mongo shell working in UBUNTU but 'mongod start' doesn't work? - mongodb

Question

command mongo gives the interactive shell on command but when this command is executed as sudo systemctl enable mongod.service, it gives following output.
Failed to enable unit: Unit file mongod.service does not exist.
I am using ubuntu 17 machine.
also sudo systemctl start mongodb doesn't give any output.
on running sudo service mongodb status
it gives output as
● mongodb.service - An object/document-oriented database
Loaded: loaded (/lib/systemd/system/mongodb.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Thu 2018-02-15 23:08:02 IST; 1min 37s ago
Docs: man:mongod(1)
Process: 19137 ExecStart=/usr/bin/mongod --unixSocketPrefix=${SOCKETPATH} --config ${CONF} $DAEMON_OPTS (code=exited, status=100)
Main PID: 19137 (code=exited, status=100)
Feb 15 23:08:02 gd systemd[1]: Started An object/document-oriented database.
Feb 15 23:08:02 gd systemd[1]: mongodb.service: Main process exited, code=exited, status=100/n/a
Feb 15 23:08:02 gd systemd[1]: mongodb.service: Unit entered failed state.
Feb 15 23:08:02 gd systemd[1]: mongodb.service: Failed with result 'exit-code'.
how can I solve this problem?

Answer 1

Your mongo service is called mongodb, pretty sure it should called mongod like you tried! Similar question here.
If your service is called mongodb you could so try:
sudo systemctl enable mongodb.service
When starting a service it wont give you any output and just returns back to the prompt. You can use systemctl status like you’ve done or you look st journalctl
If you’re using systemctl then you can check the service status by running:
sudo systemctl status mongodb.service