The config file path for the configure fail2ban.conf task should use the .local extension, like the configure jail.local task uses.
Every .conf file can be overridden with a file named .local. The .conf file is read first, then .local, with later settings overriding earlier ones. Thus, a .local file doesn't have to include everything in the corresponding .conf file, only those settings that you wish to override.
Modifications should take place in the .local and not in the .conf. This avoids merging problem when upgrading. These files are well documented and detailed information should be available there.
The config file path for the
configure fail2ban.conf
task should use the.local
extension, like theconfigure jail.local
task uses.Source: https://www.fail2ban.org/wiki/index.php/MANUAL_0_8