Node Summary: Inconsistent metrics from dbaas clusters

User impact:

Inconsistent metrics from dbaas clusters

Steps to reproduce:

A)
Create a mongodb cluster in dbaas
Go to MongoDB Instance Summary dashboard
Select any of the "...-cfg-x" services
Check RAM and Virtual Memory in Node Summary

B)
Check Disk Space in Node Summary

Actual result:

A)

B)

First problem is that Disk Space is the same value on MySQL/MongoDB Summary dashboard as it is on Node Summary dashboard

Second problem is that 79.99GiB doesn't seem correct. Total disk size of whole node should be 1.28 PB (on Node Summary dashboard) and 5GB on MongoDB dashboard

Expected result:

A) Correct RAM values

B) Node Summary on MySQL/MongoDB Summary dashboards should not show disk size of whole node but reflect whatever resources user set while creating a cluster in dbaas

Workaround:

Details: