Need openvpn-install.sh bash script modification

Must know MariaDB and fully understand the OpenVPN bash script, openvpn-install.sh. Need to modify the script so that when we add/remove clients, that information is updated in a DB table. Adding -Look in the DB to see if that client ID already exists, if it does, prompt for new name -If not exist, enter client ID, NAT IP assigned, date/time and maybe some other details. Removing -Look for matching client/id in DB and remove it from the table. When the script ends, I I need to run one more command which is to copy the cert to another server. I already have that script so just need to know where/how to include this in the openvpn script so that it will run only when adding/removing clients. Table: one_vpn_client id auto increment In order to automate this, I need to be able to enter the client id as a value. Something like; [login to view URL] id If id exists, return an error 'id exists' for example, otherwise, create it.