The way this comment is written doesn’t sound anything like the OP or the GitHub issue. Different tone, different dialect/spelling… lot of linguistic red flags. Not that I’m judging either way, it’s just suspicious how vastly different they are.

In years past, I’ve used Elasticsearch and Kibana. The learning curve is steep and the system resource requirements warrant a dedicated machine, but once you get it dialed, it’s really effective as a centralized logging server.

Prometheus and Grafana are for time-series data (metrics), not logs. If you’re already getting that from netdata, don’t bother with these, as they’d be redundant with what you have.

syslog is about as idiomatic as it gets for log management in linux, but i don’t have enough experience using it effectively to give any pointers there. If you don’t really know what you want, yet, and just want to collect logs from all the things and see them in one place so you can begin to try and make sense of them and make refinements from there, then syslog seems like an excellent place to start.

If you’re using Gmail, and you’re considering alternatives for privacy reasons, then 100% without a doubt, objectively and unequivocably, Proton is the better choice of the two.

There are other email providers with privacy assurances, and yes, you can self-host, but don’t let perfection be the enemy of the good.

To address the trustworthiness of Proton directly: I’ve been a Proton user for about 10 years. It gets the job done. I have complaints, but privacy is not among them.