{#
Copyright 2019 Nokia

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: flannel-ds
  namespace: kube-system
  labels:
    tier: node
    {{ caas.kubernetes_component_label }}: flannel
spec:
  selector:
    matchLabels:
      {{ caas.kubernetes_component_label }}: flannel
  template:
    metadata:
      labels:
        tier: node
        {{ caas.kubernetes_component_label }}: flannel
    spec:
      priorityClassName: "system-node-critical"
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
     # TODO: figure out why privileged mode is also not enough for flannel to modify network settings on the host (same problem as watcher)
     #securityContext:
     #     runAsUser: {{ caas.uid.flannel }}
      tolerations:
      - key: node.kubernetes.io/master
        operator: Exists
        effect: NoSchedule
      containers:
      - name: kube-flannel
        image: {{ container_image_names | select('search', '/flannel') | list | last }}
        command:
        - /opt/bin/flanneld
        args:
        - --ip-masq
        - --kube-subnet-mgr
        - --iface={{ networking.infra_internal.interface }}
        securityContext:
          privileged: true
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        resources:
          requests:
            cpu: "10m"
        volumeMounts:
        - name: time-mount
          mountPath: /etc/localtime
          readOnly: true
        - name: run
          mountPath: /run
        - name: flannel-cfg
          mountPath: /etc/kube-flannel/
      volumes:
        - name: time-mount
          hostPath:
             path: /etc/localtime
        - name: run
          hostPath:
            path: /run
        - name: flannel-cfg
          configMap:
            name: flannel-cm
      serviceAccountName: flannel