Central Multi-site VPN server

[FishyZA]

Allright, so i have now setup a vpn server with which i can create new users to connect to.
How would i go about setting up another server as a client, but not utilizing the new client setup.

server2server vpn tunnel, so that the 2 sites, city1 and city2 and city1 users all use a seperate running VPN service that can be individually administered and restarted if needed.

Like i have servers in city2 that needs to connect to head office in city1
later will add users for city 2, but for now just to get the different cities connected on their own tunnel

so by the way, thank you a million for this awesome script.
A little more customizability straight off the bat would be nice, but its not a train-smash :)
awesome work :)

[FishyZA]

Something to the effect of being able to do this:

systemctl start openvpn@city1 (main office) main/primary VPN server
systemctl start openvpn@city1_users (Main Office users) main office vpn users
systemctl start openvpn@city2 - connecting branch office to main office
systemctl start openvpn@city2_users (branch2 users) branch office's users connecting to vpn to be able to access work resources.

i found some half completed documentation from a place i worked at.
might have to clean it up first before putting it all here :)

I had a motd logon message showing this:
--------------------------------------
VPN Services - systemctl -a | grep vpn
--------------------------------------
HO - systemctl restart openvpn@ho - TUN0 1190
HO_Users - systemctl restart openvpn@ho_users - TUN1 1191
Branch1 - systemctl restart openvpn@branch1 - TUN2 1192
Branch2 - systemctl restart openvpn@branch1 - TUN3 1193
Branch3 - systemctl restart openvpn@branch1 - TUN5 1195
Branch4 - systemctl restart openvpn@branch1 - TUN6 1196

I am going to attempt to recreate that setup manually, it was on Centos 6.4 sadly, i'll see if i can replicate with debian 12, then use your script to see if i can do it myself. but if you have a solution before i can :), much appreciated :)