61 lines
1.7 KiB
Bash
Executable File
61 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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BACKUP_DIR="/opt/memento/backups"
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WAL_DIR="$BACKUP_DIR/wal"
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SNAPSHOT_DIR="$BACKUP_DIR/snapshots"
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TIMESTAMP=$(date +%Y%m%d-%H%M%S)
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RETENTION_DAYS=7
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RETENTION_WEEKS=4
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PG_CONTAINER="memento-postgres"
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PG_USER="${POSTGRES_USER:-memento}"
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PG_DB="${POSTGRES_DB:-memento}"
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LOG_FILE="$BACKUP_DIR/backup.log"
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mkdir -p "$WAL_DIR" "$SNAPSHOT_DIR"
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
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}
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log "=== Starting backup ==="
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SNAPSHOT_FILE="$SNAPSHOT_DIR/memento-$TIMESTAMP.sql.gz"
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log "Creating snapshot: $SNAPSHOT_FILE"
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docker exec "$PG_CONTAINER" pg_dump -U "$PG_USER" -d "$PG_DB" --format=custom | gzip > "$SNAPSHOT_FILE"
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SNAPSHOT_SIZE=$(stat -c%s "$SNAPSHOT_FILE" 2>/dev/null || echo 0)
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if [ "$SNAPSHOT_SIZE" -lt 1048576 ]; then
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log "ERROR: Snapshot is only $SNAPSHOT_SIZE bytes (< 1MB). Possible failure!"
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exit 1
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fi
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log "Snapshot OK: $(( SNAPSHOT_SIZE / 1024 ))KB"
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log "Verifying snapshot integrity..."
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if gzip -t "$SNAPSHOT_FILE" 2>/dev/null; then
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log "Integrity check: PASSED"
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else
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log "ERROR: Snapshot integrity check FAILED!"
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exit 1
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fi
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log "Cleaning old snapshots (keeping $RETENTION_DAYS days + $RETENTION_WEEKS weekly)..."
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cd "$SNAPSHOT_DIR"
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find . -name "*.sql.gz" -mtime +$RETENTION_DAYS ! -name "*-000000.sql.gz" -delete 2>/dev/null || true
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for i in $(seq 1 $RETENTION_WEEKS); do
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WEEK_DATE=$(date -d "$RETENTION_DAYS + $((i-1)) * 7 days" +%Y%m%d)
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WEEK_FILE=$(ls -t memento-${WEEK_DATE}*.sql.gz 2>/dev/null | head -1)
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if [ -n "$WEEK_FILE" ]; then
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touch "$WEEK_FILE"
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fi
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done
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SNAPSHOT_COUNT=$(ls -1 "$SNAPSHOT_DIR"/*.sql.gz 2>/dev/null | wc -l)
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log "Cleanup done. $SNAPSHOT_COUNT snapshots remaining"
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log "=== Backup complete ==="
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