you can modify it for setting up your own configuration.
hydrapwk@hydrapwk:~$ sudo systemctl start opensearch-dashboard.sevice
# or
hydrapwk@hydrapwk:~$ sudo opensearch-dashboard-start
# Stopping opensearch
hydrapwk@hydrapwk:~$ sudo systemctl stop opensearch-dashboard.sevice
# or
hydrapwk@hydrapwk:~$ sudo opensearch-dashboard-stop