# ROSAKarpenterControllerPolicy
<a name="ROSAKarpenterControllerPolicy"></a>

**Description**: Provides permissions for the ROSA Karpenter controller to dynamically provision and manage EC2 instances for Red Hat OpenShift Service on AWS (ROSA) hosted control plane clusters. This includes EC2 fleet and instance lifecycle management, instance pricing queries, KMS operations for EBS volume encryption with customer-managed keys, and IAM instance profile management.

`ROSAKarpenterControllerPolicy` is an [AWS managed policy](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html#aws-managed-policies).

## Using this policy
<a name="ROSAKarpenterControllerPolicy-how-to-use"></a>

You can attach `ROSAKarpenterControllerPolicy` to your users, groups, and roles.

## Policy details
<a name="ROSAKarpenterControllerPolicy-details"></a>
+ **Type**: Service role policy 
+ **Creation time**: July 27, 2026, 16:42 UTC 
+ **Edited time:** July 27, 2026, 16:42 UTC
+ **ARN**: `arn:aws:iam::aws:policy/service-role/ROSAKarpenterControllerPolicy`

## Policy version
<a name="ROSAKarpenterControllerPolicy-version"></a>

**Policy version:** v1 (default)

The policy's default version is the version that defines the permissions for the policy. When a user or role with the policy makes a request to access an AWS resource, AWS checks the default version of the policy to determine whether to allow the request. 

## JSON policy document
<a name="ROSAKarpenterControllerPolicy-json"></a>

```
{
  "Version" : "2012-10-17",
  "Statement" : [
    {
      "Sid" : "ReadPermissions",
      "Effect" : "Allow",
      "Action" : [
        "ec2:DescribeAvailabilityZones",
        "ec2:DescribeCapacityReservations",
        "ec2:DescribeImages",
        "ec2:DescribeInstances",
        "ec2:DescribeInstanceTypeOfferings",
        "ec2:DescribeInstanceTypes",
        "ec2:DescribeLaunchTemplates",
        "ec2:DescribeSecurityGroups",
        "ec2:DescribeSnapshots",
        "ec2:DescribeSpotPriceHistory",
        "ec2:DescribeSubnets",
        "ec2:DescribeVpcs"
      ],
      "Resource" : "*"
    },
    {
      "Sid" : "PricingReadActions",
      "Effect" : "Allow",
      "Action" : [
        "pricing:GetProducts"
      ],
      "Resource" : "*"
    },
    {
      "Sid" : "DescribeKMSKeysForEBSVolumeEncryption",
      "Effect" : "Allow",
      "Action" : "kms:DescribeKey",
      "Resource" : "arn:aws:kms:*:*:key/*",
      "Condition" : {
        "StringEquals" : {
          "aws:ResourceTag/red-hat" : "true"
        },
        "StringLike" : {
          "kms:ViaService" : "ec2.*.amazonaws.com"
        }
      }
    },
    {
      "Sid" : "CryptoOpsForEBSVolumeEncryption",
      "Effect" : "Allow",
      "Action" : [
        "kms:Decrypt",
        "kms:ReEncryptFrom",
        "kms:ReEncryptTo",
        "kms:GenerateDataKeyWithoutPlaintext"
      ],
      "Resource" : "arn:aws:kms:*:*:key/*",
      "Condition" : {
        "StringEquals" : {
          "aws:ResourceTag/red-hat" : "true"
        },
        "StringLike" : {
          "kms:ViaService" : "ec2.*.amazonaws.com"
        },
        "ForAllValues:StringEquals" : {
          "kms:EncryptionContextKeys" : [
            "aws:ebs:id"
          ]
        }
      }
    },
    {
      "Sid" : "CreateGrantForEBSVolumeEncryption",
      "Effect" : "Allow",
      "Action" : "kms:CreateGrant",
      "Resource" : "arn:aws:kms:*:*:key/*",
      "Condition" : {
        "Bool" : {
          "kms:GrantIsForAWSResource" : true
        },
        "StringLike" : {
          "kms:ViaService" : "ec2.*.amazonaws.com"
        },
        "StringEquals" : {
          "kms:GrantConstraintType" : "EncryptionContextSubset"
        },
        "ForAllValues:StringEquals" : {
          "kms:GrantOperations" : [
            "Decrypt",
            "GenerateDataKeyWithoutPlaintext",
            "ReEncryptFrom",
            "ReEncryptTo"
          ],
          "kms:EncryptionContextKeys" : [
            "aws:ebs:id"
          ]
        }
      }
    },
    {
      "Sid" : "CreateEC2Resources",
      "Effect" : "Allow",
      "Action" : [
        "ec2:RunInstances",
        "ec2:CreateFleet"
      ],
      "Resource" : [
        "arn:aws:ec2:*:*:security-group/*",
        "arn:aws:ec2:*:*:subnet/*",
        "arn:aws:ec2:*:*:capacity-reservation/*"
      ]
    },
    {
      "Sid" : "CreateEC2ResourcesWithApprovedAMIs",
      "Effect" : "Allow",
      "Action" : [
        "ec2:RunInstances",
        "ec2:CreateFleet"
      ],
      "Resource" : "arn:aws:ec2:*::image/*",
      "Condition" : {
        "StringEquals" : {
          "ec2:Owner" : [
            "531415883065",
            "251351625822",
            "210686502322"
          ]
        }
      }
    },
    {
      "Sid" : "CreateEC2ResourcesWithTags",
      "Effect" : "Allow",
      "Action" : [
        "ec2:RunInstances",
        "ec2:CreateFleet",
        "ec2:CreateLaunchTemplate"
      ],
      "Resource" : [
        "arn:aws:ec2:*:*:fleet/*",
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*",
        "arn:aws:ec2:*:*:network-interface/*",
        "arn:aws:ec2:*:*:launch-template/*",
        "arn:aws:ec2:*:*:spot-instances-request/*"
      ],
      "Condition" : {
        "StringEquals" : {
          "aws:RequestTag/red-hat-managed" : "true"
        }
      }
    },
    {
      "Sid" : "CreateEC2ResourcesLaunchTemplate",
      "Effect" : "Allow",
      "Action" : [
        "ec2:RunInstances",
        "ec2:CreateFleet"
      ],
      "Resource" : "arn:aws:ec2:*:*:launch-template/*",
      "Condition" : {
        "StringEquals" : {
          "aws:ResourceTag/red-hat-managed" : "true"
        }
      }
    },
    {
      "Sid" : "CreateTagsOnResources",
      "Effect" : "Allow",
      "Action" : [
        "ec2:CreateTags"
      ],
      "Resource" : [
        "arn:aws:ec2:*:*:fleet/*",
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:volume/*",
        "arn:aws:ec2:*:*:network-interface/*",
        "arn:aws:ec2:*:*:launch-template/*",
        "arn:aws:ec2:*:*:spot-instances-request/*"
      ],
      "Condition" : {
        "StringEquals" : {
          "ec2:CreateAction" : [
            "RunInstances",
            "CreateFleet",
            "CreateLaunchTemplate"
          ],
          "aws:RequestTag/red-hat-managed" : "true"
        }
      }
    },
    {
      "Sid" : "ManageTagsOnManagedResources",
      "Effect" : "Allow",
      "Action" : [
        "ec2:CreateTags"
      ],
      "Resource" : "arn:aws:ec2:*:*:instance/*",
      "Condition" : {
        "StringEquals" : {
          "aws:ResourceTag/red-hat-managed" : "true"
        }
      }
    },
    {
      "Sid" : "TerminateManagedResources",
      "Effect" : "Allow",
      "Action" : [
        "ec2:TerminateInstances",
        "ec2:DeleteLaunchTemplate"
      ],
      "Resource" : [
        "arn:aws:ec2:*:*:instance/*",
        "arn:aws:ec2:*:*:launch-template/*"
      ],
      "Condition" : {
        "StringEquals" : {
          "aws:ResourceTag/red-hat-managed" : "true"
        }
      }
    },
    {
      "Sid" : "PassInstanceRole",
      "Effect" : "Allow",
      "Action" : [
        "iam:PassRole"
      ],
      "Resource" : "arn:aws:iam::*:role/*-ROSA-Worker-Role",
      "Condition" : {
        "StringEquals" : {
          "iam:PassedToService" : [
            "ec2.amazonaws.com"
          ]
        }
      }
    },
    {
      "Sid" : "ManageInstanceProfiles",
      "Effect" : "Allow",
      "Action" : [
        "iam:AddRoleToInstanceProfile",
        "iam:RemoveRoleFromInstanceProfile",
        "iam:DeleteInstanceProfile"
      ],
      "Resource" : [
        "arn:aws:iam::*:instance-profile/rosa-service-managed-*"
      ]
    },
    {
      "Sid" : "CreateInstanceProfiles",
      "Effect" : "Allow",
      "Action" : [
        "iam:CreateInstanceProfile",
        "iam:TagInstanceProfile"
      ],
      "Resource" : [
        "arn:aws:iam::*:instance-profile/rosa-service-managed-*"
      ],
      "Condition" : {
        "StringEquals" : {
          "aws:RequestTag/red-hat-managed" : "true"
        }
      }
    },
    {
      "Sid" : "ReadInstanceProfiles",
      "Effect" : "Allow",
      "Action" : [
        "iam:GetInstanceProfile",
        "iam:ListInstanceProfiles"
      ],
      "Resource" : "*"
    }
  ]
}
```

## Learn more
<a name="ROSAKarpenterControllerPolicy-learn-more"></a>
+ [Create a permission set using AWS managed policies in IAM Identity Center](https://docs.aws.amazon.com/singlesignon/latest/userguide/howtocreatepermissionset.html) 
+ [Adding and removing IAM identity permissions](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_manage-attach-detach.html) 
+ [Understand versioning for IAM policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-versioning.html)
+ [Get started with AWS managed policies and move toward least-privilege permissions](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#bp-use-aws-defined-policies)

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Managed Policy. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query aws-managed-policy` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).