refactor: shared Neon (drop ACK-RDS); tb-prod tailnet+branch validation overlay#5
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…on overlay Customer Auth uses a SHARED Neon Postgres DB (source ECS and EKS target), not RDS, so the ACK-RDS machinery was vestigial and the tb-prod overlay's public/RDS shape did not match the running tailnet+branch validation instance. Base: - Remove bases/aws/* (DBInstance/DBSubnetGroup/FieldExport) and the rds-endpoint ConfigMap; the StatefulSet now takes KC_DB_URL_HOST from the overlay (sentinel value) instead of a FieldExport ConfigMap; port defaults to 5432. Overlays: - tb-dev: drop the now-dangling aws/* patches (DB host already overridden to the Neon branch in #4); render is otherwise unchanged. - tb-prod: reshape to the running VALIDATION state -- tailnet-only hostname (keycloak-customer-tb-prod), Neon branch mzla-tb-prod (ep-red-grass, sslmode), 2 replicas / 500m, dedicated SecurityGroupPolicy [eks-cluster-sg, pod SG], and a tailnet Ingress. The public-cutover files (cloudflare-*, tailscale-admin-ingress, pdb minAvailable-2, 3 replicas) are kept but unreferenced until the cutover (#142). Docs: README + base StatefulSet header updated to the shared-Neon reality. Implements #579; part of #139. NOTE: merge only AFTER platform-infrastructure prune:false lands so the tb-dev sync does not auto-delete the idle dev RDS. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Customer Auth uses a shared Neon Postgres DB (source ECS and EKS target), not RDS — so the ACK-RDS machinery was vestigial, and the
overlays/tb-prodpublic/RDS shape did not match the running tailnet + Neon-branch validation instance.Base
bases/aws/*(DBInstance/DBSubnetGroup/FieldExport) + therds-endpointConfigMap. The StatefulSet now takesKC_DB_URL_HOSTfrom the overlay (sentinelvalue:) instead of a FieldExport ConfigMap; port defaults to5432.Overlays
aws/*patches (DB host was already overridden to the Neon branch in feat(tb-dev): repoint Keycloak DB to the Neon branch mzla-tb-dev #4). Rendered output is otherwise unchanged.keycloak-customer-tb-prod), Neon branchmzla-tb-prod(ep-red-grass,?sslmode=require), 2 replicas / 500m, dedicatedSecurityGroupPolicy[sg-08711… eks-cluster-sg, sg-08319… pod SG], tailnetIngress. The public-cutover files (cloudflare-*,tailscale-admin-ingress,pdbminAvailable-2, 3 replicas) are kept but unreferenced until the cutover (#142).Docs: README + base StatefulSet header updated to the shared-Neon reality.
Validated locally:
kubectl kustomize overlays/{tb-dev,tb-prod}→ 11 objects each, no DBInstance/FieldExport/ConfigMap/Tunnel; tb-prod renders the branch DB host + correct SGs + ExternalSecrets →mzla/tb-prod/*.Implements platform-infrastructure#579; part of platform-infrastructure#139.
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