DowntimeProxy

Thanks to all those who wrote the review.
As mentioned in the review, my distributed exe was diagnosed by some security software as a possible virus.
So I decided to delete the exe and distribute it as a python file.
If you use this, you need Python 2.7 or Python 3. Then install the Python library Quarry. Ask questions or ask on GitHub. Support as much as possible.
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DowntimeProxy is a standalone Minecraft server.

This software responds to the Minecraft server list. And kick the connected player. that's all.
So, This software is a very lightweight standalone server that can be running during your server downtime.
This works well with GCP f1-micro (Always free).

Configuration

[setting]
host = 0.0.0.0
port = 25565
motd = A Minecraft server\n&bDowntimeProxy
max_players = 20

[messages]
kick = Disconnect by DowntimeProxy

Source code
The source code is published on GitHub. The license is Apache License 2.0.

This software includes the Python library Quarry.