阿里云服务器reboot后，用Xshell连接不上的解决办法

Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.
Connection closing...Socket close.

Connection closed by foreign host.

Disconnected from remote host(我的阿里云) at

 

 

 具体原因尚不清楚！

只知道去阿里云的控制台 > 点击实例名称 > 左侧【本实例远程命令】

发送远程命令

 输入命令：chmod 400 /etc/ssh/*