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Created attachment 1702075 [details]
Misleading values in "PCP Vector Container Overview" dashboard

Description of problem:
When there is no container running on a host system, Grafana shows in the default "PCP Vector Container Overview" dashboard misleading values (see the screenshot in attachment).

Version-Release number of selected component (if applicable):
* grafana-6.7.4-1.el8
* grafana-pcp-2.0.2-1.el8
* pcp-5.1.1-3.el8

How reproducible:
always

Steps to Reproduce:
1. Install pcp, grafana, grafana-pcp components
2. Start pcp (pmcd, pmproxy) and grafana
2.1 Make sure there is no container running on the system
- "podman ps" Should return nothing
3. In grafana, enable the "Performance Co-Pilot" plugin
4. In grafana, configure the Vector datasource using default values
5. Check charts in "PCP Vector Container Overview" dashboard

Actual results:
* Charts in the "PCP Vector Container Overview" dashboard are showing a lots of misleading values even no container is running on the host system


Expected results:
The dashboard (or the charts) stays empty as there is nothing to show

Additional info:
In case there is at least one container running on the monitored system, the dashboard shows correct/expected values.

New grafana-pcp build with patch applied: https://brewweb.engineering.redhat.com/brew/buildinfo?buildID=1266400

@Jan, can you set the erratum back to NEW_FILES so I can add the new build and attach this BZ?


Cheers,
Andreas

(In reply to Andreas Gerstmayr from comment #1)
> @Jan, can you set the erratum back to NEW_FILES so I can add the new build
> and attach this BZ?

Done.

Thanks!

I've added the new build to the erratum & changed state to ON_QA again.

Verified manually - fixed in grafana-pcp-2.0.2-3.el8 build.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (grafana-pcp bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2020:4693