root@167:/# service ssh status
● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: failed (Result: start-limit-hit) since Fri 2019-01-18 04:56:42 EST; 24min ago
  Process: 983 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=255)

Jan 18 04:56:42 167 systemd[1]: Failed to start OpenBSD Secure Shell server.
Jan 18 04:56:42 167 systemd[1]: ssh.service: Unit entered failed state.
Jan 18 04:56:42 167 systemd[1]: ssh.service: Failed with result 'exit-code'.
Jan 18 04:56:42 167 systemd[1]: ssh.service: Service hold-off time over, scheduling restart.
Jan 18 04:56:42 167 systemd[1]: Stopped OpenBSD Secure Shell server.
Jan 18 04:56:42 167 systemd[1]: ssh.service: Start request repeated too quickly.
Jan 18 04:56:42 167 systemd[1]: Failed to start OpenBSD Secure Shell server.
Jan 18 04:56:42 167 systemd[1]: ssh.service: Unit entered failed state.
Jan 18 04:56:42 167 systemd[1]: ssh.service: Failed with result 'start-limit-hit'.
root@167:/# service ssh start
Job for ssh.service failed because the control process exited with error code. See "systemctl status ssh.service" and "journalctl -xe" for details.
root@167:/# sshd -t
Missing privilege separation directory: /var/run/sshd