server: health endpoint configurable failure on no slot #5594
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Motivation
Since PR #5548,
/health
answers503
if all slots are processing requests. This behavior may not always be expected for liveness checks.One can expect a liveness or a readyness probe behavior as identified by @brittlewis12.
Changes
A new query parameter
fail_on_no_slot
allows to configure the expected behavior regarding the http status code.