Ambari metrics display issue

[#1]

I have a HDP 2.3 cluster with 9 nodes: 1 management node, 2 master nodes, and 6 slave nodes.

The Ambari dashboard shows the metrics (cpu usage, disk usage, etc.) from the management and master nodes. The metrics from the slave nodes are not displayed (metrics service may not be installed or inaccessible). I have checked and the metrics monitor service is installed, running, and sending messages to the collector. Ntp is also running.

So why am I not seeing those metrics?

[#2]

Yes! Thank you @Geoffrey Shelton Okot. That did it - I followed the instructions in the document to sync the ntp servers and I'm in business. Thanks!

[#3]

thanks @Rahul Tikeker your answer was very helpful