configmap.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  creationTimestamp: null
  name: test
spec:
  replicas: 1
  template:
    metadata:
      creationTimestamp: null
      labels:
        service: test
    spec:
      containers:
        image: test
        name: test
        ports:
        - containerPort: 80
        resources:
          limits:
            memory: 300Mi
          requests:
            memory: 100Mi
        volumeMounts:
        - name: "config"
          mountPath: "/<existing folder>/<file1>"
          subPath: "<file1>"
        - name: "config"
          mountPath: "/<existing folder>/<file2>"
          subPath: "<file2>"
      restartPolicy: Always
      volumes:
        - name: "config"
          configMap:
            name: "config"
      restartPolicy: Always
status: {}

@abdennour can you link to it?

No, it is not deprecated. Documents on VolumeMounts: https://kubernetes.io/docs/reference/kubernetes-api/workload-resources/pod-v1/#volumes-1

@abdennour kubernetes v1.24 subPath is still not deprecated...

Be aware that using subPath has the downside of not updating the file when ConfigMap changes.

Be aware that using subPath has the downside of not updating the file when ConfigMap changes.

Unless you restart the pod