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docs: Update documentation to reflect latest changes related to aws-auth configmap and upgrading (#2003)

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Bryant Biggs
2022-04-10 09:20:38 -04:00
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docs/faq.md
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# Frequently Asked Questions
- [How do I manage the `aws-auth` configmap?](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/docs/faq.md#how-do-i-manage-the-aws-auth-configmap)
- [I received an error: `Error: Invalid for_each argument ...`](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/docs/faq.md#i-received-an-error-error-invalid-for_each-argument-)
- [Why are nodes not being registered?](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/docs/faq.md#why-are-nodes-not-being-registered)
- [Why are there no changes when a node group's `desired_size` is modified?](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/docs/faq.md#why-are-there-no-changes-when-a-node-groups-desired_size-is-modified)
- [How can I deploy Windows based nodes?](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/docs/faq.md#how-can-i-deploy-windows-based-nodes)
- [How do I access compute resource attributes?](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/master/docs/faq.md#how-do-i-access-compute-resource-attributes)
### How do I manage the `aws-auth` configmap?
TL;DR - https://github.com/terraform-aws-modules/terraform-aws-eks/issues/1901
- Users can roll their own equivalent of `kubectl patch ...` using the [`null_resource`](https://github.com/terraform-aws-modules/terraform-aws-eks/blob/9a99689cc13147f4afc426b34ba009875a28614e/examples/complete/main.tf#L301-L336)
- There is a module that was created to fill this gap that provides a Kubernetes based approach to provision: https://github.com/aidanmelen/terraform-aws-eks-auth
- Ideally, one of the following issues are resolved upstream for a more native experience for users:
- https://github.com/aws/containers-roadmap/issues/185
- https://github.com/hashicorp/terraform-provider-kubernetes/issues/723
### I received an error: `Error: Invalid for_each argument ...`
Users may encounter an error such as `Error: Invalid for_each argument - The "for_each" value depends on resource attributes that cannot be determined until apply, so Terraform cannot predict how many instances will be created. To work around this, use the -target argument to first apply ...`