<p>Because docker lacked a docker bridge,So i created a new bridge and add it to docker's daemon.json file. But In my k8s cluster, the master is a single node, not HA. Now I need to restart all my work nodes and master node in my cluster. Is there anything I should pay attention to? </p>

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<p>If you are using replicaset, daemonset, deployment, statefulset etc for which there is a controller that is always trying to converge the state of your workload pods to the desired state there will be new pods created automatically. You will experience a brief downtime until new pods are spawned. But if you are running pods directly then pods will not be recreated. That's why it's not recommended to deploy pods directly.</p>

<p>Since you have single master node which is also hosting etcd you need to backup ETCD data and restore it after you restarted master.</p>
