Upgrade-procedure.md

@@ -2,7 +2,7 @@
 
 This is a documentation for fairkom sysadmins. We have to upgrade nextcloud every few months. We share our experience and steps here.
 
-1. announce maintenance with Announcement app
+1. announce maintenance with Announcement app (be careful, this also is sent with e-mail, only 20 mails per minute)
 1. in /var/www/nextcloud/config/config.php set `'maintenance' => true,`
 1. do a manual DB backup and copy to /mnt/backup2/faircloud_db (= external backup drive)
 1. set 'maintenance' => false or set to maintenance page in `/etc/apache2/sites-enabled/nextcloud.conf`