feat: Add support for Karpenter v1 controller IAM role permissions (#3126)

* chore: update controller IAM role permissions to support karpenter v1

* Update versions.tf

* Revert "Update versions.tf"

This reverts commit f0e5c79.

* fix: Add support for both v1 and prior to v1 controller permission policy

---------

Co-authored-by: Bryant Biggs <[email protected]>

Author: andy-townsend

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/antonbabenko/pre-commit-terraform
-    rev: v1.92.1
+    rev: v1.92.2
     hooks:
       - id: terraform_fmt
       - id: terraform_docs

examples/karpenter/main.tf

@@ -126,6 +126,8 @@ module "karpenter" {
 
   cluster_name = module.eks.cluster_name
 
+  enable_v1_permissions = true
+
   enable_pod_identity             = true
   create_pod_identity_association = true
 
@@ -155,7 +157,7 @@ resource "helm_release" "karpenter" {
   repository_username = data.aws_ecrpublic_authorization_token.token.user_name
   repository_password = data.aws_ecrpublic_authorization_token.token.password
   chart               = "karpenter"
-  version             = "0.37.0"
+  version             = "1.0.0"
   wait                = false
 
   values = [

modules/karpenter/README.md

@@ -121,6 +121,8 @@ No modules.
 | [aws_iam_policy_document.controller_assume_role](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.node_assume_role](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.queue](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
+| [aws_iam_policy_document.v033](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
+| [aws_iam_policy_document.v1](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_partition.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/partition) | data source |
 | [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
 
@@ -141,6 +143,7 @@ No modules.
 | <a name="input_enable_irsa"></a> [enable\_irsa](#input\_enable\_irsa) | Determines whether to enable support for IAM role for service accounts | `bool` | `false` | no |
 | <a name="input_enable_pod_identity"></a> [enable\_pod\_identity](#input\_enable\_pod\_identity) | Determines whether to enable support for EKS pod identity | `bool` | `true` | no |
 | <a name="input_enable_spot_termination"></a> [enable\_spot\_termination](#input\_enable\_spot\_termination) | Determines whether to enable native spot termination handling | `bool` | `true` | no |
+| <a name="input_enable_v1_permissions"></a> [enable\_v1\_permissions](#input\_enable\_v1\_permissions) | Determines whether to enable permissions suitable for v1+ (`true`) or for v0.33.x-v0.37.x (`false`) | `bool` | `false` | no |
 | <a name="input_iam_policy_description"></a> [iam\_policy\_description](#input\_iam\_policy\_description) | IAM policy description | `string` | `"Karpenter controller IAM policy"` | no |
 | <a name="input_iam_policy_name"></a> [iam\_policy\_name](#input\_iam\_policy\_name) | Name of the IAM policy | `string` | `"KarpenterController"` | no |
 | <a name="input_iam_policy_path"></a> [iam\_policy\_path](#input\_iam\_policy\_path) | Path of the IAM policy | `string` | `"/"` | no |

modules/karpenter/main.tf

@@ -84,346 +84,7 @@ resource "aws_iam_role" "controller" {
 data "aws_iam_policy_document" "controller" {
   count = local.create_iam_role ? 1 : 0
 
-  statement {
-    sid = "AllowScopedEC2InstanceActions"
-    resources = [
-      "arn:${local.partition}:ec2:*::image/*",
-      "arn:${local.partition}:ec2:*::snapshot/*",
-      "arn:${local.partition}:ec2:*:*:spot-instances-request/*",
-      "arn:${local.partition}:ec2:*:*:security-group/*",
-      "arn:${local.partition}:ec2:*:*:subnet/*",
-      "arn:${local.partition}:ec2:*:*:launch-template/*",
-    ]
-
-    actions = [
-      "ec2:RunInstances",
-      "ec2:CreateFleet"
-    ]
-  }
-
-  statement {
-    sid = "AllowScopedEC2InstanceActionsWithTags"
-    resources = [
-      "arn:${local.partition}:ec2:*:*:fleet/*",
-      "arn:${local.partition}:ec2:*:*:instance/*",
-      "arn:${local.partition}:ec2:*:*:volume/*",
-      "arn:${local.partition}:ec2:*:*:network-interface/*",
-      "arn:${local.partition}:ec2:*:*:launch-template/*",
-      "arn:${local.partition}:ec2:*:*:spot-instances-request/*",
-    ]
-    actions = [
-      "ec2:RunInstances",
-      "ec2:CreateFleet",
-      "ec2:CreateLaunchTemplate"
-    ]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:RequestTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:RequestTag/karpenter.sh/nodepool"
-      values   = ["*"]
-    }
-  }
-
-  statement {
-    sid = "AllowScopedResourceCreationTagging"
-    resources = [
-      "arn:${local.partition}:ec2:*:*:fleet/*",
-      "arn:${local.partition}:ec2:*:*:instance/*",
-      "arn:${local.partition}:ec2:*:*:volume/*",
-      "arn:${local.partition}:ec2:*:*:network-interface/*",
-      "arn:${local.partition}:ec2:*:*:launch-template/*",
-      "arn:${local.partition}:ec2:*:*:spot-instances-request/*",
-    ]
-    actions = ["ec2:CreateTags"]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:RequestTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringEquals"
-      variable = "ec2:CreateAction"
-      values = [
-        "RunInstances",
-        "CreateFleet",
-        "CreateLaunchTemplate",
-      ]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:RequestTag/karpenter.sh/nodepool"
-      values   = ["*"]
-    }
-  }
-
-  statement {
-    sid       = "AllowScopedResourceTagging"
-    resources = ["arn:${local.partition}:ec2:*:*:instance/*"]
-    actions   = ["ec2:CreateTags"]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:ResourceTag/karpenter.sh/nodepool"
-      values   = ["*"]
-    }
-
-    condition {
-      test     = "ForAllValues:StringEquals"
-      variable = "aws:TagKeys"
-      values = [
-        "karpenter.sh/nodeclaim",
-        "Name",
-      ]
-    }
-  }
-
-  statement {
-    sid = "AllowScopedDeletion"
-    resources = [
-      "arn:${local.partition}:ec2:*:*:instance/*",
-      "arn:${local.partition}:ec2:*:*:launch-template/*"
-    ]
-
-    actions = [
-      "ec2:TerminateInstances",
-      "ec2:DeleteLaunchTemplate"
-    ]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:ResourceTag/karpenter.sh/nodepool"
-      values   = ["*"]
-    }
-  }
-
-  statement {
-    sid       = "AllowRegionalReadActions"
-    resources = ["*"]
-    actions = [
-      "ec2:DescribeAvailabilityZones",
-      "ec2:DescribeImages",
-      "ec2:DescribeInstances",
-      "ec2:DescribeInstanceTypeOfferings",
-      "ec2:DescribeInstanceTypes",
-      "ec2:DescribeLaunchTemplates",
-      "ec2:DescribeSecurityGroups",
-      "ec2:DescribeSpotPriceHistory",
-      "ec2:DescribeSubnets"
-    ]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:RequestedRegion"
-      values   = [local.region]
-    }
-  }
-
-  statement {
-    sid       = "AllowSSMReadActions"
-    resources = coalescelist(var.ami_id_ssm_parameter_arns, ["arn:${local.partition}:ssm:${local.region}::parameter/aws/service/*"])
-    actions   = ["ssm:GetParameter"]
-  }
-
-  statement {
-    sid       = "AllowPricingReadActions"
-    resources = ["*"]
-    actions   = ["pricing:GetProducts"]
-  }
-
-  dynamic "statement" {
-    for_each = local.enable_spot_termination ? [1] : []
-
-    content {
-      sid       = "AllowInterruptionQueueActions"
-      resources = [try(aws_sqs_queue.this[0].arn, null)]
-      actions = [
-        "sqs:DeleteMessage",
-        "sqs:GetQueueAttributes",
-        "sqs:GetQueueUrl",
-        "sqs:ReceiveMessage"
-      ]
-    }
-  }
-
-  statement {
-    sid       = "AllowPassingInstanceRole"
-    resources = var.create_node_iam_role ? [aws_iam_role.node[0].arn] : [var.node_iam_role_arn]
-    actions   = ["iam:PassRole"]
-
-    condition {
-      test     = "StringEquals"
-      variable = "iam:PassedToService"
-      values   = ["ec2.amazonaws.com"]
-    }
-  }
-
-  statement {
-    sid       = "AllowScopedInstanceProfileCreationActions"
-    resources = ["*"]
-    actions   = ["iam:CreateInstanceProfile"]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:RequestTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:RequestTag/topology.kubernetes.io/region"
-      values   = [local.region]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:RequestTag/karpenter.k8s.aws/ec2nodeclass"
-      values   = ["*"]
-    }
-  }
-
-  statement {
-    sid       = "AllowScopedInstanceProfileTagActions"
-    resources = ["*"]
-    actions   = ["iam:TagInstanceProfile"]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/topology.kubernetes.io/region"
-      values   = [local.region]
-    }
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:RequestTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/topology.kubernetes.io/region"
-      values   = [local.region]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:ResourceTag/karpenter.k8s.aws/ec2nodeclass"
-      values   = ["*"]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:RequestTag/karpenter.k8s.aws/ec2nodeclass"
-      values   = ["*"]
-    }
-  }
-
-  statement {
-    sid       = "AllowScopedInstanceProfileActions"
-    resources = ["*"]
-    actions = [
-      "iam:AddRoleToInstanceProfile",
-      "iam:RemoveRoleFromInstanceProfile",
-      "iam:DeleteInstanceProfile"
-    ]
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/kubernetes.io/cluster/${var.cluster_name}"
-      values   = ["owned"]
-    }
-
-    condition {
-      test     = "StringEquals"
-      variable = "aws:ResourceTag/topology.kubernetes.io/region"
-      values   = [local.region]
-    }
-
-    condition {
-      test     = "StringLike"
-      variable = "aws:ResourceTag/karpenter.k8s.aws/ec2nodeclass"
-      values   = ["*"]
-    }
-  }
-
-  statement {
-    sid       = "AllowInstanceProfileReadActions"
-    resources = ["*"]
-    actions   = ["iam:GetInstanceProfile"]
-  }
-
-  statement {
-    sid       = "AllowAPIServerEndpointDiscovery"
-    resources = ["arn:${local.partition}:eks:${local.region}:${local.account_id}:cluster/${var.cluster_name}"]
-    actions   = ["eks:DescribeCluster"]
-  }
-
-  dynamic "statement" {
-    for_each = var.iam_policy_statements
-
-    content {
-      sid           = try(statement.value.sid, null)
-      actions       = try(statement.value.actions, null)
-      not_actions   = try(statement.value.not_actions, null)
-      effect        = try(statement.value.effect, null)
-      resources     = try(statement.value.resources, null)
-      not_resources = try(statement.value.not_resources, null)
-
-      dynamic "principals" {
-        for_each = try(statement.value.principals, [])
-
-        content {
-          type        = principals.value.type
-          identifiers = principals.value.identifiers
-        }
-      }
-
-      dynamic "not_principals" {
-        for_each = try(statement.value.not_principals, [])
-
-        content {
-          type        = not_principals.value.type
-          identifiers = not_principals.value.identifiers
-        }
-      }
-
-      dynamic "condition" {
-        for_each = try(statement.value.conditions, [])
-
-        content {
-          test     = condition.value.test
-          values   = condition.value.values
-          variable = condition.value.variable
-        }
-      }
-    }
-  }
+  source_policy_documents = var.enable_v1_permissions ? [data.aws_iam_policy_document.v1[0].json] : [data.aws_iam_policy_document.v033[0].json]
 }
 
 resource "aws_iam_policy" "controller" {