Saving memory with my friend, and my server experiment for open Minecraft server in some day.
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pick your server (VM mostly) and choose about 4 to 8 Gbs Ram server
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set up network security by adding port 25565 (Minecraft server default port)
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remote to the VM and install java SDK 17
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clone this repo
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change the directory to the repo and run the command "java -jar purpur.jar --nogui."
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give public IPv4 to your friend and let's play!!
my personal recommendation is Azure Virtual machine 8 Gbs and picks the nearest region of your (I choose Singapore)
Now it on 1.20.1 Purpur server launcher
java -Xms4G -Xmx4G -jar purpur.jar --nogui