After update to NC17 fail2ban stopped working

[sky]

Nextcloud 17 and Fail2ban: Please check your regular expression

Hello there, it came to my attention that an already set up Nextcloud with Fail2ban doesn’t ban properly after the update to Nextcloud 17. The regular expression used up to Nextcloud 16 (e.g. in /etc/fail2ban/filter.d/nextcloud.local) doesn’t match the log entries on Nextcloud 17. I’ve updated the contents of the filter file for Nextcloud to this one: [Definition] ^{"reqId":".*","level":2,"time":".*","remoteAddr":".*","user":".*","app":".*","method":".*","url":".*","message":"Log…