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> What I prefer to do is use Terraform to create immutable infrastructure from code. Can you mount all your volumes read-only and run all of your stack? If you
by notyourday 7y ago
> What I prefer to do is use Terraform to create immutable infrastructure from code.
Can you mount all your volumes read-only and run all of your stack? If you cannot, then you do not have immutable infrastructure. You simply happen to agree that no one write anything useful, which with time will absolutely fail because someone, somewhere is going to start storing state on a stateless system giving you "a cow #378 called 'Betsy'"
- tilolebo 7y agoIn the current state of infrastructure, an accepted definition of "immutable infrastructure" is that: 1. You deploy a completely fresh instance/container, instead of in-place updates 2. You don't actively push changes on a running instance/container Of course you might have stuff written to disk, such as logs, temp files, etc. But it should be non-essential data, and potentially pushed to a central place in near real-time.
- HelloNurse 7y agoInteresting. How would you do that if your deployment is, say, a couple of new tables in a 50TB Oracle database?
- tilolebo 7y agoIt only works with stateless resources. There's no point in trying to manage a database or similar resources this way.