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Once you have deployed your device and processed at least one message, your metric will be published on the Connexion http metric endpoint. At this point you can open Grafana in a browser and start creating a dashboard.
Custom Metrics in the UI
In order for custom metrics to appear in the Connexion UI metric tab, they must be created/accessed once. The process of calling the GetOrCreateX method will register a metric within Connexion. Currently, the Connexion UI must be restarted (or navigate away and back to the metric tab), for newly registered metrics to be displayed.