#https://gist.github.com/jjo/8c616aaf795284bb5b85d02143745f63
apiVersion: v1
kind: ConfigMap
metadata:
  name: kube-router-cfg
  namespace: kube-system
  labels:
    tier: node
    k8s-app: kube-router
data:
  cni-conf.json: |
    {
       "cniVersion":"0.3.0",
       "name":"mynet",
       "plugins":[
          {
             "name":"kubernetes",
             "type":"bridge",
             "bridge":"kube-bridge",
             "isDefaultGateway":true,
             "hairpinMode":true,
             "ipam":{
                "type":"host-local"
             }
          }
       ]
    }
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-router
  namespace: kube-system
  labels:
    k8s-app: kube-router
spec:
  selector:
    matchLabels:
      k8s-app: kube-router
  template:
    metadata:
      labels:
        k8s-app: kube-router
    spec:
      priorityClassName: system-node-critical
      containers:
      - name: kube-router
        image: docker.io/cloudnativelabs/kube-router
        args:
          - "--run-router=true"
          - "--run-firewall=true"
          - "--run-service-proxy=true"
          - "--bgp-graceful-restart=true"
          - "--hairpin-mode=true"
          - "--enable-cni=true"
          - "--advertise-cluster-ip=true"
          - "--advertise-external-ip=true"
          - "--advertise-loadbalancer-ip=true"
          - "--kubeconfig=/var/lib/kube-router/kubeconfig"
            #- "--master=https://192.168.10.13:6443"
        securityContext:
          privileged: true
        imagePullPolicy: Always
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: KUBE_ROUTER_CNI_CONF_FILE
          value: /etc/cni/net.d/10-kuberouter.conflist
        livenessProbe:
          httpGet:
            path: /healthz
            port: 20244
          initialDelaySeconds: 10
          periodSeconds: 3
        volumeMounts:
        - name: lib-modules
          mountPath: /lib/modules
          readOnly: true
        - name: cni-conf-dir
          mountPath: /etc/cni/net.d
        - name: kubeconfig
          mountPath: /var/lib/kube-router/kubeconfig
          readOnly: true
        - name: xtables-lock
          mountPath: /run/xtables.lock
          readOnly: false
      initContainers:
      - name: install-cni
        image: docker.io/cloudnativelabs/kube-router
        imagePullPolicy: Always
        command:
        - /bin/sh
        - -c
        - set -e -x;
          if [ ! -f /etc/cni/net.d/10-kuberouter.conflist ]; then
            if [ -f /etc/cni/net.d/*.conf ]; then
              rm -f /etc/cni/net.d/*.conf;
            fi;
            TMP=/etc/cni/net.d/.tmp-kuberouter-cfg;
            cp /etc/kube-router/cni-conf.json ${TMP};
            mv ${TMP} /etc/cni/net.d/10-kuberouter.conflist;
          fi
        volumeMounts:
        - name: cni-conf-dir
          mountPath: /etc/cni/net.d
        - name: kube-router-cfg
          mountPath: /etc/kube-router
      hostNetwork: true
      serviceAccountName: kube-router
      serviceAccount: kube-router
      tolerations:
      - effect: NoSchedule
        operator: Exists
      - key: CriticalAddonsOnly
        operator: Exists
      - effect: NoExecute
        operator: Exists
      volumes:
      - name: lib-modules
        hostPath:
          path: /lib/modules
      - name: cni-conf-dir
        hostPath:
          path: /etc/cni/net.d
      - name: kube-router-cfg
        configMap:
          name: kube-router-cfg
      - name: kubeconfig
        hostPath:
          path: /var/lib/kube-router/kubeconfig
      - name: xtables-lock
        hostPath:
          path: /run/xtables.lock
          type: FileOrCreate