Hi, all, I'm having problem to access the web UI of my Spark cluster. The cluster is composed of a few virtual machines running on a OpenStack platform. The VMs are launched from CentOS7.0 server image available from official site. The Spark itself runs well and master and worker process are all up and running, and run SparkPi example also get expected result. So, the question is, how to debug such a problem? Should it be a native problem of the CentOS image as it is not a desktop version, so some graphic packages might be missing in the VM? Or it is a iptables settings problem comes from OpenStack, as Openstack configures complex network inside it and it might block certain communication? Does anybody find similar problems? Any hints will be appreciated. Thanks!
Cheers, Dong
