I am new in that area and have some problems with my hadoop cluster. I am installed CDH with Cloudera Manager on the cluster with 7 servers. Inspection of all hasts was successful.
Image of successful inspection
In the installation process, there were some errors, but after the restarting of the cluster they disappeared and I've fixed the other health issues. Now the status of my cluster looks like next image:
Status of my hadoop cluster
But i still can't watch the Cluster disk IO statistic because is NO DATA. How can i solve this problem?