MultiClusterInconsistentService

Message NameMultiClusterInconsistentService
Message CodeIST0170
DescriptionThe services live in different clusters under multi-cluster deployment model are inconsistent
LevelWarning

This message occurs when a Service with the same name and namespace is different in two or more clusters of a multicluster mesh.

Istio merges services with the same name and namespace from all clusters into one service. If the definitions are different, the behavior is not defined. The analyzer compares these items:

  • The service type.
  • The ports.
  • If the service is headless (clusterIP: None) or not.

An example

You will receive a message like this:

Warning [IST0170] (Service sample/helloworld) The service helloworld in namespace "sample" is inconsistent across clusters ["cluster1" "cluster2"], which can lead to undefined behaviors. The inconsistent behaviors are: service ports are inconsistent.

How to resolve

Make the Service definitions the same in all clusters.