57 lines
2.2 KiB
Bash
Executable File
57 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Nightly ledger backup to DigitalOcean Spaces, one prefix per game in the shared bucket.
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# current/ - mirror of /var/lib/wyrm, less the rollup (rebuilt from logs)
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# snapshots/ - one dated copy per day, pruned after 90 days
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# Ledgers are append-only JSONL; the game server never needs stopping.
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# Sentry Crons check-in: /root/.wyrm-sentry-cron holds the check-in
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# URL (absent file = no check-ins). SCHEDULE must match /etc/cron.d/wyrm.
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# On a host the hall shares, hall-nightly.sh runs this and checks in once
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# for every game, so the file is absent and the exit status is the word.
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set -u
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SCHEDULE="23 7 * * *"
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BUCKET="kestrel-wizwar-backups" # the hall's shared Space, named for its first tenant
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PREFIX="wyrm"
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SRC="/var/lib/wyrm"
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LOG="/var/log/wyrm/backup.log"
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STAMP=$(date +%Y-%m-%d)
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mkdir -p "$(dirname "$LOG")"
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CRON_URL=$(cat /root/.wyrm-sentry-cron 2>/dev/null || true)
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# One check-in, when the run ends, carrying its duration: a start and a
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# finish sent seconds apart can reach Sentry in either order, and a start
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# that lands second is never closed. A run that never ends sends nothing,
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# and Sentry marks the night missed.
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START=$SECONDS
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checkin() {
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[ -n "$CRON_URL" ] && curl -sf -o /dev/null -X POST -H "Content-Type: application/json" \
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-d "{\"status\":\"$1\",\"duration\":$((SECONDS - START)),\"monitor_config\":{\"schedule\":{\"type\":\"crontab\",\"value\":\"$SCHEDULE\"},\"checkin_margin\":30,\"max_runtime\":10,\"timezone\":\"UTC\"}}" \
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"$CRON_URL" || true
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}
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if [ ! -s /root/.config/rclone/rclone.conf ]; then
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echo "$(date -Is) skipped: rclone is not configured" >> "$LOG"
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exit 1
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fi
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status=0
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{
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echo "=== $(date -Is) backup start"
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if rclone sync "$SRC" "spaces:$BUCKET/$PREFIX/current" --exclude 'rollup.jsonl' 2>&1 &&
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rclone copy "$SRC" "spaces:$BUCKET/$PREFIX/snapshots/$STAMP" 2>&1; then
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checkin ok
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else
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checkin error
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status=1
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fi
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CUTOFF=$(date -d "90 days ago" +%Y-%m-%d)
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rclone lsf "spaces:$BUCKET/$PREFIX/snapshots/" --dirs-only 2>/dev/null | \
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while read -r d; do
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day="${d%/}"
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if [[ "$day" < "$CUTOFF" ]]; then
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echo "pruning snapshot $day"
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rclone purge "spaces:$BUCKET/$PREFIX/snapshots/$day" 2>&1
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fi
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done
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echo "=== $(date -Is) backup done"
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} >> "$LOG" 2>&1
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exit $status
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