Add max_allocated_storage param, and update some defaults #48
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Adds a max_allocated_storage variable to match the new parameter available on the postgresql component. Defaults to 0, i.e. no storage auto-scaling. Also updates the README lines about the storage parameters, and a few others that were nearby and glaringly out of date.
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This adds the
max_allocated_storageparameter, and a variable to provide a value for it. The default is0, i.e. no automatic storage scaling.While I was in the variables file and README to add that, I also updated a few defaults to more modern values, including changing the default storage class to gp3. It's cheaper and faster, so it makes sense as a default, though the relationship with the
iopsparameter is a bit complicated—above 400GB, you can pick how much you want, but below that there's a fixed value, 3000 IOPS. The IOPS value will automatically get set to that, but if you don't have the parameter set, Terraform will register it as a change (3000 -> null). I'm not sure if applying that would crash, throw an error and ignore the change, or what, because I didn't try. But that's why the IOPS default is now 3000.Resolves #40