sign_and_send_pubkey: signing failed: agent refused operation

上传公钥到服务器，而后在本地deepin系统终端登录服务器，报错：

zm@zm-PC:~/Desktop$ ssh admin@172.16.2.22

sign_and_send_pubkey: signing failed: agent refused operation

Permission denied (publickey).

解决：在本地终端执行如下两个命令：

eval "$(ssh-agent -s)"

ssh-add

结束。