Add a primary (write) Service routing to pod-0 #7

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benvin merged 1 commits from benvin/primary-write-service into main 2026-07-04 22:37:40 +10:00

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Author SHA1 Message Date
unkinben 28ae6538cb Add a primary (write) Service routing to pod-0
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Secondaries reject RFC2136/nsupdate writes, but the read Service round-
robins across all pods. Add an optional per-cluster write endpoint that
targets only the primary pod (ordinal 0) via the StatefulSet pod-name
label. Reads keep using the all-pods Service.

- api: BindCluster.spec.primaryService (*ClusterServiceSpec) — ClusterIP
  for in-cluster writers (external-dns) or LoadBalancer for external
- reconcilePrimaryService creates <cluster>-primary selecting pod-0 when
  set, deletes it when unset
- regenerate CRDs + install.yaml
2026-07-04 22:29:55 +10:00