Thanos Query Is Down critical
ThanosQuery has disappeared. Prometheus target for the component cannot be discovered.
>>>
absent
(
{job=~".*thanos-query.*"} == 1)
The rule uses absent(up{job=~".*thanos-query.*"} == 1) which returns a non‑empty result whenever there is no up metric with value 1 for any job whose name matches .*thanos-query.*. When that happens—meaning no Thanos Query instance is reporting as up—the alert fires.
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