I had this problem on Ubuntu 14.04 with Fail2Ban v0.8.11. Using "backend = polling" in /etc/fail2ban/jail.local seems to work for me.
see discussion at; https://github.com/fail2ban/fail2ban/issues/878 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1406996 Title: fail2ban fails to ban To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fail2ban/+bug/1406996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
