报错如下：
Failed: SSHProtocolFailure: Session.connect: java.net.SocketException: Connection reset
connection is closed by foreign host
解决办法：
Ssh 连接的问题
修改/etc/ssh/sshd_config中#MaxStartups，将其改为MaxStartups 1000
修改/etc/ssh/sshd_config中LoginGraceTime 120,将其改为LoginGraceTime 0，其中0表示不限制连接时间
Service sshd restart
