apiVersion: apps/v1
kind: Deployment
metadata:
  name: codimd-db
spec:
  replicas: 1
  strategy:
    type: Recreate # 確保 RWO 磁碟順利切換節點
  selector:
    matchLabels:
      app: codimd-db
  template:
    metadata:
      labels:
        app: codimd-db
    spec:
      containers:
        - name: postgres
          image: postgres:17-alpine
          resources:
            requests:
              memory: "128Mi"
              cpu: "100m"
            limits:
              memory: "512Mi"
              cpu: "500m"
          env:
            - name: POSTGRES_USER
              value: "codimd"
            - name: POSTGRES_DB
              value: "codimd"
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: codimd-secrets
                  key: POSTGRES_PASSWORD
            - name: PGDATA
              value: "/var/lib/postgresql/data/pgdata"
          # Health check
          livenessProbe:
            exec:
              command:
                - sh
                - -c
                - pg_isready -d "$POSTGRES_DB" -U "$POSTGRES_USER"
            initialDelaySeconds: 30
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 3
          readinessProbe:
            exec:
              command:
                - sh
                - -c
                - pg_isready -d "$POSTGRES_DB" -U "$POSTGRES_USER"
            initialDelaySeconds: 5
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 3
          volumeMounts:
            - mountPath: "/var/lib/postgresql/data"
              name: db-data
      volumes:
        - name: db-data
          persistentVolumeClaim:
            claimName: codimd-db-pvc
