Is mongodb running

Question

I have installed mongodb and the php drivers on my unix server  My question is how can I tell if mongodb is running  Is there a simple command line query to check status  If I start it once from the shell will it keep running if I exit the shell  this doesn t seem to be the case   How can I make the mongodb connection persistent and auto start on server reboot  I can run   -bash-3 2  su Password   root xxx   cd  var lib  root xxx     mongodb-linux-i686-1 6 5 bin mongod   mongodb-linux-i686-1 6 5 bin mongod --help for help and startup options Wed Feb 23 08 06 54 MongoDB starting   pid 7271 port 27017 dbpath  data db  32-bit    NOTE  when using MongoDB 32 bit  you are limited to about 2 gigabytes of data          see http   blog mongodb org post 137788967 32-bit-limitations    WARNING  You are running in OpenVZ  This is known to be broken    Wed Feb 23 08 06 54 db version v1 6 5  pdfile version 4 5 Wed Feb 23 08 06 54 git version  0eb017e9b2828155a67c5612183337b89e12e291 Wed Feb 23 08 06 54 sys info  Linux domU-12-31-39-01-70-B4 2 6 21 7-2 fc8xen  1 SMP Fri Feb 15 12 39 36 EST 2008 i686 BOOST LIB VERSION 1 37 Wed Feb 23 08 06 54  initandlisten  waiting for connections on port 27017 Wed Feb 23 08 06 54  websvr  web admin interface listening on port 28017  If I open a seperate shell I can then then connect to mongodb   -bash-3 2  cd  var lib -bash-3 2    mongodb-linux-i686-1 6 5 bin mongo MongoDB shell version  1 6 5 connecting to  test db foo find      quot  id quot    ObjectId  quot 4d63d7d3eb95985ab19c8feb quot     quot a quot    1    However if I close the initial shell I can t connect   -bash-3 2  cd  var lib -bash-3 2    mongodb-linux-i686-1 6 5 bin mongo MongoDB shell version  1 6 5 connecting to  test Wed Feb 23 08 25 10 Error  couldn t connect to server 127 0 0 1  anon  1154 exception  connect failed

User · Answer

Probably because I didn t shut down my dev server properly or a similar reason  To fix it  remove the lock and start the server with  sudo rm  var lib mongodb mongod lock   sudo start mongodb

User · Answer

On Ubuntu  doc   sudo systemctl status mongod  If running   mongod service - MongoDB Database Server      Loaded  loaded   lib systemd system mongod service  disabled  vendor preset  enabled       Active  active  running  since Wed 2020-10-14 14 13 40 UTC  3s ago        Docs  https   docs mongodb org manual    Main PID  1604  mongod       Memory  210 8M      CGroup   system slice mongod service               -1604  usr bin mongod --config  etc mongod conf  If not running   mongod service - MongoDB Database Server      Loaded  loaded   lib systemd system mongod service  disabled  vendor preset  enabled       Active  inactive  dead         Docs  https   docs mongodb org manual  To start mongodb sudo systemctl start mongod

User · Answer

I know this is for php  but I got here looking for a solution for node  Using mongoskin   mongodb admin   ping function err        if err     null             true - you got a conntion  congratulations     else if err message indexOf  failed to connect       -1             false - database isn t around     else            actual error  do something about it      With other drivers  you can attempt to make a connection and if it fails  you know the mongo server s down  Mongoskin needs to actually make some call  like ping  because it connects lazily  For php  you can use the try-to-connect method  Make a script   PHP     dbIsRunning   true try      m   new MongoClient  localhost 27017      catch  e       dbIsRunning   false

User · Answer

For quickly checking if mongodb is running  this quick nc trick will let you know   nc -zvv localhost 27017   The above command assumes that you are running it on the default port on localhost    For auto-starting it  you might want to look at this thread

User · Answer

To check current running status of mongodb use  sudo service mongodb status

User · Answer

You can use the below command  to check MongoDB status  e g  sudo service MongoDB  status which displays the status of MongoDB service as like the screenshot

User · Answer

check with either      ps -edaf   grep mongo   grep -v grep     ps  flags may differ on your OS   or       etc init d mongodb status       for MongoDB version  lt  2 6      etc init d mongod status        for MongoDB version  gt   2 6   or      service mongod status   to see if mongod is running  you need to be root to do this  or prefix everything with sudo   Please note that the  grep  command will always also show up as a separate process   check the log file  var log mongo mongo log  to see if there are any problems reported

User · Answer

this should work fine        pgrep mongod

User · Answer

Correct  closing the shell will stop MongoDB  Try using the --fork command line arg for the mongod process which makes it run as a daemon instead  I m no Unix guru  but I m sure there must be a way to then get it to auto start when the machine boots up   e g   mongod --fork --logpath  var log mongodb log --logappend   Check out the full documentation on Starting and Stopping Mongo

User · Answer

I find   ps -ax   grep mongo   To be a lot more consistent  The value returned can be used to detect how many instances of mongod there are running

[mongodb] Is mongodb running?

Examples related to mongodb

Examples related to unix

Examples related to database

Examples related to nosql