Cloud DNS スコープは、限定公開 DNS リソースを Google Cloud オブジェクトに接続する柔軟な方法です。当初は、限定公開 DNS ゾーン、ポリシー、ピアリング ゾーンなどの限定公開 DNS リソースを Virtual Private Cloud（VPC）ネットワークにのみ接続できました。DNS スコープを使用すると、リソースを複数の Google Cloud ネットワークだけでなく、Google Kubernetes Engine（GKE）クラスタなど、より小さいグループにも接続できます。限定公開 DNS リソースをネットワークではなくスコープに接続できます。
Cloud DNS スコープを使用すると、限定公開 DNS リソースを VPC ネットワークと GKE クラスタに接続できます。ネットワーク内のような特定のスコープの境界内で、DNS のカスタムビューを作成できます。たとえば、単一のネットワーク内にある複数の GKE クラスタは、独自の cluster.local DNS 階層を持つことができます。
DNS 名を VPC ネットワーク全体で参照できるようにするか、GKE クラスタに限定するかによって、VPC スコープまたは GKE クラスタ スコープの DNS ゾーンを作成できます。
VPC スコープ。DNS 名を VPC ネットワーク全体で解決する必要がある場合は、このスコープを使用します。VPC スコープの DNS ゾーンを使用すると、VPC ネットワーク全体でグローバルに DNS 名を使用できます。
[[["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 2025-09-11 UTC。"],[[["\u003cp\u003eCloud DNS scopes enable the attachment of private DNS resources to multiple Google Cloud networks or specific groupings like GKE clusters, offering enhanced flexibility compared to the previous VPC network-only method.\u003c/p\u003e\n"],["\u003cp\u003eDNS scopes allow for custom DNS views within their boundaries, such as multiple GKE clusters in a single network having their own \u003ccode\u003ecluster.local\u003c/code\u003e DNS hierarchy.\u003c/p\u003e\n"],["\u003cp\u003eYou can establish either a VPC-scoped DNS zone for network-wide DNS resolution or a GKE cluster-scoped DNS zone to confine DNS name resolution to a single GKE cluster.\u003c/p\u003e\n"],["\u003cp\u003eDNS resolution follows a hierarchy, starting with the most specific scope (the GKE cluster) and progressively checking broader scopes if a zone is not found.\u003c/p\u003e\n"],["\u003cp\u003eScopes enable managed zones and response policies to be bound to selectors within the same scope, allowing for flexible configurations between multiple networks, GKE clusters, or a combination of both.\u003c/p\u003e\n"]]],[],null,["# Scopes and hierarchies\n\nCloud DNS scopes are a flexible way of attaching private DNS resources\nto Google Cloud objects. Originally, you could only attach private DNS\nresources such as private DNS zones, policies, and peering zones to\nVirtual Private Cloud (VPC) networks. By using DNS scopes, you can\nattach resources not only to multiple Google Cloud networks, but also to a\nsmaller grouping, such as a Google Kubernetes Engine (GKE) cluster. Instead\nof attaching private DNS resources to networks, you can attach private DNS\nresources to scopes.\n\nCloud DNS scopes let you attach a private DNS resource to a\nVPC network and a GKE cluster.\nWithin the boundaries of a particular scope, like in a network, you can create\na custom view of DNS. For example, multiple GKE clusters in a\nsingle network can have their own `cluster.local` DNS hierarchy.\n\nYou can create a VPC-scoped or a GKE cluster-scoped\nDNS zone depending on whether you want DNS names to be visible to the entire\nVPC network or limit them to a GKE cluster:\n\n- **VPC scope**. Use this scope when DNS names have to\n be resolved VPC network-wide. A VPC-scoped\n DNS zone lets DNS names be available globally to the entire\n VPC network.\n\n- **GKE cluster scope**. Cloud DNS lets you\n create a scope for a single GKE cluster.\n You can then create one or more private managed zones for each\n cluster, just like you can for networks. Queries from within that\n cluster first check to see if the query can be answered by a\n resource scoped to that specific GKE cluster. If not, queries\n fall back to normal matching, which starts by checking if the query can be\n answered by any network-scoped resources.\n\nScopes hierarchy\n----------------\n\nDNS resolution occurs at the most specific scope available, walking up the\nhierarchy when a zone is not found in a lower scope. The cluster is the most\nspecific scope, and Cloud DNS checks it first for a match.\n\nScopes also let [managed zones](/dns/docs/key-terms#dns-managed-zones) and\n[response policies](/dns/docs/key-terms#response-policy) bind to one or more\nselectors within the same scope (when applicable). You can configure a network\nand a scope to bind in the following ways:\n\n- Between multiple networks\n- Between a GKE cluster and a network\n- Between multiple networks and multiple GKE clusters\n\nAfter you bind a managed zone or response policy to a selector, it is visible to\nclients within the scope.\n\nTo learn how to configure a cluster-scoped Cloud DNS zone, see\n[Configure a GKE cluster scope](/dns/docs/zones/configure-scopes).\n\nWhat's next\n-----------\n\n- To find solutions for common issues that you might encounter when using Cloud DNS, see [Troubleshooting](/dns/docs/troubleshooting).\n- To learn more about Cloud DNS response policies, see [Manage response policies and rules](/dns/docs/zones/manage-response-policies).\n- To learn more about zones, see [Create, modify, and delete zones](/dns/docs/zones)."]]
