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  2. ›Google Cloud
  3. ›Google Kubernetes Engine
  4. ›Update

Known issue•Oct 6, 2026

Starting with GKE version 1.36, the default engine for kube-dns is CoreDNS.

Google Kubernetes EngineGCP · Containers

Starting with GKE version 1.36, the default engine for kube-dns is CoreDNS. For Pod IP DNS queries in the <a-b-c-d>.<namespace>.pod.cluster.local format, CoreDNS returns NXDOMAIN if the specified <namespace> does not exist. The legacy kubernetes/dns implementation skipped checking the existence of the namespace provided in the <namespace> segment in these queries.

Queries in the <a-b-c-d>.<namespace>.pod.cluster.local format are not part of the Kubernetes DNS specification. We can't guarantee that uses outside of those specified in the DNS spec will remain consistent across releases.

Mitigation:

  • Recommended: Migrate to supported headless Service DNS records (<hostname>.<subdomain>.<namespace>.svc.cluster.local).
  • Workaround: Ensure the <namespace> specified in the DNS query exists in the cluster.

Read the original announcement↗

More from Google Kubernetes Engine

All Google Kubernetes Engine updates →

  1. Backup for GKE is now available in the following region: asia-southeast3 (Bangkok, Thailand).

    For more information, see Backup for GKE locations.

    Google Kubernetes Engine•Region•Oct 12, 2026

  2. (2026-R43) Security updates

    This release includes new GKE versions that use updated Container-Optimized OS images. These updated images are cumulative, incorporating security fixes from all Container-Optimized OS versions released since the previous GKE release.

    Google Kubernetes Engine•Security•Oct 8, 2026

  3. (2026-R43) Version updates

    Note: Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones.

    Google Kubernetes Engine•Feature•Oct 8, 2026

  4. (2026-R43) Version updates

    Note: Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones.

    Google Kubernetes Engine•Feature•Oct 8, 2026

  5. (2026-R43) Version updates

    Note: Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones.

    Google Kubernetes Engine•Feature•Oct 8, 2026