Mongo cant start service

Posted April 5, 2017 140.5k views
MongoDBUbuntu 16.04

I reinstalle dmongo following this tutorial but this is the result of sudo systemctl status mongodb

● mongodb.service - High-performance, schema-free document-oriented database
   Loaded: loaded (/etc/systemd/system/mongodb.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2017-04-05 16:31:03 UTC; 6s ago
  Process: 14024 ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf (code=exited, status=1/FAILURE)
 Main PID: 14024 (code=exited, status=1/FAILURE)

Apr 05 16:31:02 nodejs-512mb-fra1-01 systemd[1]: Started High-performance, schema-free document-oriented database.
Apr 05 16:31:03 nodejs-512mb-fra1-01 mongod[14024]: error command line: unrecognized line in 'storage:'
Apr 05 16:31:03 nodejs-512mb-fra1-01 mongod[14024]: use --help for help
Apr 05 16:31:03 nodejs-512mb-fra1-01 systemd[1]: mongodb.service: Main process exited, code=exited, status=1/FAILURE
Apr 05 16:31:03 nodejs-512mb-fra1-01 systemd[1]: mongodb.service: Unit entered failed state.
Apr 05 16:31:03 nodejs-512mb-fra1-01 systemd[1]: mongodb.service: Failed with result 'exit-code'
1 comment

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Submit an Answer
5 answers

That is because the permission setting on /var/lib/mongodb and /tmp/mongodb-27017.lock are wrong. You will have to change the owner to monogdb user.

chown -R mongodb:mongodb /var/lib/mongodb
chown mongodb:mongodb /tmp/mongodb-27017.sock
  • This worked for me after reinstalling mongodb. I have created manually

    sudo mkdir /var/lib/mongodb
    sudo mkdir /var/log/mongodb

    and changed owner for both

    sudo chown -R mongodb:mongodb /var/lib/mongodb
    chown -R mongodb:mongodb /var/log/mongodb
    • In my case, my vps server space gone exceeded,
      so I have cleared storage and also executed the above chown command, then start mongod.
      And it’s working!!!

  • I had the same problem in Manjaro and these commands worked.

$ sudo rm -rf /tmp/mongodb-27017.sock
$ sudo service mongod start

Hi @tamburrinipietro89

The error is error command line: unrecognized line in 'storage:'

Can you post your /etc/systemd/system/mongodb.service and /etc/mongod.conf since one of them must have a reference to storage:


Description=High-performance, schema-free document-oriented database

ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf



# mongod.conf

# for documentation of all options, see:

# Where and how to store data.
  dbPath: /var/lib/mongodb
    enabled: true
#  engine:
#  mmapv1:
#  wiredTiger:

# where to write logging data.
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log

# network interfaces
  port: 27017






## Enterprise-Only Options:



There’s a mongod.log file but it only say things about data received qhen the db was working. Anyway i once runned it with sudo wich isn’t a good practice, can be that i introduced some locks or things like that? I tried to uninstall and make a fresh install but nothin. Is there a way to remove mongodb and everything like it was never installed? Im yelling angains the terminal since a week or two