Hello thomasbennett,
WordOps already provide a fail2ban jail/filter to secure wp-login.php : https://github.com/WordOps/WordOps/blob/master/wo/cli/templates/fail2ban-wp.mustache
You can list fail2ban jails with the command sudo fail2ban-client status
, and see each jail status with sudo fail2ban-client status <jail-name>
If thoses jails are missing on your server, just remove fail2ban with wo stack remove --fail2ban
and then reinstall it with wo stack install --fail2ban
to deploy jails from our templates