Your datanode server is most likely listening on https only, not plaintext http. That’s why you don’t get any response on 9200 port.
You will also need client certificates to access it: Graylog Datanode: admin access using client certification
Your datanode server is most likely listening on https only, not plaintext http. That’s why you don’t get any response on 9200 port.
You will also need client certificates to access it: Graylog Datanode: admin access using client certification