---
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
  name: canal-node
  labels:
    k8s-app: canal-node
spec:
  selector:
    matchLabels:
      k8s-app: canal-node
  template:
    metadata:
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
        scheduler.alpha.kubernetes.io/tolerations: '[{"key":"CriticalAddonsOnly", "operator":"Exists"}]'
      labels:
        k8s-app: canal-node
    spec:
      hostNetwork: true
      volumes:
        # Used by flannel-server-helper
        - name: "networkconfig"
          hostPath:
            path: "/etc/flannel-network.json"
        # Used by calico/node.
        - name: lib-modules
          hostPath:
            path: /lib/modules
        - name: var-run-calico
          hostPath:
            path: /var/run/calico
        # Used to install CNI.
        - name: cni-bin-dir
          hostPath:
            path: /opt/cni/bin
        - name: cni-net-dir
          hostPath:
            path: /etc/cni/net.d
        # Used by flannel daemon.
        - name: run-flannel
          hostPath:
            path: /run/flannel
        - name: resolv
          hostPath:
            path: /etc/resolv.conf
      containers:
        - name: "flannel-server-helper"
          image: "{{ flannel_server_helper_image_repo }}:{{ flannel_server_helper_image_tag }}"
          env:
            # Cluster name
            - name: CLUSTER_NAME
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: cluster_name
            # The location of the etcd cluster.
            - name: FLANNELD_ETCD_ENDPOINTS
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_endpoints
          args:
            - "--network-config=/etc/flannel-network.json"
            - "--etcd-prefix=/$(CLUSTER_NAME)/network"
            - "--etcd-server=$(FLANNELD_ETCD_ENDPOINTS)"
          volumeMounts:
            - name: "networkconfig"
              mountPath: "/etc/flannel-network.json"
          imagePullPolicy: "Always"
        # Runs the flannel daemon to enable vxlan networking between
        # container hosts.
        - name: flannel
          image: "{{ flannel_image_repo }}:{{ flannel_image_tag }}"
          env:
            # Cluster name
            - name: CLUSTER_NAME
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: cluster_name
            # The location of the etcd cluster.
            - name: FLANNELD_ETCD_ENDPOINTS
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_endpoints
            # The interface flannel should run on.
            - name: FLANNELD_IFACE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: flanneld_iface
            # Perform masquerade on traffic leaving the pod cidr.
            - name: FLANNELD_IP_MASQ
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: masquerade
            # Set etcd-prefix
            - name: DOCKER_OPT_ETCD_PREFIX
              value: "-etcd-prefix=/$(CLUSTER_NAME)/network"
            # Write the subnet.env file to the mounted directory.
            - name: FLANNELD_SUBNET_FILE
              value: "/run/flannel/subnet.env"
          command:
            - "/bin/sh"
            - "-c"
            - "/opt/bin/flanneld -etcd-prefix /$(CLUSTER_NAME)/network"
          ports:
            - hostPort: 10253
              containerPort: 10253
          securityContext:
            privileged: true
          volumeMounts:
            - name: "resolv"
              mountPath: "/etc/resolv.conf"
            - name: "run-flannel"
              mountPath: "/run/flannel"
        # Runs calico/node container on each Kubernetes node.  This
        # container programs network policy and local routes on each
        # host.
        - name: calico-node
          image: "{{ calico_node_image_repo }}:{{ calico_node_image_tag }}"
          env:
            # The location of the etcd cluster.
            - name: ETCD_ENDPOINTS
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_endpoints
            # Disable Calico BGP.  Calico is simply enforcing policy.
            - name: CALICO_NETWORKING
              value: "false"
            # Disable file logging so `kubectl logs` works.
            - name: CALICO_DISABLE_FILE_LOGGING
              value: "true"
          securityContext:
            privileged: true
          volumeMounts:
            - mountPath: /lib/modules
              name: lib-modules
              readOnly: true
            - mountPath: /var/run/calico
              name: var-run-calico
              readOnly: false