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Ephemeral storage definition in dockers12/18/2023 ![]() ![]() You can bind individual host directories to target directories in the Docker container, which is useful, but the recommended method is to create a new "volume," managed by Docker. This link can be read-only, but also read/write, where files written by the Docker container will persist on disk. Bind mounts allow you to mount a particular location on your server's filesystem to a location inside the Docker container. Simple Solution: Mount a Drive to a Containerĭocker has two ways to achieve persistence: volume mounts, and bind mounts. This method also allows you to run additional processing using Lambda functions on uploaded content, such as compressing images or video, which can save you a lot on bandwidth costs. Rather than storing a file on disk, you upload directly to S3. It's much cheaper than EBS-based storage, and far cheaper compared to EFS storage, which is your primary choice for a shared filesystem for ECS containers. If you really need to store files, such as user uploaded photos and video, you really should be using AWS's Simple Storage Service (S3). ![]() Using IAM permissions, this can be accomplished securely, entirely within your VPC. ![]() The Docker container is entirely stateless like it is intended to be it can be stopped, started, or hit with a sledgehammer, and a new one can be spun up in its place, all without data loss. It doesn't make much sense to run MySQL in a Docker container, so you should instead deploy MySQL on RDS or EC2, and have the Docker container connect to it directly. Storing state as a file on disk isn't in line with Docker's model, and while it can be done, it's always best to consider-do you really need to?įor example, let's say you're running an a web application in Docker that needs to store data in a database. This is the method that most people will recommend. ![]()
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