apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{ .Release.Name }}-db
spec:
  serviceName: {{ .Release.Name }}-db
  replicas: 1
  selector:
    matchLabels:
      app: {{ .Release.Name }}-db
  template:
    metadata:
      labels:
        app: {{ .Release.Name }}-db
    spec:
      containers:
        - name: postgres
          image: postgres:15-alpine
          env:
            - name: POSTGRES_DB
              value: {{ .Values.postgres.database | quote }}
            - name: POSTGRES_USER
              value: {{ .Values.postgres.user | quote }}
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ .Release.Name }}-secrets
                  key: postgres-password
            {{- if .Values.postgres.pgdataSubdir }}
            # Longhorn-Volumes haben ein lost+found im Root -> initdb braucht ein Unterverzeichnis
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
            {{- end }}
          ports:
            - containerPort: 5432
              name: dbport
          volumeMounts:
            - name: db-data
              mountPath: /var/lib/postgresql/data
  volumeClaimTemplates:
    - metadata:
        name: db-data
      spec:
        accessModes: [ "ReadWriteOnce" ]
        {{- with .Values.postgres.storageClassName }}
        storageClassName: {{ . | quote }}
        {{- end }}
        resources:
          requests:
            storage: {{ .Values.postgres.storageSize }}