apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: keycloak-postgresql
  namespace: keycloak
  labels:
    app.kubernetes.io/name: postgresql
    app.kubernetes.io/component: database
    app.kubernetes.io/part-of: keycloak
spec:
  serviceName: keycloak-postgresql
  replicas: 1
  selector:
    matchLabels:
      app: keycloak-postgresql
  template:
    metadata:
      labels:
        app: keycloak-postgresql
        app.kubernetes.io/name: postgresql
        app.kubernetes.io/component: database
        app.kubernetes.io/part-of: keycloak
    spec:
      containers:
        - name: postgresql
          image: postgres:16-alpine
          ports:
            - containerPort: 5432
              name: postgresql
          env:
            - name: POSTGRES_DB
              valueFrom:
                secretKeyRef:
                  name: keycloak-secrets
                  key: POSTGRES_DB
            - name: POSTGRES_USER
              valueFrom:
                secretKeyRef:
                  name: keycloak-secrets
                  key: POSTGRES_USER
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: keycloak-secrets
                  key: POSTGRES_PASSWORD
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          resources:
            requests:
              cpu: 100m
              memory: 256Mi
            limits:
              cpu: 500m
              memory: 512Mi
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: postgresql-data