I am trying to instal h20 on hortonworks sandbox 2.4 by following http://www.h2o.ai/download/h2o/hadoop. Everything runs well, I see the messages "Blocking until the H2O cluster shuts down..." and "open h2o web flow through 10.0.2.15:54321". But when I go to that page, it is not loaded giving ERR_CONNECTION_TIMED_OUT error. What should I do to connect h2o web page? Thanks.
This sounds like it could be an issue with using a private vs public IP. See if you can ping 10.0.2.5. If that is getting a timeout then the machine is not reachable. If you can indeed reach the machine then see if you can reach the service: wget http://10.0.2.15:54321