ulicraft-server-v1/plan/07-mc-backup.md

mc-backup — world backups

Summary

itzg/mc-backup alongside the server, talking via RCON. Snapshots the world every 6h, prunes after 14 days. World-only (no mod jars — mods are reproducible from the packwiz pack). Unchanged from the original design; lowest-priority service.

Config (carry-over)

mc-backup:
  image: itzg/mc-backup
  environment:
    BACKUP_INTERVAL: "6h"
    RCON_HOST: "minecraft"
    RCON_PASSWORD: ${RCON_PASSWORD}
    PRUNE_BACKUPS_DAYS: "14"
    TZ: "Europe/Madrid"
  volumes:
    - mc_data:/data:ro
    - ./backups:/backups

Tasks

• Keep mc-backup service on mcnet, depends_on: minecraft
• Confirm RCON enabled on server (ENABLE_RCON, RCON_PASSWORD)
• Verify ./backups/ is gitignored (already is)
• Optional: shorter interval / manual rcon save-all before risky changes