> sudo service nginx-sp restart

Job for nginx-sp.service failed because the control process exited with error code. See "systemctl status nginx-sp.service" and "journalctl -xe" for details.

======

> systemctl status nginx-sp.service

nginx-sp.service - nginx-sp
   Loaded: loaded (/lib/systemd/system/nginx-sp.service; enabled; vendor preset:
   Active: inactive (dead) (Result: exit-code) since Tue 2017-08-22 08:48:49 UTC
  Process: 6664 ExecStop=/bin/kill -s QUIT $MAINPID (code=exited, status=0/SUCCE
  Process: 3757 ExecStartPost=/bin/sleep 0.1 (code=exited, status=0/SUCCESS)
  Process: 3749 ExecStart=/opt/sp/nginx/sbin/nginx (code=exited, status=0/SUCCES
  Process: 6805 ExecStartPre=/opt/sp/nginx/sbin/nginx -t (code=exited, status=1/
 Main PID: 3753 (code=exited, status=0/SUCCESS)

nginx-sp.service: Control proce
Failed to start nginx-sp.
nginx-sp.service: Unit entered
nginx-sp.service: Failed with r
nginx-sp.service: Service hold-
Stopped nginx-sp.
nginx-sp.service: Start request
Failed to start nginx-sp.
lines 1-17/17 (END)

======

> journalctl -xe

Failed password for root from 1
Failed password for root from 1
Connection closed by 104.37.214
PAM 2 more authentication failu
pam_unix(sshd:auth): authentica
Failed password for root from 6
Failed password for root from 6
pam_unix(sshd:auth): authentica
Failed password for root from 6
Received disconnect from 61.177
Disconnected from 61.177.172.60
PAM 2 more authentication failu
Failed password for root from 6
Received disconnect from 61.177
Disconnected from 61.177.172.60
pam_unix(sshd:auth): authentica
Failed password for root from 1
Received disconnect from 116.31
Disconnected from 116.31.116.41
Connection closed by 116.31.116
Connection closed by 61.177.172
Connection reset by 61.177.172.
pam_unix(sshd:auth): authentica
lines 1275-1297/1297 (END)