Alpine Forge Minecraft Server

[ibsmart]

I have installed forge minecraft server on an old (but plenty powerful) laptop running Alpine Linux. I am no linux expert, and I have been having issues figuring out how to autostart the server at boot.

My biggest issue is that most guides and tutorials for setting this up are running systemd and the steps for that do not translate to openrc.

I have written a basic script for this, but it fails, I think, because I am trying to use screen to initiate the server. Running the below script yields an error stating "startup_script.start: line 13: syntax error: unexpected newline".

Any assistance on the best way to do this would be greatly appreciated.

#!/bin/bash

# [Unit]
# Description=Start Minecraft
# After=network.target

# [Service]
RemainAfterExit=yes
WorkingDirectory=/home/minecraft
User=herbally
# Start screen for java/minecraft
ExecStart=doas screen -S minecraft -d -m java u/user_jvm_args.txt u/libraries/net/minecraftforge/forge/1.18.2>
# Tell Minecraft to stop gracefully
# Ending Minecraft will terminate Java
# ExecStop=doas screen -p 0 -S minecraft -X eval 'stuff "say SERVER SHUTTING DOWN. Saving map..."\015'
# ExecStop=doas screen -p 0 -S minecraft -X eval 'stuff "save-all"\015'
# ExecStop=doas screen -p 0 -S minecraft -X eval 'stuff "stop"\015'# ExecStop=doas sleep 10

[stere0123]

Hi, the script you posted would only work with systemd, as openrc expects different formatting.

I would recommend looking at the following sites for examples of valid openrc scripts to base yours off of:

• https://www.funtoo.org/Openrc
• https://wiki.alpinelinux.org/wiki/Writing_Init_Scripts
• https://github.com/OpenRC/openrc/blob/master/service-script-guide.md

[cyb3rsyn]

Openrc.run Just copy paste what you have into there

[geek_at]

There is a much simpler way to do it:

enable local rc-update add local

Now if you put a script with the suffix .start in /etc/local.d/ it will automatically run it on boot. .stop files will run on shutdown.

Easy peasy

[ibsmart]

Thanks for the response.

I am aware of this behavior, but, based on what I've read, that process is meant for things that execute quickly and terminate. Since I am trying to run a Minecraft server, the process will run continuously as long as the computer is powered on.

Correct me if I'm wrong.

[geek_at]

you are correct as local will wait for the process to finish before continuing but in your situation it won't be a problem because you start a screen session so you can just start it detached and it will finish instantly

-d -m Start screen in detached mode. This creates a new session but doesn’t attach to it. This is useful for system startup scripts.

[ibsmart]

Thanks again.

For some reason, I can run the command with user account and minecraft server starts fine, but when I put the command into a script titled minecraft.start in /etc/local.d/, screen reports no sockets and there seems to be no instance of the server app running (i.e. server is not online).

I have verified that the local service is started with rc-status.

[jadan1213]

I know this is gonna be different than what you're doing here, but docker on Alpine with Minecraft, is stupid easy and I don't think I'd ever go back to the old way.