● kubelet.service - kubelet: The Kubernetes Node Agent
   Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
  Drop-In: /usr/lib/systemd/system/kubelet.service.d
           └─10-kubeadm.conf
   Active: active (running) since Mon 2020-05-04 08:13:14 UTC; 19min ago
     Docs: https://kubernetes.io/docs/
 Main PID: 9860 (kubelet)
    Tasks: 15 (limit: 8217)
   Memory: 29.0M
   CGroup: /system.slice/kubelet.service
           └─9860 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --cgroup-driver=systemd --network-plugin=cni --pod-infra-container-image=k8s.gcr.io/pause:3.2

May 04 08:33:05 k8stest-1 kubelet[9860]:       "type": "firewall"
May 04 08:33:05 k8stest-1 kubelet[9860]:     },
May 04 08:33:05 k8stest-1 kubelet[9860]:     {
May 04 08:33:05 k8stest-1 kubelet[9860]:       "type": "tuning"
May 04 08:33:05 k8stest-1 kubelet[9860]:     }
May 04 08:33:05 k8stest-1 kubelet[9860]:   ]
May 04 08:33:05 k8stest-1 kubelet[9860]: }
May 04 08:33:05 k8stest-1 kubelet[9860]: : [failed to find plugin "bridge" in path [/opt/cni/bin] failed to find plugin "portmap" in path [/opt/cni/bin] failed to find plugin "firewall" in path [/opt/cni/bin] failed to find plugin "tuning" in path [/opt/cni/bin]]
May 04 08:33:05 k8stest-1 kubelet[9860]: W0504 08:33:05.168769    9860 cni.go:237] Unable to update cni config: no valid networks found in /etc/cni/net.d
May 04 08:33:05 k8stest-1 kubelet[9860]: E0504 08:33:05.576350    9860 kubelet.go:2187] Container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized