I've been using metricbeat to monitor machine standard values successfully, like cpu memory and io. I can plot the values on the Kibana dashboards.
Now I also want to send application custom data. I can extract that data from the application, but I don't know how I can send it to Elastic, so that I can get it on the dashboards.
Custom module with Metric Beat? Custom beat? New Elastic Package? Other?
In my mind I imagine that if I had a file that had the structured data there would be a module from metricbeat that would read that file and send the data to Elastic. But maybe I am too optimistic.