how to set mongod --dbpath

Question

very new to mongodb and databases in general  whenever i run mongo i receive this error message    8203   8203   8203   MongoDB shell version  2 4 9 connecting to  test Thu Jan 30 13 03 33 170 Error  couldn t connect to server 127 0 0 1 27017  at src mongo shell mongo js 145 exception  connect failed   running mongod i see this   Thu Jan 30 13 13 36 588  initandlisten  MongoDB starting   pid 29408 port 27017 dbpath  usr local var mongodb 64-bit host Kimis-MacBook-Air-2 local Thu Jan 30 13 13 36 588  initandlisten   Thu Jan 30 13 13 36 588  initandlisten     WARNING  soft rlimits too low  Number of files is 256  should be at least 1000 Thu Jan 30 13 13 36 588  initandlisten  db version v2 4 9 Thu Jan 30 13 13 36 588  initandlisten  git version  nogitversion Thu Jan 30 13 13 36 588  initandlisten  build info  Darwin minilionvm local 11 4 2 Darwin Kernel Version 11 4 2  Thu Aug 23 16 25 48 PDT 2012  root xnu-1699 32 7 1 RELEASE X86 64 x86 64 BOOST LIB VERSION 1 49 Thu Jan 30 13 13 36 588  initandlisten  allocator  tcmalloc Thu Jan 30 13 13 36 588  initandlisten  options    bind ip   127 0 0 1   config    usr local etc mongod conf   dbpath    usr local var mongodb    Thu Jan 30 13 13 36 591  initandlisten  journal dir  usr local var mongodb journal Thu Jan 30 13 13 36 591  initandlisten  recover begin Thu Jan 30 13 13 36 591  initandlisten  recover lsn  108155770 Thu Jan 30 13 13 36 591  initandlisten  recover  usr local var mongodb journal j  0 Thu Jan 30 13 13 36 591  initandlisten  journal file version number mismatch got 4147 expected 4149  if you have just upgraded  recover with old version of mongod  terminate cleanly  then upgrade  Thu Jan 30 13 13 36 592  initandlisten  dbexception during recovery  13536 journal version number mismatch 16711 Thu Jan 30 13 13 36 592  initandlisten  exception in initAndListen  13536 journal version number mismatch 16711  terminating Thu Jan 30 13 13 36 592 dbexit   Thu Jan 30 13 13 36 592  initandlisten  shutdown  going to close listening sockets    Thu Jan 30 13 13 36 592  initandlisten  shutdown  going to flush diaglog    Thu Jan 30 13 13 36 592  initandlisten  shutdown  going to close sockets    Thu Jan 30 13 13 36 592  initandlisten  shutdown  waiting for fs preallocator    Thu Jan 30 13 13 36 592  initandlisten  shutdown  lock for final commit    Thu Jan 30 13 13 36 592  initandlisten  shutdown  final commit    Thu Jan 30 13 13 36 592  initandlisten  shutdown  closing all files    Thu Jan 30 13 13 36 592  initandlisten  closeAllFiles   finished Thu Jan 30 13 13 36 592  initandlisten  shutdown  removing fs lock    Thu Jan 30 13 13 36 592 dbexit  really exiting now   when i manually set my mongo dpath to mongod --dbpath  data db  as should be the default on installation  and keep it running in terminal everything runs fine  but once i close it  everything breaks again  my question is    why is my dbpath set to  usr local var mongodb  how do i fix this error so mongo works on my machine    i m assuming i either need to permanently set the dbpath to  data db or reconfigure something so it works with the dbpath as  usr local var mongodb  i fairly new to unix commands as well so not entirely sure how to fix this error   thank you for any suggestions   so  digging through the mongodb documentation i read this    Unless specified  mongod will look for data files in the default  data db directory   Windows systems use the  data db directory   If you installed using a package management system  Check the  etc mongodb conf file provided by your packages to see the configuration of the dbpath    when i took a look at the files within  etc  there is no mongodb conf file    however  i do see  usr local etc mongod conf    so if i understand this correctly  i should create a file called   etc mongodb conf and set the dbpath to  data db   do i need to delete the stuff within  usr local  as well   i think this has something to do with how my PATH are setup    could someone explain to me how to fix this in unix so i won t have this problem   thanks again

User · Answer

You can use --dbpath flag in order to provide it with the parameters i e  the directory address  I found it useful for Windows 10 OS    With the default settings it is usually not required

User · Answer

Scenario  MongoDB version v4 0 9     Set custom folder with name  myCustomDatabases   where to store databases  In custom folder with name  myCustomDatabases   have to create database  with name  newDb     Resolve    Create custom folder with name  myCustomDatabases    D  gt md myCustomDatabases  Run  mongod --dbpath  with path to custom folder with name  myCustomDatabases    mongod --dbpath  D  myCustomDatabases   From another  cmd  run  mongo    D  gt mongo   3 1  Show all databases  stored in custom folder with name  myCustomDatabases     gt show dbs admin   0 000GB config  0 000GB local   0 000GB   3 2  Use database with name newDb    gt  use newDb switched to db newDb   3 3  Show all databases  stored in custom folder with name  myCustomDatabases     gt show dbs admin   0 000GB config  0 000GB local   0 000GB       Noticed  that newDb is NOT in the list      3 4  Have to create a collection with a document       which will create the database newDb    gt  db Cats insert  name   Leo    WriteResult    nInserted    1      The insert  name   Leo    operation creates  the database newDB and the collection Cats  because they do not exist   3 5  Now the new created database newDb will be displayed in the list    gt  show dbs admin   0 000GB config  0 000GB local   0 000GB newDb   0 000GB   3 6  Now in custom folder D  myCustomDatabases  have database newDb

User · Answer

very simple   sudo chown mongodb mongodb  var lib mongodb mongod lock

User · Answer

Windows environment  local machine  I had an error   js  Error  couldn t connect to server 127 0 0 1 27017  connection attempt failed  SocketException   Error connecting to 127 0 0 1 27017    caused by     No connection could be made because the target machine actively refused it      After some back and forth attempts I decided    to check Windows  Task Manager   I noticed that MongoDB process is stopped  I made it run  Everything starts working as expected

User · Answer

sudo mongod --dbpath   data   This made it work for me

User · Answer

You can set dbPath in the mongodb conf file   storage      dbPath    path to your database data db    It s a YAML-based configuration file format  since Mongodb 2 6 version   so pay attention no tabs only spaces  and space after       usually this file located in the  nix systems here   etc mongodb conf  So then just run     mongod -f  etc mongodb conf   And mongod process will start      on the Windows something like    gt  C  MongoDB bin mongod exe -f C  MongoDB mongod conf

User · Answer

mongod  --port portnumber --dbpath  path to your folder   By default portnumber is 27017 and path is  var lib mongodb  You can set your own port number and path where you want to keep all your database

User · Answer

Create a directory db in home  inside db another directory data  cd  mkdir db cd db mkdir data   then type this command--   mongod --dbpath   db data

User · Answer

First you will have a config file in  etc mongodb conf  therefore this sounds like a homebrew install which will use some more standardized paths  The whole  data db  thing is referenced in a lot of manual install documentation   So basically from your log the server is not running  it s shutting down  so there is nothing for the shell to connect to  Seems like you have had some unclean shutdowns restarts which has led to the inconsistency   Clear the files in the journal  usr local var mongodb journal  on your config   Also   sudo rm  var lib mongodb mongod lock   Just in case  even though that part looks clean  And then restart

User · Answer

For me it must have   mongod --dbpath  whatever data path

User · Answer

You could also configure mongod to run on start up so that it is automatically running on start up and the dbpath is set upon configuration  To do this try       mongod --smallfiles --config  etc mongod conf   The --smallfiles tag is there in case you get an error with size  It is  of course  optional  Doing this should solve your problem while also automating your mongodb setup

User · Answer

Have only tried this on Mac    Create a data directory in the root folder of your app cd into your wherever you placed your mongo directory when you installed it run this command   mongod --dbpath   path to your app data   You should be good to go

[mongodb] how to set mongod --dbpath

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