Prometheus (https://prometheus.io/) is increasing in popularity as one of the reference tools for metric collection and aggregation for cloud native applications.
I would also be much interested in this. The project was created by google and it took off really fast. Together with grafana they're a very nice fit, but there's still so much to learn. A course on this would be extremely useful for any linux sysadmin.
Delivered as part of this course! Lot of learning activities on it as well!
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