Kubectl top nodes does not show metrics of primary Master node – SMAX User Discussions

for your question “ I also see the difference in IP and hostname, apart from the primary master node, all the nodes show IP address but for primary master it displays “Hostname”. ” 

this command will get you the ip address and hostname “kubectl get node -o wide” 

primary master has hostname because it’s configured when you add the master, if you want add the node with hostname you provide the name when you run “cdfctl node add ” script other wise you just provide the IP

to fix this (you don’t have to do so) you’ll have to rename the primary master node from hostname to IP