

I use Promtail + Loki + Grafana to monitor application logs. Promtail scrapes logs, Loki stores and indexes them and Grafana can query Loki with LogQL and also send alerts.
Apparently Promtail is superseded by Grafana Alloy, which I don’t have experience with.
Anyway, I set this up mostly for fun and to preserve logs of terminated pods in my kubernetes cluster. I don’t have any alerts in place, but I probably could.
chef’s kiss