Deploy Poimen Memory K8s cluster with ArgoCD tracking (M2.2, M3.5-M3.7)

k8s/argocd/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+# Poimen Memory ArgoCD applications (tracked by poimen-orchestrator)
+# Each app syncs from this repo's main branch
+resources:
+  - memory-database-app.yaml

k8s/argocd/memory-database-app.yaml

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+# Poimen Memory Database — CNPG Postgres cluster with pgvector
+# Synced by poimen-orchestrator (or standalone if deployed directly)
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: poimen-memory-database
+  namespace: argocd
+  labels:
+    app.kubernetes.io/name: poimen-memory
+    app.kubernetes.io/component: database
+  annotations:
+    argocd.argoproj.io/sync-wave: "2"  # Wave 2: databases (after bootstrap, before apps)
+spec:
+  project: homelab
+  source:
+    repoURL: https://github.com/Riotpiaole/Poimen-memory.git
+    targetRevision: main
+    path: k8s/infra/databases
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: default
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+      - ServerSideApply=true
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m

k8s/infra/databases/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+# Poimen Memory CNPG Postgres cluster with pgvector extension.
+# Namespace declared inline in memory-db.yaml (no top-level namespace:).
+resources:
+  - memory-db.yaml

k8s/infra/databases/memory-db.yaml

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+# Dedicated CNPG Postgres for Poimen Memory (GitOps, wave 2 — before poimen w3).
+# Includes pgvector extension for semantic search (768-dim embeddings).
+# CNPG generates secret `memory-db-app` + service `memory-db-rw` in ns poimen;
+# poimen reads them locally (no cross-ns secret copy).
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: memory-db
+  namespace: poimen
+  annotations:
+    argocd.argoproj.io/sync-options: SkipDryRunOnMissingResource=true
+spec:
+  instances: 3
+  imageName: ghcr.io/cloudnative-pg/postgresql:16.2
+  bootstrap:
+    initdb:
+      database: memory
+      owner: app
+      encoding: UTF8
+      localeCollate: C
+      localeCType: C
+      postInitApplicationSQL:
+        - "CREATE EXTENSION vector;"
+  enableSuperuserAccess: false
+  resources:
+    requests: { memory: "512Mi", cpu: "250m" }
+    limits: { memory: "2Gi", cpu: "1" }
+  storage:
+    size: 10Gi
+    storageClass: longhorn-cnpg
+  monitoring:
+    enablePodMonitor: true
+  affinity:
+    # preferred + tolerations: HA across nodes without deadlocking a partly-
+    # schedulable 3-CP (same as temporal/authentik-db).
+    podAntiAffinityType: preferred
+    topologyKey: kubernetes.io/hostname
+    tolerations:
+      - key: node-role.kubernetes.io/control-plane
+        operator: Exists
+        effect: NoSchedule