[root@k8s-master1 k8s-01]# docker login 172.18.8.214
Username: admin
Password:
Error response from daemon: Get https://172.18.8.214/v2/: dial tcp 172.18.8.214:443: connect: connection refused
[root@k8s-master1 k8s-01]#

Load the image locally and use HTTP or HTTPS. By default, the HTTPS protocol must be used. If you confirm that you do not use secure, you can use HTTP

[root@k8s-master1 k8s-01]# cat /etc/docker/daemon.json
{
	"registry-mirrors":["https://0cde955d3600f3000fe5c004160e0320.mirror.swr.myhuaweicloud.com"],
	"insecure-registries": ["172.18.8.214", "172.18.8.215"]  
}
[root@k8s-master1 k8s-01]#

Start docker validation

[root@k8s-master1 k8s-01]# systemctl restart docker
[root@k8s-master1 k8s-01]# docker login 172.18.8.214
Username: admin
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
[root@k8s-master1 k8s-01]#