This is a pair of bash scripts that can be installed on an Ubuntu server to bootstrap a working minecraft server. They are designed to be run with root permissions.
server.sh - bootstrap the creation of a service that runs the minecraft serverconsole.sh - connect to the console of a running server using screen| #!/bin/bash | |
| # | |
| # Attach to a running console on the minecraft server. | |
| # Use Ctrl+a, d to exit from the console. | |
| # | |
| MINECRAFT_USER=minecraft | |
| MINECRAFT_SCREEN=minecraft | |
| sudo -u "${MINECRAFT_USER}" screen -rx "${MINECRAFT_SCREEN}" |
| #!/bin/bash | |
| # | |
| # Based on: https://minecraft.gamepedia.com/Tutorials/Ubuntu_startup_script | |
| # For server versions, see: https://mcversions.net/ | |
| # | |
| set -ex | |
| MINECRAFT_DIR=/srv/minecraft-server | |
| MINECRAFT_USER=minecraft | |
| MINECRAFT_SERVICE=minecraft-server.service | |
| MINECRAFT_URL=https://launcher.mojang.com/v1/objects/3dc3d84a581f14691199cf6831b71ed1296a9fdf/server.jar | |
| MINECRAFT_SHA256=5ecdedab3a6e129321a444490d0a467c25ea702a24a99cebe3b6aed41f8f5729 | |
| # Create a service user to run minecraft. | |
| adduser --system --home "${MINECRAFT_DIR}" "${MINECRAFT_USER}" | |
| addgroup --system "${MINECRAFT_USER}" | |
| adduser "${MINECRAFT_USER}" "${MINECRAFT_USER}" | |
| mkdir -p "${MINECRAFT_DIR}" | |
| chown -R "${MINECRAFT_USER}:${MINECRAFT_USER}" "${MINECRAFT_DIR}" | |
| # Install required dependencies | |
| apt-get update -qq | |
| apt-get install -qq openjdk-8-jdk-headless | |
| # Download the minecraft server installation and accept the EULA. | |
| wget -O "${MINECRAFT_DIR}/server.jar" "${MINECRAFT_URL}" | |
| (echo "${MINECRAFT_SHA256} ${MINECRAFT_DIR}/server.jar" | sha256sum --check) || (echo "SHA MISMATCH - Download was corrupt!" && false) | |
| cat <<EOF > "${MINECRAFT_DIR}/eula.txt" | |
| eula=true | |
| EOF | |
| # Set up the initial server properties. | |
| cat <<EOF > "${MINECRAFT_DIR}/server.properties" | |
| #Minecraft server properties | |
| #Sat Mar 28 06:50:21 UTC 2020 | |
| spawn-protection=16 | |
| max-tick-time=60000 | |
| query.port=25565 | |
| generator-settings= | |
| force-gamemode=false | |
| allow-nether=true | |
| enforce-whitelist=true | |
| gamemode=survival | |
| broadcast-console-to-ops=true | |
| enable-query=false | |
| player-idle-timeout=0 | |
| difficulty=easy | |
| spawn-monsters=true | |
| broadcast-rcon-to-ops=true | |
| op-permission-level=4 | |
| pvp=true | |
| snooper-enabled=true | |
| level-type=default | |
| hardcore=false | |
| enable-command-block=false | |
| max-players=30 | |
| network-compression-threshold=256 | |
| resource-pack-sha1= | |
| max-world-size=29999984 | |
| function-permission-level=2 | |
| rcon.port=25575 | |
| server-port=25565 | |
| server-ip= | |
| spawn-npcs=true | |
| allow-flight=false | |
| level-name=world | |
| view-distance=10 | |
| resource-pack= | |
| spawn-animals=true | |
| white-list=true | |
| rcon.password= | |
| generate-structures=true | |
| max-build-height=256 | |
| online-mode=true | |
| level-seed= | |
| use-native-transport=true | |
| prevent-proxy-connections=false | |
| enable-rcon=false | |
| motd=Welcome to the BG Minecraft Server | |
| EOF | |
| # Create a systemctl service to run the server. | |
| # This uses a screen launcher to allow terminal access to the server. | |
| cat <<EOF > "/lib/systemd/system/${MINECRAFT_SERVICE}" | |
| [Unit] | |
| Description=start and stop the minecraft server | |
| [Service] | |
| WorkingDirectory=${MINECRAFT_DIR} | |
| User=${MINECRAFT_USER} | |
| Group=${MINECRAFT_USER} | |
| Type=forking | |
| Restart=on-failure | |
| RestartSec=20 5 | |
| ExecStart=/usr/bin/screen -dmS minecraft /usr/bin/java -Xms1536M -Xmx1536M -jar server.jar nogui | |
| [Install] | |
| WantedBy=multi-user.target | |
| EOF | |
| # Start up the minecraft service. | |
| systemctl daemon-reload | |
| systemctl enable "${MINECRAFT_SERVICE}" | |
| systemctl start "${MINECRAFT_SERVICE}" | |
| sleep 1 | |
| systemctl status "${MINECRAFT_SERVICE}" |