---
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
  name: canal-node
  namespace: kube-system
  labels:
    k8s-app: canal-node
spec:
  selector:
    matchLabels:
      k8s-app: canal-node
  template:
    metadata:
      annotations:
        # Mark pod as critical for rescheduling (Will have no effect starting with kubernetes 1.12)
        scheduler.alpha.kubernetes.io/critical-pod: ''
      labels:
        k8s-app: canal-node
    spec:
{% if kube_version is version('v1.11.1', '>=') %}
      priorityClassName: system-node-critical
{% endif %}
      hostNetwork: true
      serviceAccountName: canal
      tolerations:
        - operator: Exists
        # Mark pod as critical for rescheduling (Will have no effect starting with kubernetes 1.12)
        - key: CriticalAddonsOnly
          operator: "Exists"
      volumes:
        # Used by calico/node.
        - name: lib-modules
          hostPath:
            path: /lib/modules
        - name: var-lib-calico
          hostPath:
            path: /var/lib/calico
        - 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
        - name: "canal-certs"
          hostPath:
            path: "{{ canal_cert_dir }}"
        - name: xtables-lock
          hostPath:
            path: /run/xtables.lock
            type: FileOrCreate
      containers:
        # Runs the flannel daemon to enable vxlan networking between
        # container hosts.
        - name: flannel
          image: "{{ flannel_image_repo }}:{{ flannel_image_tag }}"
          imagePullPolicy: {{ k8s_image_pull_policy }}
          resources:
            limits:
              cpu: {{ flannel_cpu_limit }}
              memory: {{ flannel_memory_limit }}
            requests:
              cpu: {{ flannel_cpu_requests }}
              memory: {{ flannel_memory_requests }}
          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=/$(CLUSTER_NAME)/network"
            # Write the subnet.env file to the mounted directory.
            - name: FLANNELD_SUBNET_FILE
              value: "/run/flannel/subnet.env"
            # Etcd SSL vars
            - name: ETCD_CA_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_cafile
            - name: ETCD_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_certfile
            - name: ETCD_KEY_FILE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_keyfile
          command:
            - "/bin/sh"
            - "-c"
            - "/opt/bin/flanneld -etcd-prefix /$(CLUSTER_NAME)/network -etcd-cafile $(ETCD_CA_CERT_FILE) -etcd-certfile $(ETCD_CERT_FILE) -etcd-keyfile $(ETCD_KEY_FILE)"
          ports:
            - hostPort: 10253
              containerPort: 10253
          securityContext:
            privileged: true
          volumeMounts:
            - name: "resolv"
              mountPath: "/etc/resolv.conf"
            - name: "run-flannel"
              mountPath: "/run/flannel"
            - name: "canal-certs"
              mountPath: "{{ canal_cert_dir }}"
              readOnly: true
            - name: xtables-lock
              mountPath: /run/xtables.lock
              readOnly: false
        # 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 }}"
          imagePullPolicy: {{ k8s_image_pull_policy }}
          resources:
            limits:
              cpu: {{ calico_node_cpu_limit }}
              memory: {{ calico_node_memory_limit }}
            requests:
              cpu: {{ calico_node_cpu_requests }}
              memory: {{ calico_node_memory_requests }}
          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_BACKEND
              value: "none"
            # Cluster type to identify the deployment type
            - name: CLUSTER_TYPE
              value: "kubespray,canal"
            # Disable file logging so `kubectl logs` works.
            - name: CALICO_DISABLE_FILE_LOGGING
              value: "true"
            # Set noderef for node controller.
            - name: CALICO_K8S_NODE_REF
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: FELIX_HEALTHENABLED
              value: "true"
            # Etcd SSL vars
            - name: ETCD_CA_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_cafile
            - name: ETCD_CERT_FILE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_certfile
            - name: ETCD_KEY_FILE
              valueFrom:
                configMapKeyRef:
                  name: canal-config
                  key: etcd_keyfile
            - name: NODENAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
          securityContext:
            privileged: true
          livenessProbe:
            httpGet:
              path: /liveness
              port: 9099
            periodSeconds: 10
            initialDelaySeconds: 10
            failureThreshold: 6
          readinessProbe:
            httpGet:
              path: /readiness
              port: 9099
            periodSeconds: 10
          volumeMounts:
            - mountPath: /lib/modules
              name: lib-modules
              readOnly: true
            - mountPath: /var/run/calico
              name: var-run-calico
              readOnly: false
            - mountPath: /var/lib/calico
              name: var-lib-calico
              readOnly: false
            - name: "canal-certs"
              mountPath: "{{ canal_cert_dir }}"
              readOnly: true
  updateStrategy:
    rollingUpdate:
      maxUnavailable: {{ serial | default('20%') }}
    type: RollingUpdate
