在云服务器端口输入ssh-copy-id user@remote_server_ip后提示Source of key(s) to be installed: "/root/.ssh/id_rsa.pub；attempting to log in with the new key(s), to filter out any that are already installed；1 key(s) remain to be installed -- if you are prompted now it is to install the new keys 且还需要输入云服务器密码

这是正常的操作流程，ssh-copy-id命令会将你本地的公钥文件（默认为/root/.ssh/id_rsa.pub）复制到远程服务器的~/.ssh/authorized_keys文件中，来实现免密码登录。在第一次执行这个命令时，需要输入远程服务器的用户密码进行验证。如果你在执行ssh-copy-id命令后被提示输入密码，那么你应该输入远程服务器的用户密码即可。如果你已经成功地将公钥复制到了远程服务器中，那么下次登录时就不需要再输入密码了。