i wonder if a missing python3-systemd is the only reason for this bug: fail2ban + sshd works fine with backend=auto for me, and i have recommends installed.
So rather than changing the default 'backend', debian should just promote python3-systemd to 'depends'. On Fri, 21 Jul 2023, 07:03 Jeremy Davis, <jer...@turnkeylinux.org> wrote: > As a follow up (in case anyone hits the same issue as me): > > After setting 'backend = systemd' fail2ban refused to start!? > > It turns out that when using 'backend = systemd', python3-systemd is a > hard requirement. It is a recommended package for fail2ban but I have > recommends disabled by default, so had to manually install it. >