Services & Systemctl related issues & commands.txt

-->  Failed to start mongod.service: Unit mongod.service not found.  <--



> sudo systemctl daemon-reload

- Recent versions of Linux tend to use systemd (which uses the 'systemctl' command), 
  while older versions of Linux tend to use System V init (which uses the 'service' command).

- To check which init system your platform uses, run
> ps --no-headers -o comm 1

- systemd - select the systemd (systemctl)
- init    - select the System V Init (service)


- systemctl
> sudo systemctl start mongod
> sudo systemctl status mongod
> sudo systemctl enable mongod (Optional)
> sudo systemctl stop mongod
> sudo systemctl restart mongod


- service
> sudo service mongod start
> sudo service mongod status
> sudo service mongod stop
> sudo service mongod restart