Main PID: 14970 (code=exited, status=100) mongodb code example
Example: ExecStart=/usr/bin/mongod --quiet --config /etc/init/mongod.conf (code=exited, status=100)
cd /var/lib/mongodb
sudo chown -R mongodb:mongodb *
sudo service mongod restart
cd /var/lib/mongodb
sudo chown -R mongodb:mongodb *
sudo service mongod restart