1. I can't open Hive WebUI. It can't connect to the Hive website. It shows "ERR_CONNECTION_REFUSED". 2. No, it always can't connect to the website. 3. There is no other message about it.  4. I have used command line, "hadoop version". There is no information about CDH version. All codes are below. https://github.com/KarenPHS/HadoopCluster ... View more