@Mukesh Burman Login to Ambari - Click Services-> HDFS serivce->Summary->Click on Namenode <- a new page will open which will display hostname on top on which namenode is running. Same for ZKFC 2. ps -aef |grep nameode <-capture the pid from here [for eg say it is 3490 then do netstat for that pid to get the port - netstat taupen |grep <pid/3490> The 4th column in netstat o/p shows ipaddress:port no. Difficult for namenode port even if service crash. You should check namenode conf file for port on which namenode service will always start - /etc/hadoop/confhdfs-site.xml [port 8020,50070]
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