I am running CentOS 7 (firewalld not iptables) with the fail2ban v0.9.3.
How do I clear all bans without doing them one by one?
The fail2ban-client offers not such an option. May this helps you (firewalld uses iptables).
Or you could try following (not supported):
1. Get the Database location
fail2ban-client get dbfile
2. Stop the fail2ban service
service fail2ban stop
3. Modify the table 'bans'
Sqliteman
can help you to modify the timestamp or delete entry's4. Start fail2ban Service
service fail2ban start