Does Istio support hazelcast-kubernetes?
Istio works by limiting the network connectivity using firewall rules to force traffic through the mesh network.This is (currently) based on kubernetes services not concrete pods.
Hazelcast should not work with istio yet, according to:https://groups.google.com/forum/#!topic/istio-users/d-THsO19oAM
Although I assume that this will be tackled in some way in the future, because many cluster-enabled projects like databases use some kind of direct communication to sync their events/data.
If you are running hazelcast as dedicated services and not embedded, you might want to try to run these without istio sidecars, so they use the regular kubernetes networking and connect from your istio-enhanced services to that. That should be possible.
UPDATE
It should work now: https://github.com/hazelcast/hazelcast-kubernetes/issues/118