[Unit]
Description=Minecraft Server %I
Documentation=https://minecraft.gamepedia.com/Tutorials/Setting_up_a_server
After=network.target

[Service]
User={{minecraft_user}}
Group={{minecraft_user}}
WorkingDirectory={{minecraft_parent_dir}}/minecraft/%i
Restart=on-failure
RestartSec=20 5
ExecStart=/usr/bin/java -Xms{{minecraft_mem}} -Xmx{{minecraft_mem}} -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -jar server.jar nogui

PrivateTmp=true
ProtectSystem=full
NoNewPrivileges=true
PrivateDevices=true

[Install]
WantedBy=multi-user.target