Setting up openssh-server (1:5.3p1-3ubuntu7) ...
Creating SSH2 RSA key; this may take some time ...
Creating SSH2 DSA key; this may take some time ...
start: Job failed to start
无法初始化 ssh，已尝试重新安装。
SSH 服务器通过手动启动 /etc/init.d/ssh start
netstat -nlp 显示没有服务在 TCP 端口 22 上运行