Auto start: mongodb on ubuntu 16.x LTS

create a service script

(in this example the name of the service is Mongodb)

nano /lib/systemd/system/mongodb.service

File content should be

[Unit]
Description=MongoDB Database Service
Wants=network.target
After=network.target

[Service]
ExecStart=/usr/bin/mongod --config /etc/mongod.conf
ExecReload=/bin/kill -HUP $MAINPID
Restart=always
User=mongodb
Group=mongodb
StandardOutput=syslog
StandardError=syslog

[Install]
WantedBy=multi-user.target

Now to start mongodb:

sudo systemctl start mongodb

To stop mongodb service use:

sudo systemctl stop mongodb

To enable mongodb on startup

sudo systemctl enable mongodb.service

If you need to refresh the services use:

sudo systemctl daemon-reload

원문- stackoverflow에서 참조