I have similar problem:
fail2ban does not detect / bans the follwing entries in /var/log/apache2/error.log
[Tue Aug 25 16:10:51.646091 2015] [access_compat:error] [pid 4791] [client 77.252.213.157:4966] AH01797: client denied by server configuration: /var/www/wp-login.php [Tue Aug 25 16:13:58.386702 2015] [access_compat:error] [pid 4789] [client 52.18.200.197:65451] AH01797: client denied by server configuration: /var/www//wp-login.php
I have similar problem:
fail2ban does not detect / bans the follwing entries in /var/log/ apache2/ error.log
[Tue Aug 25 16:10:51.646091 2015] [access_ compat: error] [pid 4791] [client 77.252. 213.157: 4966] AH01797: client denied by server configuration: /var/www/ wp-login. php compat: error] [pid 4789] [client 52.18.200. 197:65451] AH01797: client denied by server configuration: /var/www/ /wp-login. php
[Tue Aug 25 16:13:58.386702 2015] [access_