Fail2ban fails on Ubuntu 24.04

[enoch85]

root@nextcloud:/etc/apache2/sites-available# systemctl status fail2ban
× fail2ban.service - Fail2Ban Service
     Loaded: loaded (/usr/lib/systemd/system/fail2ban.service; enabled; preset: enabled)
     Active: failed (Result: exit-code) since Tue 2024-05-14 14:01:40 CEST; 5s ago
   Duration: 105ms
       Docs: man:fail2ban(1)
    Process: 256724 ExecStart=/usr/bin/fail2ban-server -xf start (code=exited, status=255/EXCEPTION)
   Main PID: 256724 (code=exited, status=255/EXCEPTION)
        CPU: 104ms

May 14 14:01:40 nextcloud systemd[1]: Started fail2ban.service - Fail2Ban Service.
May 14 14:01:40 nextcloud fail2ban-server[256724]: 2024-05-14 14:01:40,657 fail2ban.configreader   [256724]: WARNING 'allowipv6' not defined in 'Definition'. Using default one: 'auto'
May 14 14:01:40 nextcloud fail2ban-server[256724]: 2024-05-14 14:01:40,677 fail2ban                [256724]: ERROR   No module named 'asynchat'
May 14 14:01:40 nextcloud systemd[1]: fail2ban.service: Main process exited, code=exited, status=255/EXCEPTION
May 14 14:01:40 nextcloud systemd[1]: fail2ban.service: Failed with result 'exit-code'.

[memesalot]

This is a bug with fail2ban and Ubuntu 24.04 with the current version off apt. Install the .deb manually from the fail2ban github releases. Issue will go away.

[enoch85]

Yeah, I'm waiting for a new release. We won't do any special case here. We want it as default as possible.