daemon-set.yaml

# Copyright 2019 Google LLC
#
# Licensed 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: DaemonSet
metadata:
  name: node-initializer
  labels:
    app: default-init
spec:
  selector:
    matchLabels:
      app: default-init
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        name: node-initializer
        app: default-init
    spec:
      volumes:
        - name: root-mount
          hostPath:
            path: /
        - name: entrypoint
          configMap:
            name: entrypoint
            defaultMode: 0744
      initContainers:
        - image: ubuntu:18.04
          name: node-initializer
          command: ["/scripts/entrypoint.sh"]
          env:
            - name: ROOT_MOUNT_DIR
              value: /root
          securityContext:
            privileged: true
          volumeMounts:
            - name: root-mount
              mountPath: /root
            - name: entrypoint
              mountPath: /scripts
      containers:
        - image: "gcr.io/google-containers/pause:2.0"
          name: pause
...