Using the REST API, what is the output of this call (to your ambari server)? http://your.ambari.server:8080/api/v1/hosts Anything special about your network configuration? Public and private networks? ...
HDP on Linux – Installation Forum
Hosts "Name" column is blank
I have a provisioned a small 4-node Hadoop cluster with ambari, and all went fairly smooth and I can manage and view information about the cluster through the console, there is one small glitch however: None of the server hostnames show up in the console view (under Hosts). I do see 4 records, and IP address is listed and also I see the green status circle, but for some reason the hostname is not there. What method is ambari using to resolve IP to hostname? I have /etc/hosts entries across the board.
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