Hello @red888, Thanks for reaching Cloudera Community, glad to have you here. NiFi does not support HTTPS and HTTP mixed, you will need to have only one. Is recommended HTTPS, HTTP is supported but in the newer versions due to all the security, login auth and more, is not the best idea as you will face issues like you have seen. NiFi will use the same HTTPS listner to communicate, this is used for the UI, REST API and node protocol traffic. All of these are HTTPS requests. About the names, you do not need to add public DNS names. The certs only need to have the SANs matching what the nodes uses to talk each other. In K8s is usually the pods DNS or service DNS. There is no much NiFi docs for K8s, but some are these: https://nifi.apache.org/nifi-docs/administration-guide.html#kubernetes-clustering https://nifi.apache.org/nifi-docs/administration-guide.html#kubernetes-configmap-cluster-state-provider https://nifi.apache.org/nifi-docs/administration-guide.html#kubernetes-nginx-ingress-controller https://nifi.apache.org/nifi-docs/administration-guide.html#cluster_node_properties
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