# /etc/systemd/system/minecraft.service
[Unit]
Description=Minecraft Fabric Server
After=network.target
Wants=network-online.target

[Service]
User=mcfabricuser
Group=mcfabricuser
WorkingDirectory=/minecraft/1.21.1-fabric-server
ExecStart=/usr/bin/java -Xms1G -Xmx4G -XX:+UseG1GC -jar fabric-server-mc.1.21.1-loader.0.16.10-launcher.1.0.1.jar nogui
ExecStop=/usr/bin/mcrcon -H 127.0.0.1 -P 25575 -p your_rcon_password stop
ExecStopPost=/bin/sleep 10
Restart=on-failure
RestartSec=10
TimeoutStopSec=120
KillMode=process
MemoryLimit=6G
OOMScoreAdjust=-999
StandardOutput=append:/minecraft/1.21.1-fabric-server/minecraft.log
StandardError=append:/minecraft/1.21.1-fabric-server/error.log
WatchdogSec=60
ExecStartPre=/usr/bin/touch /tmp/minecraft-ready
ExecStartPost=/usr/bin/touch /tmp/minecraft-running

[Install]
WantedBy=multi-user.target

# /etc/systemd/system/minecraft-backup.service
[Unit]
Description=Minecraft World Backup
Requires=minecraft.service
After=minecraft.service

[Service]
Type=oneshot
User=mcfabricuser
Group=mcfabricuser
WorkingDirectory=/minecraft/1.21.1-fabric-server
ExecStartPre=/usr/bin/mcrcon -H 127.0.0.1 -P 25575 -p your_rcon_password save-all flush  # 强制保存世界
ExecStartPre=/usr/bin/mcrcon -H 127.0.0.1 -P 25575 -p your_rcon_password save-off       # 禁用自动保存
ExecStart=/bin/bash -c "tar -cvpzf backups/world_$(date +%%F-%%H%%M).tar.gz world"
ExecStartPost=/usr/bin/mcrcon -H 127.0.0.1 -P 25575 -p your_rcon_password save-on       # 恢复自动保存
ExecStartPost=/bin/echo 'Backup completed at $(date)' >> backups/backup.log

# 失败时记录日志
ExecStopPost=/bin/sh -c 'if [ $? -ne 0 ]; then echo "Backup failed at $(date)" >> backups/backup.log; fi'

# /etc/systemd/system/minecraft-backup.timer
[Unit]
Description=Daily Minecraft Backup Timer

[Timer]
# 每天凌晨4点执行
OnCalendar=*-*-* 04:00:00  
# 如果错过时间，开机后补执行
Persistent=true     
# 允许1小时时间窗口        
AccuracySec=1h             

[Install]
WantedBy=timers.target

# 设置权限
sudo chown -R mcfabricuser:mcfabricuser /minecraft
sudo chmod 644 /etc/systemd/system/minecraft*.{service,timer}

# 启动服务
sudo systemctl daemon-reload
sudo systemctl enable minecraft.service minecraft-backup.timer
sudo systemctl start minecraft.service minecraft-backup.timer

# 验证服务状态
systemctl status minecraft.service
journalctl -u minecraft-backup.service -f  # 手动触发一次备份测试

# server.properties 开启 mcrcon
enable-rcon=true
rcon.password=your_rcon_password
rcon.port=25575

注意事项:

• RCON 配置：确保 server.properties 中的 rcon.password 和 rcon.port 与服务文件一致。
• 防火墙：若使用非本地 RCON，需开放 25575 端口。
• 备份验证：定期检查 /minecraft/…/backups 目录下的备份文件是否完整。