我认为您还可以使用postgres备份容器，它可以在给定的时间内备份您的数据库。

  pgbackups:
    container_name: Backup
    image: prodrigestivill/postgres-backup-local
    restart: always
    volumes:
      - ./backup:/backups
    links:
      - db:db
    depends_on:
      - db
    environment:
      - POSTGRES_HOST=db
      - POSTGRES_DB=${DB_NAME} 
      - POSTGRES_USER=${DB_USER}
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - POSTGRES_EXTRA_OPTS=-Z9 --schema=public --blobs
      - SCHEDULE=@every 0h30m00s
      - BACKUP_KEEP_DAYS=7
      - BACKUP_KEEP_WEEKS=4
      - BACKUP_KEEP_MONTHS=6
      - HEALTHCHECK_PORT=81

备份数据库

docker exec -t your-db-container pg_dumpall -c -U postgres > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql

恢复数据库

cat your_dump.sql | docker exec -i your-db-container psql -U postgres

这是对我有用的命令。

cat your_dump.sql | sudo docker exec -i {docker-postgres-container} psql -U {user} -d {database_name}

例如

cat table_backup.sql | docker exec -i 03b366004090 psql -U postgres -d postgres

参考:GMartinez-Sisti在讨论中给出的解决方案。 https://gist.github.com/gilyes/525cc0f471aafae18c3857c27519fc4b

docker-compose用户的解决方案:

At First run the docker-compose file by any on of following commands: $ docker-compose -f loca.yml up OR docker-compose -f loca.yml up -d For taking backup: $ docker-compose -f local.yml exec postgres backup To see list of backups inside container: $ docker-compose -f local.yml exec postgres backups Open another terminal and run following command: $ docker ps Look for the CONTAINER ID of postgres image and copy the ID. Let's assume the CONTAINER ID is: ba78c0f9bcee Now to bring that backup into your local file system, run the following command: $ docker cp ba78c0f9bcee:/backups ./local_backupfolder

希望这能帮助到像我一样迷路的人。

注意:这个解决方案的全部细节可以在这里找到。

上面那个答案对我没用。我一直得到这个错误:

psql: error: FATAL:  Peer authentication failed for user "postgres"

为了让它工作，我必须为docker容器指定一个用户:

备份

docker exec -t --user postgres your-db-container pg_dumpall -c -U postgres > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql

恢复

cat your_dump.sql | docker exec -i --user postgres your-db-container psql -U postgres

猫db。Dump | docker exec…这种方法并不适用于我的转储(~2Gb)。它花了几个小时，最后出现内存不足的错误。

相反，我cp'ed dump到容器和pg_restore'ed它从内部。

假设容器id为CONTAINER_ID，数据库名称为DB_NAME:

# copy dump into container
docker cp local/path/to/db.dump CONTAINER_ID:/db.dump

# shell into container
docker exec -it CONTAINER_ID bash

# restore it from within
pg_restore -U postgres -d DB_NAME --no-owner -1 /db.dump