[Centos] how to restart services on failure

You just need to add these two lines to the .service file. Under the [Service] section in the file you must add the following 2 lines:

Restart=always
RestartSec=3

After saving the file we need to reload the daemon configurations to ensure systemd is aware of the new file

systemctl daemon-reload

Then restart the service to enable the changes.

systemctl restart yourservicename