postgres.yml

---
kind: Service
apiVersion: v1
metadata:
  name: imagetagger-postgres
  labels:
    tier: database
spec:
  selector:
    tier: database
  ports:
    - name: postgres
      port: 5432
      targetPort: postgres

---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: imagetagger-postgres
  labels:
    tier: database
spec:
  selector:
    matchLabels:
      tier: database
  template:
    metadata:
      labels:
        tier: database
    spec:
      automountServiceAccountToken: false
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: imagetagger-database
      containers:
        - name: main
          image: docker.io/postgres:12
          imagePullPolicy: Always
          envFrom:
            - configMapRef:
                name: imagetagger-postgres
          env:
            # postgres recommends putting the actual data in a sub-folder if it is mounted from external sources
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
          ports:
            - name: postgres
              containerPort: 5432
          livenessProbe:
            tcpSocket:
              port: postgres

---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: imagetagger-database
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi       # should be enough even for large instances
  selector:
    matchLabels:
      tier: database