fix-mongodb-common-errors-ubuntu.md

Fix MongoDB Common Errors on Ubuntu

Failed to Unlink Socket mongodb-27017.sock.

Error message : Failed to unlink socket file /tmp/mongodb-27017.sock Operation not permitted.

• Remove mongodb-27017.sock and reload mongod.

  $ sudo rm -rf /tmp/mongodb-27017.sock
  $ ls -lsah /tmp/mongodb-27017.sock  
  $ sudo systemctl restart mongod

  and/or if that doesn't work you can do as below.

• Add owner to mongodb-27017.sock.

  $ sudo chown -R $USER /tmp/mongodb-27017.sock
  $ sudo systemctl restart mongod

  and/or if that doesn't work you can do as below.

• Run mongod with sudo.

  $ sudo mongod

Attempted to create a lock file on a read-only directory: /data/db.

Error message : exception in initAndListen: IllegalOperation: Attempted to create a lock file on a read-only directory: /data/db, terminating.

• Create folder /data/db and add owner.

  $ sudo mkdir /data/db
  $ sudo chown -R $USER /data/db 
  $ sudo systemctl restart mongod