I have about 11 containers that share data in the same volumes. I want to use Fargate so that I don't have to manually manage memory. But I couldn't put them to the same task definition because of ECS 10 containers per task definition limit. Is there a way to overcome this?
I also thought about using EFS as shared file system between containers but this is single point of failure.
I am a member of the AWS container team. It looks like EFS would be the way to go here. This is exactly the type of use cases we built this integration for. Also note that EFS is not a SPOF because it's a regional service and data is replicated across 3 different AZ with mount points in each AZ. This means that should there be a problem in one of the AZ your application will continue to run on the remaining AZs and your data would still be fully available.
