For an overview of OpenShift Serverless functionality, see Understanding OpenShift Serverless.

Getting support

If you experience difficulty with a procedure described in this documentation, visit the Customer Portal to learn more about support for Technology Preview features.

Release Notes for Red Hat OpenShift Serverless Technology Preview 1.1.0

New features

  • OpenShift Serverless has been updated to use Knative Serving 0.8.1.

  • Enhanced Operator metadata now includes more information regarding support state and a link to the official installation documentation.

  • A developer preview version of Knative Eventing is now available for use with OpenShift Serverless, however this is not included in the OpenShift Serverless Operator and is not currently supported as part of this Technology Preview. For more information, see Knative Eventing on OpenShift Container Platform.

Fixed issues

  • Users who were not project administrators would previously see the following error when using OpenShift Serverless:

    revisions.serving.knative.dev: User "sounds" cannot list resource "revisions

    This issue has now been fixed with the addition of new RBAC rules.

  • A race condition was preventing Istio sidecar injection from working correctly. Istio did not consider the knative-serving namespace to be present in the ServiceMeshMemberRoll at the time of Pod creation. Istio now waits for status information from ServiceMeshMemberRoll which fixes this issue.

Known issues

  • Users may see the error Unknown Uninitialized : Waiting for VirtualService to be ready while waiting for a service in a newly created namespace to be ready, which can take several minutes. If a user allows enough time between the creation of a namespace and the creation of a service in the namespace (approximately one minute), this error may be avoided.

  • Existing Knative Services and Routes which have been created with public visibility cannot be updated to cluster-local visibility. If you require cluster-local visibility on Knative Services and Routes, this must be configured at the time of creating these resources.

  • Knative service returns a 503 status code when the cluster is running for a long time. The Knative Serving Pods do not show any errors. Restarting the istio-pilot Pod temporarily fixes the issue.

  • gRPC and HTTP2 do not work against routes. This is a known limitation of OpenShift routes.

Release Notes for Red Hat OpenShift Serverless Technology Preview 1.0.0

New features

This release of OpenShift Serverless introduces the OpenShift Serverless Operator, which supports Knative Serving 0.7.1 and is tested for OpenShift Service Mesh 1.0.

Known issues

The following limitations exist in OpenShift Serverless at this time:

  • The Knative Serving Operator should wait for ServiceMeshMemberRoll to include the knative-serving namespace. The installation procedure recommends creating the knative-serving namespace and then installing the operator. Istio does not consider the knative-serving namespace to be in the ServiceMeshMemberRoll when the Knative Serving Pods are being created. Consequently, the sidecars are not injected.

  • Knative service returns a 503 status code when the cluster is running for a long time. The Knative Serving Pods do not show any errors. Restarting the istio-pilot Pod temporarily fixes the issue.

  • The gRPC and HTTP2 do not work against routes. This is a known limitation of OpenShift routes.