vm_free_disk_space_bytes / ignoring(path)
(
   (
    rate(vm_rows_added_to_storage_total[1d]) -
    ignoring(type) rate(vm_deduplicated_samples_total{type="merge"}[1d])
   )
  * scalar(
    sum(vm_data_size_bytes{type!="indexdb"}) /
    sum(vm_rows{type!="indexdb"})
   )
) < 3 * 24 * 3600 > 0

1800 seconds

severity=critical

dashboard:

http://localhost:3000/d/wNf0q_kZk?viewPanel=73&var-instance={{ $labels.instance }}

description:

Taking into account current ingestion rate, free disk space will be enough only for {{ $value | humanizeDuration }} on instance {{ $labels.instance }}. Consider to limit the ingestion rate, decrease retention or scale the disk space if possible.

summary:

Instance {{ $labels.instance }} will run out of disk space soon

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