CODEWITHSUNDEEP
amazon-s3dockerdocker-compose
jamesmstone
jamesmstone

Reputation: 397

Docker Compose - [link/mount volume/volume_from] sharing data between containers, not using host

Sorry I'm not sure of the correct terminology ( So I'll try to get my point across by using it all). Sorry still new to docker.

I need a way to [link/mount volume/volume_from] storage between containers - but cant seem to figure it out. I don't want to use the host machine as I'm trying to share access to a large s3 bucket - i.e. host machine physically can't store a copy of it all.

docker-compose.yml

web:
  hostname: web
  image:  mprasil/webdav
  ports:
    - "80:80"
  links:
    - s3
  volumes:
    - /local/dir/:/site/input/

s3:
  image: xueshanf/s3fs

Upvotes: 1

Views: 2184

Answers (1)

BMW
BMW

Reputation: 45323

There is an option --volumes-from you can use.

$ docker create -v /dbdata --name dbdata training/postgres /bin/true
You can then use the --volumes-from flag to mount the /dbdata volume in another container.

$ docker run -d --volumes-from dbdata --name db1 training/postgres
And another:

$ docker run -d --volumes-from dbdata --name db2 training/postgres
In this case, if the postgres image contained a directory called /dbdata then mounting the volumes from the dbdata container hides the /dbdata files from the postgres image. The result is only the files from the dbdata container are visible.

You can use multiple --volumes-from parameters to bring together multiple data volumes from multiple containers.

So in your case, you can update docker-compose.yaml in container web:

volumes_from:
 - s3

refer: Managing data in containers: Creating and mounting a data volume container

docker-compose.yml reference: volumes_from

Upvotes: 1

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