Systems database can be reset using the following steps.
Step 1) change dir
Inside the LXC container (e.g. the command prompt is GREEN)
Change to the folder
/root/suricata/
Example output
root@fmadio200v4-636-suricata:~# cd /root/suricata/
root@fmadio200v4-636-suricata:~/suricata#
Step 2) reset the database
Resetting the database as follows
./reset_db
Example output is shown below
root@fmadio200v4-636-suricata:~/suricata# ./reset_db
root@fmadio200v4-636-suricata:~/suricata#
Step 3) Confirm no data
Using the grafana dashboard confirm no data is visible