feat: script backup PostgreSQL → Backblaze B2

scripts/backup-postgres.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+# backup-postgres.sh — Sauvegarde quotidienne rs971_db → Backblaze B2
+#
+# Prérequis :
+#   1. rclone installé sur le VPS : apt-get install rclone
+#   2. rclone configuré avec un remote nommé "b2" pointant sur Backblaze B2 :
+#        rclone config  (choisir "b2", entrer account ID + application key)
+#   3. Bucket B2 créé (ex : rs971-backups)
+#
+# Installation cron VPS (3h UTC chaque nuit) :
+#   crontab -e
+#   0 3 * * * /opt/stack/apps/radarsargasses971/scripts/backup-postgres.sh >> /var/log/rs971-backup.log 2>&1
+
+set -euo pipefail
+
+# ── Configuration ──────────────────────────────────────────────────────────
+DB_CONTAINER="db_global"
+DB_USER="postgres"
+DB_NAME="rs971_db"
+RCLONE_REMOTE="b2"
+RCLONE_BUCKET="rs971-backups"
+RETENTION_DAYS=30
+BACKUP_DIR="/tmp/rs971-backups"
+# ───────────────────────────────────────────────────────────────────────────
+
+mkdir -p "$BACKUP_DIR"
+
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+BACKUP_FILE="${BACKUP_DIR}/${DB_NAME}_${TIMESTAMP}.sql.gz"
+
+echo "[$(date -Iseconds)] === Début sauvegarde ${DB_NAME} ==="
+
+# Dump compressé directement dans le fichier
+docker exec "$DB_CONTAINER" pg_dump -U "$DB_USER" --no-password "$DB_NAME" \
+    | gzip > "$BACKUP_FILE"
+
+SIZE=$(du -sh "$BACKUP_FILE" | cut -f1)
+echo "[$(date -Iseconds)] Sauvegarde locale : ${BACKUP_FILE} (${SIZE})"
+
+# Upload vers B2
+rclone copy "$BACKUP_FILE" "${RCLONE_REMOTE}:${RCLONE_BUCKET}/$(hostname)/"
+echo "[$(date -Iseconds)] Upload B2 OK → ${RCLONE_REMOTE}:${RCLONE_BUCKET}/$(hostname)/"
+
+# Nettoyage fichier local
+rm -f "$BACKUP_FILE"
+
+# Suppression des backups distants > RETENTION_DAYS jours
+rclone delete --min-age "${RETENTION_DAYS}d" "${RCLONE_REMOTE}:${RCLONE_BUCKET}/$(hostname)/"
+echo "[$(date -Iseconds)] Nettoyage remote > ${RETENTION_DAYS} jours OK"
+
+echo "[$(date -Iseconds)] === Sauvegarde terminée ==="