I am posting a copy of the issue I just posted in github fail2ban but is seems that the issue started with the last clearos update https://github.com/fail2ban/fail2ban/issues/2869
Fail2Ban v0.11.1 on ClearOS
It seems that action files stopped supporting "<bantime>" with this update, I just checked my f2b logs and it hasn't been working for the past few months, i have millions of errors on my log files like
my action file contains
Replacing `<bantime>` with the actual bantime in seconds seems to work.
the action is specified in my jail as follows