Hadoop HDFS - Cannot connect to port on master

Question

I\'ve set up a small Hadoop cluster for testing. Setup went fairly well with the NameNode (1 machine), SecondaryNameNode (1) and all DataNodes (3). The machines are named \"

Answer 1

Correct your /etc/hosts file to include localhost or correct your core-site file to specify ip or hostname of node that hosts HDFS filesystem.

Answer 2

Replace localhost in hdfs://localhost:9000 with ip-address or hostname for the fs.default.name property in NameNode when there are remote nodes connecting to the NameNode.

All processes on all nodes were checked to be up and running with jps

There might be some errors in the log files. jps makes sure that the process is running.