Using "snapshot_identifier" with no "allocated_storage" gives an error

[jcmcken]

The allocated_storage variable is not required when using snapshot_identifier, because the DB instance will use whatever storage size the snapshot used (the documentation also states this)

However, if you try to pass snapshot_identifier (but not allocated_storage), you get a type error:

allocated_storage: cannot parse '' as int: strconv.ParseInt: parsing "": invalid syntax

Version info:

Terraform v0.11.11
+ provider.aws v2.3.0

[sdouche]

Hello,
I'm interested too to be able to use a snapshot w/o give the storage size.

I think the simplest solution is to:

• Add a default value to allocated_storage
• Select the variable if no snapshot is specified (allocated_storage = var.snapshot_identifier != "" ? null : var.allocated_storage).

What do you think @antonbabenko? Do you have a better idea?

[aleon1220]

is happenning to me now and i am on terraform cloud. I believe the conflict is in
the duplicate use of the var.snapshot_identifier

Take a look at line 63 and 139

https://github.com/terraform-aws-modules/terraform-aws-rds/blob/master/modules/db_instance/main.tf#L139

[aleon1220]

I think the majority of the community is tracking the issue at hashicorp/terraform-provider-aws#17712

[bryantbiggs]

hi all, I believe this was an issue in the upstream AWS provider (hashicorp/terraform-provider-aws#17755) - so closing for now. please feel free to respond or open a new issue if necessary

[github-actions]

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