deploy/hdfs/templates/datanodes-netpol.yaml

# Copyright 2020 Crown Copyright
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#     http://www.apache.org/licenses/LICENSE-2.0
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{{- if .Values.networkPolicy.enabled }}
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ template "hdfs.fullname" . }}-datanodes
  labels:
    {{ include "hdfs.labels" . | nindent 4 }}
    app.kubernetes.io/component: datanode
spec:
  podSelector:
    matchLabels:
      {{- include "hdfs.selectorLabels" . | nindent 6 }}
      app.kubernetes.io/component: datanode
  policyTypes:
  - Ingress
  ingress:
  # Allow clients to access client RPC and HTTP servers
  - ports:
    - port: http
    - port: https
    - port: data-xfer
  # Allow NameNode and DataNodes to access IPC Server
  - from:
    - podSelector:
        matchLabels:
          {{- include "hdfs.selectorLabels" . | nindent 10 }}
    ports:
    - port: ipc
{{- end }}