Grafana's new Loki [1] looks very promising. It bills itself as "Prometheus for logging". It doesn't index the text of messages, but it does allow fast filterin

Grafana's new Loki [1] looks very promising. It bills itself as "Prometheus for logging". It doesn't index the text of messages, but it does allow fast filtering predicates on labels and time. [1] https://grafana.com/loki https://grafana.com/loki