expected key exchange group packet from server错误解决过程

添加到 /etc/ssh/sshd_config

KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1

然后保存 

重启 systemctl restart sshd