Connecting Datastax outside Kubernetes to a Cassandra cluster in Kubernetes
First of all. You can't use LoadBalancer for this purpose.
Set up the service like so:
apiVersion: v1kind: Servicemetadata: labels: app: cassandra name: cassandraspec: type: NodePort ports: - port: 9042 nodePort: 30042 selector: app: cassandraThe nodePort will be available outside the Kubernetes cluster. The nodePort has to be between 30000-32767.
From datastax driver, connect to K8S_NODE_IP:NODEPORT (not the pod ip).
One option is to use an address translator at the driver:
https://docs.datastax.com/en/developer/java-driver/3.5/manual/address_resolution/
However note that you will loose driver side features like token aware load balancing etc.
The best approach is to provide direct connectivity from your app to all the C* nodes so it can establish connections to each node.
You can create a Kubernetes service to expose the pods in your Deployment or StatefulSet. The service could be either a NodePort or LoadBalancer port so that you have external access.
You will also have to add a Selector on both your service and your Deployment/StatefulSet so that your service can attach the right Endpoints