Aravindan Vijayan commented on AMBARI-18289:

[~Ponder-Hoover] psutil has a compile time dependency on gcc and python-devel 
packages. Can you check if those are installed?

> Invalid negative values for some AMS metrics
> --------------------------------------------
>                 Key: AMBARI-18289
>                 URL: https://issues.apache.org/jira/browse/AMBARI-18289
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-metrics
>    Affects Versions: 2.4.0
>            Reporter: Aravindan Vijayan
>            Assignee: Aravindan Vijayan
>            Priority: Critical
>             Fix For: 2.5.0
>         Attachments: AMBARI-18289-2.patch
> Negative values are being reported for IOPS in the "system servers" dashboard
> This was a dockerized environment. Negative rate values were seen because 
> read/write counters were dropping below the previous values at random times. 
> On further investigation, it revealed that this was due to the docker volume 
> groups present on the host. It is expected of docker containers to add/remove 
> the volume groups during the lifecyle of a container. So, when a volume group 
> goes away, the read/write counters do not contribute to the total counter 
> values, thus making the value go below the last seen value.
> Have a provision to discard such "special" disk partitions through a skip 
> pattern. Individual disk counter metrics can be used to get disk specific 
> counter values. If skipped, they will not contribute to the global counter 
> metric.

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