鍵ポリシーを作成するときは、AWS IAM ポリシーに鍵ポリシーへのアクセスを許可する必要があります。鍵ポリシーでは、IAM ポリシーを使用する権限をアカウントに付与する必要があります。鍵ポリシーの権限がない場合、権限を許可する IAM ポリシーは機能しません。詳細については、AWS KMS での鍵ポリシーをご覧ください。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-08-30 UTC。"],[],[],null,["# Create an AWS KMS key\n\nOverview\n--------\n\nGKE on AWS uses customer-managed\n[AWS Key Management Service](https://docs.aws.amazon.com/kms/latest/developerguide/overview.html)\n(KMS) symmetric keys to encrypt:\n\n- Kubernetes state data in [etcd](https://kubernetes.io/docs/concepts/overview/components/#etcd)\n- EC2 instance [user data](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html)\n- EBS volumes for [at-rest encryption](/kubernetes-engine/multi-cloud/docs/aws/concepts/security#at-rest_data_encryption) of control plane and node pool data\n\nFor production environments, we recommend using different keys for configuration\nand volume encryption. To further minimize risks if a key is compromised, you\ncan also create different keys for each of the following:\n\n- Cluster control plane [configuration](/sdk/gcloud/reference/container/aws/clusters/create#--config-encryption-kms-key-arn)\n- Cluster control plane [database](/sdk/gcloud/reference/container/aws/clusters/create#--database-encryption-kms-key-arn)\n- Cluster control plane [main volume](/sdk/gcloud/reference/container/aws/clusters/create#--main-volume-kms-key-arn)\n- Cluster control plane [root volume](/sdk/gcloud/reference/container/aws/clusters/create#--root-volume-kms-key-arn)\n- Node pool [configuration](/sdk/gcloud/reference/container/aws/node-pools/create#--config-encryption-kms-key-arn)\n- Node pool [root volume](/sdk/gcloud/reference/container/aws/node-pools/create#--root-volume-kms-key-arn)\n\nFor additional security, you can create an AWS KMS key policy that assigns only\nthe minimum required set of permissions. For more information, see\n[Creating KMS keys with specific permissions](/kubernetes-engine/multi-cloud/docs/aws/how-to/create-aws-kms-key#specific-permissions).\n\nCreate an AWS KMS key\n---------------------\n\nTo create a key, run the following command: \n\n aws --region \u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-n\"\u003eAWS_REGION\u003c/span\u003e\u003c/var\u003e kms create-key \\\n --description \"\u003cvar translate=\"no\"\u003eKEY_DESC\u003c/var\u003e\"\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003eAWS_REGION\u003c/var\u003e with the name of your AWS region\n- \u003cvar translate=\"no\"\u003eKEY_DESC\u003c/var\u003e with a text description of your key\n\nFor each key you create, save the value named `KeyMetadata.Arn` in the output of\nthis command for later use.\n\nCreating KMS keys with specific permissions\n-------------------------------------------\n\nIf you create separate keys for different functions, you need to provide a\n[KMS key policy](https://docs.aws.amazon.com/kms/latest/developerguide/key-policies.html)\nfor each key that grants appropriate permissions on that key. If you don't\nspecify a key policy when you create a key, AWS KMS will create a default key\npolicy that gives all\n[principals](https://docs.aws.amazon.com/IAM/latest/UserGuide/intro-structure.html#intro-structure-principal)\nin the owning account unlimited access to all operations for the key.\n\nWhen you create a key policy, you must allow an AWS IAM policy access to the key\npolicy. The key policy must also give your account permissions to use IAM\npolicies. Without permission from the key policy, IAM policies that allow\npermissions have no effect. For more information, see\n[Key policies in AWS KMS](https://docs.aws.amazon.com/kms/latest/developerguide/iam-policies.html).\n\nThe following table describes the permissions for each of the\n[AWS IAM roles](/kubernetes-engine/multi-cloud/docs/aws/concepts/aws-iam-roles) GKE on AWS\nuses.\n\nWhat's next\n-----------\n\n- [Create an SSH key pair](/kubernetes-engine/multi-cloud/docs/aws/how-to/create-ssh-keypair)."]]
