Paul Kloppers
90697cdb62
Stream tar from inside the container to the host, so all server interaction (rcon + archive) happens through docker exec. Requires the container to be running; fails fast otherwise.
31 lines
810 B
Bash
Executable File
31 lines
810 B
Bash
Executable File
#!/usr/bin/env bash
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# Usage: ./backup.sh [label]
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# Creates backups/world-YYYY-MM-DD-HHMM[-label].tar.gz
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# Requires the minecraft container to be running.
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set -euo pipefail
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cd "$(dirname "$0")"
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LABEL="${1:-}"
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STAMP="$(date +%Y-%m-%d-%H%M)"
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SUFFIX="${LABEL:+-$LABEL}"
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OUT="backups/world-${STAMP}${SUFFIX}.tar.gz"
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mkdir -p backups
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if ! docker ps --format '{{.Names}}' | grep -qx minecraft; then
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echo "Error: minecraft container is not running." >&2
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exit 1
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fi
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echo "Flushing world via rcon..."
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docker exec minecraft rcon-cli save-off >/dev/null
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docker exec minecraft rcon-cli save-all flush >/dev/null
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trap 'docker exec minecraft rcon-cli save-on >/dev/null || true' EXIT
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echo "Archiving /data/world -> ${OUT}"
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docker exec minecraft tar -czf - -C /data world > "${OUT}"
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echo "Done."
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ls -lh "${OUT}"
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