Question/Feature-Request: what is the correct method to get Indices health status (color)?

[MSandro]

Summary

I’d like to alert in Prometheus when any index changes health from green → yellow/red.
The exporter provides cluster-level health (elasticsearch_cluster_health_status{color=...}), but I couldn’t find a per-index equivalent.

Question: Is there a way to get per-index health status from the exporter today?
If not, I’d like to propose adding a metric for this.

[timchenko-a]

Green/yellow/red is a cluster-level health status, not index-level. So it's not about exporter, it's about Elasticsearch.
If you want some meaningful alert you can setup alert based on something like elasticsearch_cluster_health_unassigned_shards.