при первом запуске дистрибутива не сгенерировались ключи ssh. В результате
сервис sshd не стартовал.

[root@test209 ~]# service sshd status
sshd is stopped
[root@test209 ~]# service sshd restart
Checking sshd configuration: sshd: Could not load host key:
/etc/openssh/ssh_host_rsa_key
sshd: Could not load host key: /etc/openssh/ssh_host_dsa_key
Disabling protocol version 2. Could not load host key
sshd: no hostkeys available -- exiting.
                                                                               
                                 [FAILED]
[root@test209 ~]# /etc/init.d/sshd restart
Checking sshd configuration: sshd: Could not load host key:
/etc/openssh/ssh_host_rsa_key
sshd: Could not load host key: /etc/openssh/ssh_host_dsa_key
Disabling protocol version 2. Could not load host key
sshd: no hostkeys available -- exiting.
                                                                               
                                 [FAILED]

[root@test209 ~]# /etc/init.d/sshd start
Generating SSH2 RSA host key:                                                  
                                 [ DONE ]
Generating SSH2 DSA host key:                                                  
                                 [ DONE ]
Generating SSH1 RSA host key:                                                  
                                 [ DONE ]
Starting sshd service:                                                         
                                 [ DONE ]
[root@test209 ~]# service sshd status
sshd is running