Added base Grafana dashboard and Alert rules

[jpkrohling]

Signed-off-by: Juraci Paixão Kröhling [email protected]

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[pavolloffay]

I have two comments:

• Is there a way to verify that these files work with grafana? An automated test would be useful.
• Do these definitions work for other systems than grafana? If no I would consider renaming subdirectory jaeger-mixins to grafana. It should help with search but also it tells folks not familiar with grafana that we provide something. monitoring/jaeger-mixin/dashboards-jaeger.json

[jpkrohling]

Is there a way to verify that these files work with grafana? An automated test would be useful.

Not easily: a test would require a client sending spans to Jaeger, which exposes metrics that are scraped by Prometheus and displayed by Grafana.

Do these definitions work for other systems than grafana?

I'm not sure, but I agree that the dashboard file name could be changed to mention Grafana in the name. I'll also update the readme file.