mtail is an alternative to grok_exporter. There is also promtail, the frontend component of loki, which can expose prometheus metrics: https://github.com/grafana/loki/blob/master/docs/clients/promtail/stages/metrics.md
Outside of the prometheus ecosystem, there are applications which are designed for matching log patterns and alerting on specific conditions - typically known as "HIDS" (host-based intrusion detection systems) - e.g. ossec/wazuh. There are also tools which bolt onto the back of Elasticsearch - e.g. elastalert, or opendistro alerting. -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/a749697e-763b-4f6d-a1e0-c1c2bc6a10ba%40googlegroups.com.

