feat: Introduce object limits #2626
Open
+111
−55
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What this PR does / why we need it:
This change allows user-controlled limits on how many objects KSM will list from the API. This is helpful to prevent resource exhaustion on KSM, in case the API creates too many resources.
The object limit it set globally and applied per resource watched.
This is currently a WIP as I'm not sure if it will work as expected and it needs further testing.
How does this change affect the cardinality of KSM: (increases, decreases or does not change cardinality)
Introduces a new metric on ksm telemetry, which is static over KSM config lifetime:
kube_state_metrics_list_limit
This will help with alerting when a threshold is reached.
Which issue(s) this PR fixes (optional, in
fixes #<issue number>(, fixes #<issue_number>, ...)
format, will close the issue(s) when PR gets merged):Fixes #2622