kennethreitz
f06d489bbc
Keeps newest KEEP (default 7) MinIO backup object dirs per job, pruning the rest by full path (object dirs are multipart, not real .zip files). Deployed to /usr/local/bin and run daily 04:00 UTC via /etc/cron.d/prune-backups -> /var/log/prune-backups.log. Closes the +3G/day unbounded-backup growth flagged in the 2026-06-28 cleanup. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
54 lines
2.2 KiB
Bash
Executable File
54 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Prune old Dokploy/MinIO backup objects to a retention count.
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#
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# Dokploy stores each scheduled backup as a MinIO multipart OBJECT, which on the
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# single-node fs backend is a *directory* of `part.NN` chunks + `xl.meta` named
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# like `webserver-backup-2026-06-28T00-00-00-097Z.zip`. Their ISO-8601 names sort
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# chronologically, so "keep newest N" = keep the last N after a lexical sort.
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#
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# Runs ON the server (mercury) — see the cron block in docs/server.md.
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#
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# Usage:
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# scripts/prune-backups.sh # keep 7 (default), really delete
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# KEEP=14 scripts/prune-backups.sh # keep 14
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# DRY_RUN=1 scripts/prune-backups.sh # show what would be deleted, delete nothing
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#
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# Env:
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# KEEP number of most-recent backups to keep per job dir (default 7)
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# BASE backups root (default /var/lib/minio-infra/dokploy-backups)
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# DRY_RUN set to 1 to only print
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set -euo pipefail
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KEEP="${KEEP:-7}"
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BASE="${BASE:-/var/lib/minio-infra/dokploy-backups}"
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DRY_RUN="${DRY_RUN:-0}"
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[[ "$KEEP" =~ ^[0-9]+$ && "$KEEP" -ge 1 ]] || { echo "KEEP must be a positive integer" >&2; exit 2; }
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[[ -d "$BASE" ]] || { echo "backups root not found: $BASE" >&2; exit 1; }
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ts() { date '+%Y-%m-%dT%H:%M:%S%z'; }
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deleted_total=0
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# Each immediate subdir of BASE is one backup JOB; its child dirs are the backup objects.
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for job in "$BASE"/*/; do
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[[ -d "$job" ]] || continue
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jobname="$(basename "$job")"
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# Object dirs, oldest first; drop the newest KEEP, prune the rest by full path.
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mapfile -t victims < <(find "$job" -mindepth 1 -maxdepth 1 -type d | sort | head -n "-$KEEP")
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(( ${#victims[@]} )) || { echo "$(ts) [$jobname] nothing to prune (<= $KEEP backups)"; continue; }
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for obj in "${victims[@]}"; do
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if [[ "$DRY_RUN" == "1" ]]; then
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echo "$(ts) [$jobname] WOULD delete $(basename "$obj") ($(du -sh "$obj" 2>/dev/null | cut -f1))"
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else
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sz="$(du -sh "$obj" 2>/dev/null | cut -f1)"
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rm -rf "$obj"
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echo "$(ts) [$jobname] deleted $(basename "$obj") ($sz)"
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((deleted_total++))
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fi
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done
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done
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echo "$(ts) done — keep=$KEEP, deleted=$deleted_total, dry_run=$DRY_RUN, df=$(df -h "$BASE" | awk 'NR==2{print $5" used, "$4" free"}')"
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