hadoop-ozone/dist/src/main/k8s/examples/ozone-dev/datanode-statefulset.yaml

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: datanode
  labels:
    app.kubernetes.io/component: ozone
spec:
  selector:
    matchLabels:
      app: ozone
      component: datanode
  serviceName: datanode
  replicas: 3
  template:
    metadata:
      labels:
        app: ozone
        component: datanode
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9882"
        prometheus.io/path: /prom
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: component
                operator: In
                values:
                - datanode
            topologyKey: kubernetes.io/hostname
      securityContext:
        fsGroup: 1000
      containers:
      - name: datanode
        image: '@docker.image@'
        args:
        - ozone
        - datanode
        envFrom:
        - configMapRef:
            name: config
        env:
        - name: JAEGER_SAMPLER_TYPE
          value: probabilistic
        - name: JAEGER_SAMPLER_PARAM
          value: "0.01"
        - name: JAEGER_AGENT_HOST
          value: jaeger-0.jaeger
        volumeMounts:
        - name: data
          mountPath: /data
      volumes:
      - name: data
        emptyDir: {}