PHP-FPM max-children reached warning
PHP-FPM reached max children - {{ $labels.instance }}
>>>
sum
(
) by (instance) > 0
The query aggregates phpfpm_max_children_reached_total per instance and fires when the sum is greater than 0, meaning at least one PHP‑FPM process on that instance has hit its configured max‑children limit. The alert triggers as soon as any such occurrence is recorded for an instance.
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