现象：拉取镜像报Error response from daemon: Get https://: http: server gave HTTP response to HTTPS client
harbor默认是https协议的，如果想要通过http协议拉取harbor的镜像需要修改k8s每个节点上的/etc/docker/daemon.json文件
1.添加 "insecure-registries": ["x.x.x.x"], # 仓库地址
2.重启docker 服务
systemctl daemon-reload && systemctl restart docker
