Addition of volumes about fargatecli HOT 7 OPEN

Shared data volumes are for sharing data between containers within an instance of a running task. Since the CLI really only supports one container running per task, there's not much utility in defining volumes today. What did you have in mind in terms of using volumes via the CLI?

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I was looking through the json and we could specify a shared data volume. Like a shared file etc. This could help save producer consumer related problems by using the volume as a semaphore etc. I had been trying to implement such a service instead. If a data volume could be specified like --data-volume whole running fargate clusters would be so much helpful in many situations.

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Yea I agree it's one container per task. But multiple tasks can be run, which would all try to access the same shared data volume.

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Gotcha. Yeah, shared data volumes are actually only accessible within a given task, not throughout an entire cluster. If AWS Fargate ships a feature to allow persistence across an entire cluster, I'll certainly immediately support it. Until then, I think this proposal is blocked.

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https://github.com/rog555/aws_batch_efs

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@jpignata This seems to exist https://docs.aws.amazon.com/AmazonECS/latest/developerguide/fargate-task-storage.html

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