDB shell version v3 6 5  git version  a20ecd3e3a174162052ff99913bc2ca9a839d618  OpenSSL version  OpenSSL 1 0 2o  27 Mar 2018  allocator  system modules  none build environment  distarch  x86 64 target arch  x86 64   find mongod conf file  sudo find   -name mongod conf      usr local etc mongod conf  gt  first result     open mongod conf file sudo vi  usr local etc mongod conf   edit in the file for remote access under net  section  port  27017    bindIpAll  true    bindIp  127 0 0 1    comment this out   restart mongodb if you have installed using brew than brew services stop mongodb  brew services start mongodb    otherwise  kill the process     sudo kill -9  lt procssID gt

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I have the same error with you  this is my case      mongod 2018-07-15T05 27 08 265 0000 I JOURNAL   initandlisten  journal dir  data db journal 2018-07-15T05 27 08 265 0000 I JOURNAL   initandlisten  recover   no journal files present  no recovery needed 2018-07-15T05 27 08 301 0000 I JOURNAL   durability  Durability thread started 2018-07-15T05 27 08 301 0000 I JOURNAL   journal writer  Journal writer thread started 2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten  MongoDB starting   pid 26796 port 27017 dbpath  data db 64-bit host ubuntu-s-2vcpu-4gb-sfo2-01 2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten     WARNING  You are running this process as the root user  which is not recommended  2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten   2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten   2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten     WARNING   sys kernel mm transparent hugepage defrag is  always   2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten            We suggest setting it to  never  2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten   2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten  db version v3 0 6 2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten  git version  1ef45a23a4c5e3480ac919b28afcba3c615488f2 2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten  build info  Linux build6 ny cbi 10gen cc 2 6 32-431 3 1 el6 x86 64  1 SMP Fri Jan 3 21 39 27 UTC 2014 x86 64 BOOST LIB VERSION 1 49 2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten  allocator  tcmalloc 2018-07-15T05 27 08 302 0000 I CONTROL   initandlisten  options     2018-07-15T05 27 08 308 0000 I NETWORK   initandlisten  waiting for connections on port 27017   I type mongod to start the server  and I type control   c to exit to shell  then I type mongo and I got     mongo MongoDB shell version  3 0 6 connecting to  test 2018-07-15T05 05 02 738 0000 W NETWORK  Failed to connect to 127 0 0 1 27017  reason  errno 111 Connection refused 2018-07-15T05 05 02 739 0000 E QUERY    Error  couldn t connect to server 127 0 0 1 27017  127 0 0 1   connection attempt failed     at connect  src mongo shell mongo js 179 14      at  connect  1 6 at src mongo shell mongo js 179   As you can see  my error info is same with you   This is case mongod doesn t start with backend process  when I type control   c I quit mongod   We can add --fork args to make the process daemon process      mongod --logpath  usr local mongodb log txt --fork   you have to set --logpath if you want to use --fork  then you will success to connect to mongo

User · Answer

For macOS many of the answers are already outdated according to official docs  Somehow the brew has changed and how we should install MongoDB  firstly uninstall it from your macOS  even though it might be not necessary  and then install it using these steps   brew tap mongodb brew brew install mongodb-community 4 4 brew services start mongodb-community 4 4  Watch out for the 4 4 part  it ll change  If in the future it would break then refer to the official docs and install the version  which is suggested in the linked tutorial

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In my case the error was due to missing  data db folder which the mongodb uses to store your  data  Please type this command  sudo mongod  in your terminal  If the error message is something like    missing data db folder error  Simply create the folder and you are good to go

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Follow this simple steps   Works on MAC OS too    Open terminal and run sudo mongod Open a new terminal tab Don t close step 1 tab  and run sudo mongo   That s all

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In my case bind ip was not 127 0 0 1 in  etc mongodb conf file so change bind ip to 127 0 0 1 it may be comma separated values so make sure 127 0 0 1 is one of them  Then restart your system to take effect  Restart only to the those who are facing    sudo service mongod restart Failed to restart mongod service  Unit mongod service not found

User · Answer

It is possible that the data directory for mongo specified in  etc mongod conf is not a valid path   Try rechecking the path if it really exists sudo vi  etc mongod conf and check dbPath

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In my case the problem was caused due to an apparent lost of permission over mongodb lock file  I could solve the problem changing the permission with the  following command    sudo chown mongodb mongodb  var lib mongodb mongodb lock   There follows my investigation

User · Answer

I faced the same problem  so please check is there mongodb folder  firstly try to remove that folder rm -rf  var lib mongodb    Now try to start mongo and if same problem then its mongodb lock file which prevent to start mongo  so please delete the mongo lock file rm  var lib mongodb mongod lock  For forcefully rm -rf  var lib mongodb mongod lock service mongodb restart if already in sudo mode otherwise you need to use like sudo service mongod start or you can start the server using fork method mongod --fork --config  etc mongod conf  and for watching the same is it forked please check using the below command ps aux   grep mongo

User · Answer

I had the same problem on my Mac  and I installed mongodb via homebrew  I solve this problem by the homebrew services command   First start mongodb service     brew services start mongodb  Start mongodb terminal    mongo  Stop mongodb service     brew services stop mongodb

User · Answer

Probably you don t have space in your hard drive  Check it by typing in the promt   df -h   Please note that mongo might fail even with 3gb available in the corresponding partition  For details  you might want to check the log  cat  var log mongodb mongod log

User · Answer

I understand the question is with regards to Ubuntu   But if you re getting the same error on a Mac and don t want   sudo mongod running on a separate tab  you can do the following to fix the connection error  if you have Homebrew -  brew services start mongodb   Based on the answer from this thread - Cannot connect to mongodb errno 61 Connection refused

User · Answer

Make sure you have run the MongoDB s Service before you want to connect the console   run and start the server     sudo mongod   then     mongo      gt

User · Answer

thank you everyone I tried running mongo it was not running finally I found there was no space in my hard disc I emptied some of the space and finally re installed it the same installation procedure as followed to install as given in mongodb docs finally restarted the server and it is running    https   docs mongodb org manual tutorial install-mongodb-on-ubuntu

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Just some thoughts on my case   If you have changed the dbPath and logPath dirs to your custom values  say  data mongodb data   data mongodb log   you must chown them to mongodb user  otherwise  the non-existent  data db  dir will be used   sudo chown -R mongodb mongodb  data mongodb   sudo service mongod restart

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I think except for disk space issuse  you should check the log in  var log mongodb to know the details for why mongodb start failed   cat  var log mongodb mongod log  2016-06-26T15 26 26 642 0800 I CONTROL   main        SERVER RESTARTED       2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  MongoDB starting   pid 8130 port 27017 dbpath  var lib mongodb 64-bit host hadoop-master 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  db version v3 2 7 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  git version  4249c1d2b5999ebbf1fdf3bc0e0e3b3ff5c0aaf2 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  OpenSSL version  OpenSSL 1 0 1f 6 Jan 2014 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  allocator  tcmalloc 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  modules  none 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  build environment  2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten      distmod  ubuntu1404 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten      distarch  x86 64 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten      target arch  x86 64 2016-06-26T15 26 26 649 0800 I CONTROL   initandlisten  options    config    etc mongod conf   net    bindIp   127 0 0 1 192 168 3 10   port  27017    storage    dbPath    var lib mongodb   journal    enabled  true      systemLog    destination   file   logAppend  true  path    var log mongodb mongod log      2016-06-26T15 26 26 678 0800 E NETWORK   initandlisten  Failed to unlink socket file  tmp mongodb-27017 sock errno 1 Operation not permitted 2016-06-26T15 26 26 678 0800 I -         initandlisten  Fatal Assertion 28578 2016-06-26T15 26 26 678 0800 I -         initandlisten       aborting after fassert   failure   So  here I need to rm all the files in the  tmp  That works fine for me

User · Answer

I solved that simply by entering sudo mongo after mongod command

User · Answer

Issue was with the connection to the database  it could be due to several reasons  For me it was low disk space on my server machine  and when mongo tries to connect it refuse because of low disk  check your server machine local storage with du -sh if you have low storage space  check your logs size and take step accordingly  issue may exist because of dbpath contradict in  etc mongod conf and server actually running dbpath with mongod If you are facing such type of issue  please check my answer in the given link below  https   stackoverflow com a 53057695 8247133

User · Answer

Do this    sudo rm  var lib mongodb mongod lock sudo service mongod restart   If you are on Ubuntu 16 04 which you can figure out by runnign this    lsb release -a   You need to Create a new file at  lib systemd system mongod service with the following contents    Unit  Description High-performance  schema-free document-oriented database After network target Documentation https   docs mongodb org manual   Service  User mongodb Group mongodb ExecStart  usr bin mongod --quiet --config  etc mongod conf   Install  WantedBy multi-user target

User · Answer

Run the following command    sudo rm  var lib mongodb mongod lock sudo service mongod restart   Connection refused to MongoDB errno 111    MacOS     rm  usr local var mongodb mongod lock   sudo service mongod restart

User · Answer

For mongo v3 6 3   or 2019 versions   rm  var lib mongodb mongod lock service mongodb restart

User · Answer

I just removed mongo following the instructions here  https   docs mongodb com manual tutorial install-mongodb-on-ubuntu  And then I installed again following the instructions in the given link  Everything worked smoothly

User · Answer

First  Start MongoDB   sudo service mongod start   Then  Run   mongo

[node.js] Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused

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