I have used Istio deployment tool to install Istio in Google Kubernetes Engine, once after I have deployed my application I am not able to access Cassandra cluster but from outside I am able to access cluster ,I have verified firewall as well. if I deploy my application with out istio then application can able to access cassandra. I have used default setting while deploying ISTIO. my cassandra running port 9042. help me to resolve the issue.
See https://istio.io/blog/2018/egress-tcp/ on how to configure access from Istio to external TCP services.
I have disabled Istio injection then it worked fine. command used to disable
kubectl label namespace default istio-injection=false