[FAQ Bot] NEW: How can I back up and restore PostgreSQL data stored in a Docker volume?

_questions/data-engineering-zoomcamp/module-1/025_30dcc71db8_postgres-docker-volume-backup-restore.md

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+---
+id: 30dcc71db8
+question: How can I back up and restore PostgreSQL data stored in a Docker volume?
+sort_order: 25
+---
+
+- Method 1: Docker volume backup
+  ```bash
+  # List Docker volumes
+  docker volume ls
+  # Backup while the container is running
+  docker run --rm \
+  -v ny_taxi_postgres_data:/data \
+  -v $(pwd):/backup \
+  ubuntu tar czf /backup/postgres_backup.tar.gz /data
+  # Restore
+  docker run --rm \
+  -v ny_taxi_postgres_data:/data \
+  -v $(pwd):/backup \
+  ubuntu tar xzf /backup/postgres_backup.tar.gz -C /
+  ```
+- Method 2: Using pg_dump
+  ```bash
+  # Backup
+  docker exec -t postgres_container pg_dump -U root -d ny_taxi > ny_taxi_backup.sql
+  # Restore
+  docker exec -i postgres_container psql -U root -d ny_taxi < ny_taxi_backup.sql
+  ```
+- Method 3: Copying the host directory
+  ```bash
+  # When using a host-mounted directory in docker-compose.yaml
+  cp -r ./ny_taxi_postgres_data ./ny_taxi_postgres_data_backup
+  ```