Backup and restore a mysql database from a running Docker mysql container

mysql-docker.sh

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

Can someone please tell me, how I get the database dump out of the docker container on my host? The command
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql
seems to dump the file inside the docker container, but I need it on my host. Thanks!

I think, you may use this command to get the files in host from container: docker cp :/file/path/within/container /host/path/target

have you tried to map a volume to your host?
For example, if you dump the .sql file INSIDE the container on /home/dump (or whatever folder you want)
just map this folder as a volume on you host.

I can give you an example with docker-compose.yml. With pure docker I don't know how to map a volume (never needed since I always worked with docker-compose hahaha)

version: '3'
services:
  mydb:
    container_name: mydb
    image: mariadb:latest
    ports:
      - 3306:3306
    environment:
      MYSQL_DATABASE: mydb
      MYSQL_USER: user
      MYSQL_PASSWORD: 123
      MYSQL_ROOT_PASSWORD: 123456
    volumes:
      - /home/host_folder_dump:/home/container_folder_dump

Since you take a mysql dump, automatically the .sql file will appear in your host folder.
Tell me what you think?

Can someone please tell me, how I get the database dump out of the docker container on my host? The command
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql
seems to dump the file inside the docker container, but I need it on my host. Thanks!

I think, you may use this command to get the files in host from container: docker cp :/file/path/within/container /host/path/target

@nhossaincse

Thanks! I already solved its (inside my script) this way:

docker cp <container_id>:/file/path/within/container /host/path/target

Since you take a mysql dump, automatically the .sql file will appear in your host folder. Tell me what you think?

@ambrosiora

Thanks! I already solved its (inside my script) this way:

docker cp <container_id>:/file/path/within/container /host/path/target

Very sweet. Thank you very much.

Thank you!

This helped a bunch, thank you!

Thanks

:-*

thank you so much!

Thanks a lot!

Thank you!