fix: use aws eks get-token for kubectl auth #1590

schollii · 2021-09-17T17:10:07Z

PR o'clock

Description

Fixes #957

Use aws eks get-token instead of aws iam authenticator

Checklist

[n/a ] README.md has been updated after any changes to variables and outputs. See https://github.com/terraform-aws-modules/terraform-aws-eks/#doc-generation

lisfo4ka · 2021-10-12T14:44:03Z

variables.tf

@@ -219,7 +219,7 @@ variable "kubeconfig_aws_authenticator_env_variables" {
 variable "kubeconfig_name" {
  description = "Override the default name used for items kubeconfig."
  type        = string
-  default     = ""
+  default     = null


Could you clarify, please, why is it required?

probably because:

> coalescelist([""], ["c", "d"]) [ "", ] >

from line

terraform-aws-eks/locals.tf

Line 179 in 7785562

aws_authenticator_command_args = coalescelist(var.kubeconfig_aws_authenticator_command_args, local.default_kubeconfig_aws_auth_args)

actually coalesce works with both "" and null, BUT it is almost always preferable to use null than empty string to indicate "no value set".

actually coalesce works with both "" and null

yes but it will give different results (from terraform console):

> coalescelist([""], ["c", "d"]) [ "", ] > coalescelist([], ["c", "d"]) [ "c", "d", ]

ahh, but here is just normal string

yes the function being discussed is coalesce not coalescelist

lisfo4ka · 2021-10-12T14:45:53Z

variables.tf

@@ -219,7 +219,7 @@ variable "kubeconfig_aws_authenticator_env_variables" {
 variable "kubeconfig_name" {


would you update kubeconfig_aws_authenticator_command default value as well?

…or clarity

lisfo4ka · 2021-10-18T15:01:40Z

@antonbabenko @daroga0002 @schollii hi folks)
From my side, this change looks really good and useful. I suppose it shouldn't trigger more changes as kubeconfig file recreation which shouldn't be critical since terraform folder isn't the place to store it.

@schollii could you post terraform plan output, please. And if everyone is fine with it, let's merge this MR.

schollii · 2021-10-19T17:23:37Z

@schollii could you post terraform plan output, please...

@lisfo4ka, in what folder should I run this?

lisfo4ka · 2021-10-26T13:29:56Z

@lisfo4ka, in what folder should I run this?

I assume it can be any, e.g. examples/launch_templates

antonbabenko · 2021-10-26T17:27:58Z

variables.tf

  type        = string
-  default     = "aws-iam-authenticator"
+  default     = null


Suggested change

default = null

default = "aws"

And remove coalesce() where this variable is used. Right?

@schollii do you will be able to change it and then I will make testing

schollii · 2021-10-27T18:48:34Z

@lisfo4ka ok will report back asap

timblaktu

Changes look good to me. This will be a big improvement. All external examples of first steps configuring kubectl to auth/connect to an EKS cluster use the aws eks update-kubeconfig approach, which uses the get-token approach, so aligning this Terraform module will prevent new users from being confused why they're so different (and prevent them from having to install aws-iam-authenticator.)

bryantbiggs · 2021-11-06T19:52:30Z

I think we should include this in a breaking change and drop all support for the legacy iam-authenticator approach - thoughts @daroga0002 ?

daroga0002 · 2021-11-07T16:57:27Z

I tried to search what are benefits of using aws-iam-authenticator and I dont see any, maybe somebody from community will be able to put some arguments here.

From my side I think we can:

drop totally support for aws-iam-authenticator and remove any customization in our code
provide in outputs (I believ most or all are arleady done) values which can be used to build any form of Kube config (so thne if somebody will have own requirements can pass a template and fill them by outputs)

schollii · 2021-11-07T17:52:11Z

It's a good idea but I think it's taking this ticket beyond original scope, a separate ticket would be better so we can close this asap.

Yasumoto · 2021-11-08T00:57:23Z

Getting this over the finish line would be rad. When I was first getting started, trying to find this extra tool (and figure out if aws-iam-authenticator was actively recommended) was a bit of a road bump.

daroga0002 · 2021-11-08T11:52:45Z

It's a good idea but I think it's taking this ticket beyond original scope, a separate ticket would be better so we can close this asap.

@schollii can you adjust comments #1590 (comment) and then we will merge it to v17.* version

Work about redesign we will cover in other PR for v18* milestone

schollii · 2021-11-08T13:15:58Z

@daroga0002 not sure what you mean, clicking that link in your post just gets me to the top of the PR

daroga0002 · 2021-11-08T13:24:34Z

open comments from antonbabenko

antonbabenko · 2021-11-08T13:34:16Z

@daroga0002 I think we should have this one merged (after outstanding code changes got merged) and release a minor release in v17.

I am not knowledgeable enough to suggest dropping part of the functionality since it already works. I think we can reevaluate it as a part of the breaking changes we are going to have in v18 but not in this PR.

daroga0002 · 2021-11-08T13:41:21Z

I am not knowledgeable enough to suggest dropping part of the functionality since it already works. I think we can reevaluate it as a part of the breaking changes we are going to have in v18 but not in this PR.

Yes this is what I am suggesting, now we simply extend to allow feature in v17 and in v18 we will drop legacy approach (as that will be bigger breaking change release so migration will be not so fast probably).

I will duplicate this PR and make fixes on my branch, test and open PR as I cannot edit this.

lisfo4ka · 2021-11-23T09:28:32Z

Folks, I'd really like to deliver this change to the v17, so I've created a new PR with proper testing. Please, take a look at #1699

github-actions · 2021-12-24T00:41:41Z

This PR has been automatically marked as stale because it has been open 30 days
with no activity. Remove stale label or comment or this PR will be closed in 10 days

github-actions · 2022-01-03T00:42:35Z

This PR was automatically closed because of stale in 10 days

antonbabenko · 2022-01-05T19:58:41Z

This issue has been resolved in version 18.0.0 🎉

github-actions · 2022-11-11T02:34:07Z

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.

use aws eks get-token instead of aws authenticator

7785562

schollii changed the title ~~fix: use aws eks get-token instead of aws iam authenticator (~~ fix: use aws eks get-token for kubectl auth Sep 17, 2021

schollii mentioned this pull request Sep 17, 2021

fix: #957 Use aws eks get-token instead of aws-iam-authenticator #1235

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lisfo4ka reviewed Oct 12, 2021

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olivers-xaxis and others added 3 commits October 12, 2021 12:31

default to null kubectl auth command

7a27249

clarify variable description and re-order auth command default args f…

5c1411b

…or clarity

Merge branch 'master' into use_aws_eks_token_instead_of_authenticator

438eacd

Merge branch 'master' into use_aws_eks_token_instead_of_authenticator

0a4a966

antonbabenko reviewed Oct 26, 2021

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timblaktu approved these changes Nov 5, 2021

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bryantbiggs mentioned this pull request Dec 7, 2021

feat!: Removed support for launch configuration and replace count with for_each #1680

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fix: use aws eks get-token for kubectl auth #1590

fix: use aws eks get-token for kubectl auth #1590

schollii commented Sep 17, 2021

lisfo4ka Oct 12, 2021

daroga0002 Oct 12, 2021

schollii Oct 12, 2021 •

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lisfo4ka commented Oct 26, 2021 •

edited by antonbabenko

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Yasumoto commented Nov 8, 2021

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daroga0002 commented Nov 8, 2021

antonbabenko commented Nov 8, 2021

daroga0002 commented Nov 8, 2021

lisfo4ka commented Nov 23, 2021

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antonbabenko commented Jan 5, 2022

github-actions bot commented Nov 11, 2022

		@@ -219,7 +219,7 @@ variable "kubeconfig_aws_authenticator_env_variables" {
		variable "kubeconfig_name" {

fix: use aws eks get-token for kubectl auth #1590

fix: use aws eks get-token for kubectl auth #1590

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schollii commented Sep 17, 2021

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lisfo4ka commented Oct 18, 2021

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lisfo4ka commented Oct 26, 2021 •

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