MongoDB service autostart failed on Ubuntu 18.04

Ops and Admin
1

Hi All,

We have install mongodb in Ubuntu 18.04 LTS. The system was working fine. mongodb service was auto started during reboot.

We ran
sudo mongod --repair , After this the mongod service is not autostarting and

  1. sudo systemctl enable mongod
  2. sudo systemctl start mongod is not working
    But When I execute sudo mongod --config /etc/mongodb.conf, Mongo db works well.

We want to autostart mongodb using systemctl. Kindly guide me to fix the auto start issue.

Regards,
Bala