Hadoop UI shows only one Datanode

Question

I\'ve started hadoop cluster composed of on master and 4 slave nodes.

Configuration seems ok:

hduser@ubuntu-amd64:/usr/local/hadoop$ ./bin/hdfs dfsadmin -rep

Answer 1

Your admin report looks absolutely fine. Please run the below to check the HDFS disk space details.

"hdfs dfs -df /"

If you still see the size being good, its just a UI glitch.