3 people 3db6a99d3a feat(analyze): add countDistinct() aggregate to nodeResources (#2079) ...

Add a countDistinct(<labelKey>) aggregate to the nodeResources analyzer
"when" expression language. It counts distinct values of a node label
across the filtered nodes and returns an int the existing comparison
operators evaluate.

Enables the AIR-238 3-AZ preflight: warn when Keeper-eligible nodes do
not span 3 availability zones, e.g.
"countDistinct(topology.kubernetes.io/zone) < 3".

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: Xav Paice <xavpaice@users.noreply.github.com>

2026-08-10 12:54:33 +12:00

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