apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: dawarich-db
  namespace: dawarich
  labels:
    app: dawarich-db
spec:
  serviceName: dawarich-db
  replicas: 1
  selector:
    matchLabels:
      app: dawarich-db
  template:
    metadata:
      labels:
        app: dawarich-db
    spec:
      securityContext:
        runAsUser: 999
        runAsGroup: 999
        fsGroup: 999
      containers:
        - name: postgres
          # Dawarich requires PostGIS; the Debian variant keeps the postgres user at UID 999
          # (the alpine variant upstream uses has 70). The image creates the postgis extension in POSTGRES_DB.
          image: postgis/postgis:17-3.5
          imagePullPolicy: IfNotPresent
          env:
            - name: POSTGRES_USER
              valueFrom:
                secretKeyRef:
                  name: dawarich-credentials
                  key: username
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: dawarich-credentials
                  key: password
            - name: POSTGRES_DB
              value: dawarich
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          ports:
            - containerPort: 5432
          startupProbe:
            tcpSocket:
              port: 5432
            initialDelaySeconds: 10
            periodSeconds: 10
            failureThreshold: 30
          livenessProbe:
            tcpSocket:
              port: 5432
            periodSeconds: 30
            failureThreshold: 5
          readinessProbe:
            tcpSocket:
              port: 5432
            periodSeconds: 10
            failureThreshold: 3
          resources:
            requests:
              cpu: 50m
              memory: 256Mi
            limits:
              memory: 2Gi    # includes the 1Gi /dev/shm below
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
            - name: shm
              mountPath: /dev/shm
      volumes:
        # Upstream compose sets shm_size: 1G — parallel queries over the points table
        # exceed the 64M container default.
        - name: shm
          emptyDir:
            medium: Memory
            sizeLimit: 1Gi
  volumeClaimTemplates:
    - metadata:
        name: data
      spec:
        accessModes: ["ReadWriteOnce"]
        storageClassName: nfs-synology-ssd
        resources:
          requests:
            storage: 10Gi