So, I've been using Thanos to receive and store my prometheus metrics long term in a self hosted S3 bucket. Thanos also acts as a datasource for my dashboards in Grafana, and provides a Ruler, which evaluates alerting rules against my metrics and forwards them to my alertmanager. It's ok. It's certainly got it's downsides, which I can go into later, but I've thinking... what about Mimir?

How do you all feel about Grafana's Mimir (source on GitHub)? It's AGPL and seems to literally be a replacement of Thanos, which is Apache 2.0.

Thanos description from their website:

Open source, highly available Prometheus setup with long term storage capabilities.

Mimir description from their website:

...open source software project that provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus and OpenTelemetry metrics.
Both with work with alloy and prometheus alike. Both require you to configure initially confusing hashrings and replication parameters. Both have a bunch of large companies adopting them, so... now I feel conflicted. Should I try mimir? Poll in reply.

#thanos #prometheus #alloy #grafana #observability #monitoring #kubernetes #k8s #foss #sre