No data on several panels

[MrObvious]

Describe the bug
No data on multiple panels

Environment
NAbox 3.0_beta7 (2021-10-02) - Alpine Linux 3.14.2
Grafana8.1.5
Graphite1.2.0
NetApp Harvest21.08.0-6
NetApp NMSDK 9.8P2

To Reproduce
Go to SVM details dashboard and get no data such as under Highlights

Expected behavior
Tell us what should happen

Actual behavior
Tell us what happens instead

Possible solution, workaround, fix
No

Additional context
Internal system, if you want I can give access as it is on corporate network.

-Paul Stejskal

[rahulguptajss]

@MrObvious Yes send us an email with system details and we'll check.

[MrObvious]

Rahul,

What e-mail is best? ng-harvest-maintainers?

Feel free to hit me up on Teams as well.

[cgrinds]

@MrObvious's Grafana was setup with a default Graphite datasource

and the SVM details dashboard panels do not define a datasource

"datasource": null,

which means the default (Graphite) will be used. I changed all these to

"datasource": "${DS_PROMETHEUS}",

and boom, beautiful SVM stats.

[cgrinds]

Fixed by #640