Constrain only the minimum allowed version

[naseemkullah]

Hi,

I use a thin wrapper around this module as follows:

In main.tf I have defined the google-beta provider pinned to v2.20.0 as well as:

module gke_us_east {
  source       = "../../modules/zonal-cluster"
[...]
}

Then my zonal-cluster module(which is a wrapper around this repo)'s maint.tf:

module "gke" {
  source                  = "terraform-google-modules/kubernetes-engine/google//modules/beta-public-cluster"
  version                 = "6.0.0"
[...]

I am currently faced with the following issue:

No provider "google-beta" plugins meet the constraint "v2.20.0,~> 2.18.0".

Which was introduced by the new constraint within this module for google-beta provider ~> 2.18.0, which seems like the right thing to do, but I am unsure how to workaround my setup's issue.

Taken from output of terraform providers:

└── module.gke_us_east
    ├── provider.google
    ├── provider.kubernetes
    └── module.gke
        ├── provider.google (inherited)
        ├── provider.google-beta ~> 2.18.0
        ├── provider.kubernetes
        ├── provider.null
        └── provider.random

[morgante]

Sorry for the issue!

It looks like we're pinning to ~> 2.18.0 which is too pessimistic. We should pin to ~> 2.18 instead.

[naseemkullah]

Ah I see! Just read up this terraform documentation on provider versions and indeed:

Re-usable modules should constrain only the minimum allowed version, such as >= 0.12.0.

[naseemkullah]

~> 2.18 would be anything above 2.18.0 but anything less than 3.0.0 is that right?

Would it be better to ping to >=2.18.0 ? 3.0.0 is right around the corner after all

[morgante]

We don't support 3.0.0 yet, but once we do we can definitely update it for that.