Change8

Istio

Backend & Infra

Connect, secure, control, and observe services.

Latest: 1.28.454 releases10 common errorsView on GitHub

Release History

1.28.4
Feb 16, 2026

This release provides artifacts and detailed release notes for Istio version 1.28.4.

1.27.7
Feb 16, 2026

This release provides artifacts and detailed release notes for Istio version 1.27.7.

1.29.0
Feb 16, 2026

This release announcement provides links to the artifacts and detailed release notes for Istio version 1.29.0.

1.29.0-rc.3
Feb 11, 2026

This release, version 1.29.0-rc.3, provides artifacts for testing and review.

1.27.6
Feb 10, 2026

This release provides patch updates for Istio version 1.27.6. Refer to the linked release notes for specific details.

1.29.0-rc.2
Feb 10, 2026

This release (1.29.0-rc.2) provides artifacts for review, with no specific functional changes detailed in these notes.

1.29.0-rc.1
Feb 2, 2026

This release is an RC build (1.29.0-rc.1) and provides access to the release artifacts.

1.29.0-rc.0
Jan 29, 2026

This release is an RC (Release Candidate) for version 1.29.0 of Istio, with artifacts available at the provided link.

1.29.0-beta.0
Jan 23, 2026

This release is a beta version (1.29.0-beta.0) and provides access to the artifacts via GCS.

1.28.32 fixes
Jan 20, 2026

Istio 1.28.3 is a patch release addressing critical bugs related to Envoy configuration validation and HTTP/2 stream stability under load.

1.29.0-alpha.0
Jan 13, 2026

This release, 1.29.0-alpha.0, provides access to the artifacts for this alpha version.

1.28.2
Dec 22, 2025

This release (1.28.2) provides artifacts and detailed release notes for the Istio 1.28.2 patch version.

1.27.5
Dec 22, 2025

This release provides patch updates for Istio version 1.27.5. Refer to the linked release notes for specific details.

1.26.8
Dec 22, 2025

This release provides artifacts and detailed release notes for Istio version 1.26.8.

1.26.7
Dec 4, 2025

This release provides artifacts and detailed release notes for Istio version 1.26.7.

1.27.4
Dec 4, 2025

This release (1.27.4) provides artifacts and detailed release notes for the Istio 1.27.4 patch version.

1.28.1
Dec 4, 2025

This release provides artifacts and detailed release notes for Istio version 1.28.1.

1.28.0
Nov 5, 2025

This release announcement provides links to the artifacts and detailed release notes for Istio version 1.28.0.

1.28.0-rc.1
Oct 30, 2025

This release is Istio 1.28.0-rc.1, providing release candidate artifacts and associated release notes.

1.28.0-rc.0
Oct 28, 2025

This release is an RC (Release Candidate) version 1.28.0-rc.0 of Istio, with links provided to artifacts and detailed release notes.

1.28.0-beta.1
Oct 23, 2025

This release is Istio 1.28.0-beta.1. Links to artifacts and detailed release notes are provided.

1.28.0-beta.0
Oct 22, 2025

This release announces the availability of Istio version 1.28.0-beta.0, with artifacts and detailed release notes linked.

1.28.0-alpha.0
Oct 20, 2025

This release announces the availability of Istio version 1.28.0-alpha.0, with links provided to the artifacts and detailed release notes.

1.27.3
Oct 20, 2025

This release (1.27.3) provides maintenance updates for the Istio 1.27 series. Specific details are available via the provided release notes link.

1.26.61 fix
Oct 20, 2025

Istio 1.26.6 is a patch release addressing a bug related to sidecar injection failure in specific Kubernetes environments.

1.27.2
Oct 13, 2025

This release provides artifacts and links to the release notes for Istio version 1.27.2.

1.26.5
Oct 13, 2025

This release (1.26.5) provides maintenance updates for the Istio 1.26 series. Refer to the linked release notes for details.

1.27.1
Sep 3, 2025

This release appears to be a patch release (1.27.1) for Istio, with links provided for artifacts and detailed release notes.

1.26.4
Sep 3, 2025

This release provides artifacts and detailed release notes for Istio version 1.26.4.

1.25.5
Sep 3, 2025

This release provides artifacts and detailed release notes for Istio version 1.25.5.

1.27.0
Aug 12, 2025

This release announcement provides links to the artifacts and detailed release notes for Istio version 1.27.0.

1.25.4
Aug 8, 2025

This release provides artifacts and detailed release notes for Istio version 1.25.4.

1.27.0-rc.0
Aug 4, 2025

This release is an RC (Release Candidate) version 1.27.0-rc.0 of Istio, with links provided to artifacts and detailed release notes.

1.26.3
Jul 29, 2025

This release provides artifacts and detailed release notes for Istio version 1.26.3.

1.27.0-beta.0
Jul 29, 2025

This release is a beta version (1.27.0-beta.0) of Istio, with artifacts and detailed release notes available via the provided links.

1.26.2
Jun 20, 2025

This release provides artifacts and detailed release notes for Istio version 1.26.2.

1.26.1
May 29, 2025

This release provides artifacts and detailed release notes for Istio version 1.26.1.

1.25.3
May 13, 2025

This release provides artifacts and detailed release notes for Istio version 1.25.3.

1.24.61 fix
May 13, 2025

Istio 1.24.6 is a patch release that primarily addresses a bug related to sidecar injection failure in specific Kubernetes environments.

1.26.0
May 8, 2025

This release is Istio 1.26.0. Refer to the provided links for detailed release notes and artifacts.

1.26.0-rc.0
Apr 30, 2025

This release is Istio version 1.26.0-rc.0. Links to artifacts and detailed release notes are provided.

1.26.0-beta.0
Apr 18, 2025

This release announces the beta version 1.26.0-beta.0 of Istio, with links provided to artifacts and detailed release notes.

1.26.0-alpha.0
Apr 16, 2025

This release announces the alpha version 1.26.0-alpha.0 of Istio, with links provided to artifacts and detailed release notes.

1.25.2
Apr 14, 2025

This release provides artifacts and detailed release notes for Istio version 1.25.2.

1.24.5
Apr 14, 2025

This release (1.24.5) provides maintenance updates for the Istio 1.24 series. Specific details are available via the provided release notes link.

1.23.6
Apr 7, 2025

This release (1.23.6) provides maintenance updates for the Istio 1.23 series. Links to artifacts and detailed release notes are provided.

1.25.1
Mar 26, 2025

This release (1.25.1) provides artifacts and detailed release notes for the Istio 1.25.1 patch version.

1.24.4
Mar 25, 2025

This release provides artifacts and detailed release notes for Istio version 1.24.4.

1.25.0
Mar 4, 2025

This release announcement provides links to the artifacts and detailed release notes for Istio version 1.25.0.

1.25.0-rc.1
Feb 24, 2025

This release is version 1.25.0-rc.1 of Istio. Links to artifacts and detailed release notes are provided.

1.25.0-rc.0
Feb 21, 2025

This release is version 1.25.0-rc.0 of Istio, with artifacts and detailed release notes available via the provided links.

1.24.3
Feb 14, 2025

This release provides artifacts and detailed release notes for Istio version 1.24.3.

1.23.5
Feb 13, 2025

This release provides artifacts and detailed release notes for Istio version 1.23.5.

1.22.8
Jan 23, 2025

This release (1.22.8) provides artifacts and detailed release notes for the Istio 1.22 maintenance branch.

Common Errors

SanTrustDomainError1 report

The "SanTrustDomainError" in Istio usually occurs when the trust domain aliases are not properly configured or propagated across clusters, leading to misidentification of service identities. To fix, ensure that the `trustDomainAliases` field in the Istio MeshConfig is correctly set in each cluster, reflecting all trust domains involved in multicluster communication; then verify that istiod has successfully propagated this configuration to all relevant components, including ztunnel in ambient mesh.

WeightedClusterValidationError1 report

The "WeightedClusterValidationError" in Istio usually occurs due to incorrect or missing weight definitions in VirtualService configurations, specifically when routing traffic to multiple destination services. To fix this, carefully examine your VirtualService's `http.route.weight` specifications, ensuring that all weights are non-negative integers, and that the sum of weights for a given route matches your intended traffic distribution; invalid weights or missing weights for some routes will trigger this error.

KillPodSandboxError1 report

KillPodSandboxError usually arises when the pod's termination grace period is insufficient for Istio CNI to complete cleanup tasks like detaching the pod from the Istio network. Increasing the `terminationGracePeriodSeconds` value in your pod or deployment specification allows Istio CNI more time to finalize network detachment before the pod is forcibly terminated, resolving the error. Alternatively, ensure that Istio CNI has adequate resources allocated to perform its operations without timeout.

RouteConfigurationValidationError1 report

The "RouteConfigurationValidationError" in Istio usually arises from inconsistencies or invalid configurations within your VirtualService or related Istio resources (e.g., Gateway, DestinationRule) that conflict with Envoy's requirements. To fix it, carefully review your Istio configuration files for syntax errors, incorrect routing rules, or incompatible settings, and validate them against Istio's official documentation and Envoy's API reference to ensure they are valid and consistent. Then, apply the corrected configuration using `kubectl apply -f your-istio-config.yaml`.

ZipkinConfigValidationError1 report

This error commonly arises when the Istio installation's Zipkin configuration schema is incompatible with the deployed Zipkin service's version. Fix it by either upgrading your Istio installation to a version that supports your Zipkin instance or by modifying your Istio configuration to match the compatible Zipkin schema and API version by editing the `values.yaml` file used for Istio deployment. Validate your modified configuration with `istioctl analyze` before applying.

HttpServiceValidationError1 report

The "HttpServiceValidationError" in Istio usually occurs due to inconsistencies or misconfigurations between your Istio configuration and the actual services running in your cluster, often stemming from incorrect service names, ports, or protocols defined in ServiceEntries, VirtualServices, or Gateways. To fix it, carefully review your Istio configurations (especially ServiceEntries) and ensure the service names, ports, and protocols match the exposed services and their corresponding Kubernetes Services' definitions; verify spelling and restart the Istio proxy if needed.

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