rancher-modify-node-hostname

rancher/rancher部署single集群，有个节点hostname是localhost，需要修正hostname,本质上重新注册节点，以此来达到修正hostname

resolve

• https://www.icode9.com/content-1-721989.html

#node

hostnamectl set-hostname centos-7-node4

#rancher-web

#drain node

#delete node

#run rancher-agent worker on node