Introducing OpenShift Service Mesh 3.1

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2025-08-05 ~1 min read www.redhat.com #openshift

⚡ TL;DR

Introducing OpenShift Service Mesh 3.1 Upgrading to OpenShift Service Mesh 3.1 Kubernetes Gateway API support in OCP 4.19+ Generally available dual-stack support for x86 clusters Moving to UBI Micro containers Toward a sidecar-less service mesh: Istio's ambient mode Kiali updates Mesh Page Updates Performance and scalability with large meshes Get started with OpenShift Service Mesh Red Hat OpenShift Container Platform | Product Trial About the author Jamie Longmuir More like this Blog post Blog post Blog post Keep exploring Browse by channel Automation Artificial intelligence Open hybrid cloud Security Edge computing Infrastructure Applications Virtualization Share Red Hat OpenShift Service Mesh 3.1 has been released and is included with the Red Hat OpenShift Container Platform and Red Hat OpenShift Platform Plus. Based on the Istio, Envoy, and Kiali projects, this release updates the version of Istio to 1.26 and Kiali to 2.11 , and is supported on OpenShift Container Platform 4.16 and above.

📝 Summary

Introducing OpenShift Service Mesh 3.1 Upgrading to OpenShift Service Mesh 3.1 Kubernetes Gateway API support in OCP 4.19+ Generally available dual-stack support for x86 clusters Moving to UBI Micro containers Toward a sidecar-less service mesh: Istio's ambient mode Kiali updates Mesh Page Updates Performance and scalability with large meshes Get started with OpenShift Service Mesh Red Hat OpenShift Container Platform | Product Trial About the author Jamie Longmuir More like this Blog post Blog post Blog post Keep exploring Browse by channel Automation Artificial intelligence Open hybrid cloud Security Edge computing Infrastructure Applications Virtualization Share Red Hat OpenShift Service Mesh 3.1 has been released and is included with the Red Hat OpenShift Container Platform and Red Hat OpenShift Platform Plus. Based on the Istio, Envoy, and Kiali projects, this release updates the version of Istio to 1.26 and Kiali to 2.11 , and is supported on OpenShift Container Platform 4.16 and above. This is the first minor release following Red Hat OpenShift Service Mesh 3.0, a major update to converge OpenShift Service Mesh with the community Istio project, with installation and management using the Sail operator. This change helps ensure that OpenShift Service Mesh can offer the latest stable Istio features with Red Hat support. If you are running OpenShift Service Mesh 2.6 or earlier releases, you must upgrade to OpenShift Service Mesh 3.0 before upgrading to 3.1. We recommend migrating to OpenShift Service Mesh 3.0 promptly, because version 2.6 reaches its end of life on March 12, 2026. An in-depth migration guide is provided in the OpenShift Service Mesh 3.0 documentation , including an analysis of the differences between OpenShift Service Mesh 2.6 and 3.0. We've also recently published an article that describes how to use the Kiali console for migrating between OpenShift Service Mesh 2.6 and 3.0. For an example of OpenShift Service Mesh 3.0 in action, with fully configured metrics and the Kiali console, see this solution pattern. Kubernetes Gateway API is the next generation of Kubernetes Ingress, load balancer, and service mesh APIs. Istio plans to make it the default set of APIs for creating and managing traffic using a service mesh, and it is required for using Istio's ambient mode. Note that there are no plans to remove the stable Istio APIs, such as VirtualService, DestinationRule, and others.