转自：http://blog.csdn.net/qy924565830/article/details/52164256
http://blog.csdn.net/coder_xia/article/details/50382278
问题描述：运行paromiko连接远程服务器失败：FAIL : SSHException: Incompatible ssh peer (no acceptable kex algorithm)
定位原因：由于ssh 6.7以上屏蔽不安全算法
解决办法：在/etc/ssh/sshd_config最后加上
KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
重启ssh服务，问题解决。