WireGuard/AmneziaWG server auto-switch script (for Linux)

[zimbabwe 19]

Here is the script/systemd service that I use on my own home server:
https://github.com/zimbabwe303/WireGuard-rotate-AirVPN

By default it is set up for use with AmneziaWG but it is very easy to switch to the standard WireGuard client, just change the following variables at the beginning of wg_rotate.sh:

wg_quick=wg-quick
wg=wg
amnezia_ENABLE=0

Basically it is able to go through a randomized list of servers completely automatically, either by timer or by an external trigger (the trigger is a file created either manually or by a cronjob). It connects to a server, tests the connectivity and moves to another one if this one is down or unstable. You don't need to create the full list of servers yourself, just the short list with wildcards (e.g. AirVPN_wg/AirVPN_AT-*_UDP-47107*.conf).