Knative-serving activator operator fails with "failed calling webhook" in OCP 4

Solution Verified - Updated -


  • Getting error when trying to deploy the Knative Serving (serverless) through the OpenShift Serverless Operator documentation in an environment with istio Service Mesh already installed
  • The knative-serving-ingress and istio-system pods are all in a READY state
  • The Serverless Operator appears to have deployed all components, but all the replication controllers are hanging up trying to communicate with the istio services
  • The replicaset activator is having an issue with a certificate authority


  • Red Hat OpenShift Container Platform (OCP) 4
  • Red Hat OpenShift Serverless Operator 1.1.0
  • Red Hat OpenShift Service Mesh 1.1.2

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