kube-flannel.yml

---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
  name: psp.flannel.unprivileged
  annotations:
    seccomp.security.alpha.kubernetes.io/allowedProfileNames: docker/default
    seccomp.security.alpha.kubernetes.io/defaultProfileName: docker/default
    apparmor.security.beta.kubernetes.io/allowedProfileNames: runtime/default
    apparmor.security.beta.kubernetes.io/defaultProfileName: runtime/default    
spec:
  # privileged: false
  volumes:
  - configMap
  - secret
  - emptyDir
  - hostPath
  allowedHostPaths:
  - pathPrefix: "/etc/cni/net.d"
  - pathPrefix: "/etc/kube-flannel"
  - pathPrefix: "/run/flannel"
  # readOnlyRootFilesystem: false
  # Users and groups
  runAsUser:
    rule: RunAsAny
  supplementalGroups:
    rule: RunAsAny
  fsGroup:
    rule: RunAsAny
  # Privilege Escalation
  allowPrivilegeEscalation: false
  defaultAllowPrivilegeEscalation: false
  # Capabilities
  allowedCapabilities: ['NET_ADMIN', 'NET_RAW']
  # defaultAddCapabilities: []
  # requiredDropCapabilities: []
  # Host namespaces
  # hostPID: false
  # hostIPC: false
  hostNetwork: true
  hostPorts:
  - min: 0
    max: 65535
  # SELinux
  seLinux:
    # SELinux is unused in CaaSP
    rule: 'RunAsAny'
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: flannel
rules:
- apiGroups: ['extensions']
  resources: ['podsecuritypolicies']
  verbs: ['use']
  resourceNames: ['psp.flannel.unprivileged']
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - get
- apiGroups:
  - ""
  resources:
  - nodes
  verbs:
  - list
  - watch
- apiGroups:
  - ""
  resources:
  - nodes/status
  verbs:
  - patch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: flannel
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: flannel
subjects:
- kind: ServiceAccount
  name: flannel
  namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: flannel
  namespace: kube-system
---
kind: ConfigMap
apiVersion: v1
metadata:
  name: kube-flannel-cfg
  namespace: kube-system
  labels:
    tier: node
    app: flannel
data:
  cni-conf.json: |
    {
      "name": "vxlan0",
      "cniVersion": "0.3.1",
      "plugins": [{
          "type": "flannel",
          "delegate": {
            "isDefaultGateway": true
          }
        },
        {
          "type": "portmap",
          "capabilities": {
            "portMappings": true
          }
        }
      ]
    }
  net-conf.json: |
    {
      "Network": "10.42.0.0/16",
      "SubnetLen": 24,
      "Name": "vxlan0",
      "Backend": {
        "Type": "vxlan",
        "VNI" : 4096,
        "Port": 4789
      }
    }
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-flannel
  namespace: kube-system
  labels:
    tier: node
    app: flannel
spec:
  selector:
    matchLabels:
      app: flannel
  template:
    metadata:
      labels:
        tier: node
        app: flannel
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: beta.kubernetes.io/os
                operator: NotIn
                values:
                - windows
      # nodeSelector:
      #   kubernetes.io/os: linux
      priorityClassName: system-node-critical
      containers:
      - command:
        - /install-cni.sh
        env:
        - name: CNI_NETWORK_CONFIG
          valueFrom:
            configMapKeyRef:
              key: cni-conf.json
              name: kube-flannel-cfg
        - name: CNI_CONF_NAME
          value: 10-flannel.conflist
        name: install-cni
        imagePullPolicy: IfNotPresent
        image: rancher/flannel-cni:v0.3.0-rancher6 
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File                
        volumeMounts:
        - mountPath: /host/etc/cni/net.d
          name: cni
        - mountPath: /host/opt/cni/bin/
          name: host-cni-bin
         
      - args:
        - --ip-masq
        - --kube-subnet-mgr
        - --v=1
        command:
          - /opt/bin/flanneld        
        resources:
          requests:
            cpu: "100m"
            memory: "50Mi"
          limits:
            cpu: "100m"
            memory: "50Mi"
        env:
        - name: POD_NAME
          valueFrom:
            fieldRef:
              apiVersion: v1
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              apiVersion: v1
              fieldPath: metadata.namespace               
        - name: TARGET_NAMESPACE
          value: kube-system
        - name: KUBERNETES_SERVICE_HOST
          value: 10.43.0.1
        - name: KUBERNETES_SERVICE_PORT
          value: "443"
        - name: NO_PROXY
          value: .svc,.cluster.local,10.42.0.0/16,10.43.0.0/16
        name: kube-flannel
        image: rancher/coreos-flannel:v0.13.0-rancher1
        imagePullPolicy: IfNotPresent
        securityContext:
          # privileged: true
          privileged: false
          capabilities:
            add: ["NET_ADMIN", "NET_RAW"]  
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File             
        volumeMounts:
        - mountPath: /run
          name: run
        - mountPath: /etc/cni/net.d
          name: cni
        - mountPath: /etc/kube-flannel/
          name: flannel-cfg
      serviceAccount: flannel
      serviceAccountName: flannel
      hostNetwork: true
      dnsPolicy: ClusterFirst
      securityContext: {}
      restartPolicy: Always
      tolerations:
      - operator: Exists          
      volumes:
      - hostPath:
          path: /run
          type: ""
        name: run
      - hostPath:
          path: /etc/cni/net.d
          type: ""
        name: cni
      - configMap:
          defaultMode: 420
          name: kube-flannel-cfg
        name: flannel-cfg
      - hostPath:
          path: /opt/cni/bin
          type: ""
        name: host-cni-bin