出现这个错误的原因是没有权限,
su - root
输入密码.重新执行:
/etc/init.d/sshd
startGenerating SSH1 RSA host key:                       [OK]
Generating SSH2 RSA host key:                            [OK]
Generating SSH2 DSA host key:                            [OK]
Starting sshd:                                           [OK]
成功!