Failed to start fail2ban service

[Username]

Hi.
The problem comes when I try to activate fail2ban. Before, it worked fine.

ERROR: f2bmng failed: Job for fail2ban.service failed. See 'systemctl status fail2ban.service' and 'journalctl -xn' for details.
ERROR:f2bmng:Failed to start fail2ban service

systemctl status fail2ban.service:

fail2ban.service - Fail2Ban Service
Loaded: loaded (/usr/lib/systemd/system/fail2ban.service; enabled)
Active: failed (Result: start-limit) since Sat 2015-09-19 04:04:53 SAMT; 13min ago
Docs: man:fail2ban(1)
Process: 4562 ExecStart=/usr/bin/fail2ban-client -x start (code=exited, status=255)

journalctl -xn:

Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5597]: ERROR Unable to read the filter
Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5597]: ERROR Errors in jail 'ssh'. Skipping...
Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5599]: ERROR Found no accessible config files for 'filter.d/ssh' under /etc/fail2ban
Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5599]: ERROR No section: 'Definition'
Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5599]: ERROR No section: 'Definition'
Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5599]: ERROR Unable to read the filter
Sep 19 04:21:02 vps-XXXXXX-XXXX.XXXXXX-XXXX.com fail2ban-client[5599]: ERROR Errors in jail 'ssh'. Skipping...

How to solve this problem?

CentOS Linux 7.1.1503 Plesk 12.0.18 , update #65

 

[Christy Jacob Mathai]

1) Kill all fail2ban running processes
2) Disable all jails you have set Plesk > Tools & settings > Fail2ban
3) Restart the fail2ban.

If it didn't fix, try to reinstall fail2ban from autoinstaller.

 

[Username]

Thanks.