The bug comes from configuring two instances with the same db user. dbconfig-common regenerates a random password when configuring the second instance, wiping the password set for the first instance that has already been recorded in database.yml.
Workaround : get the password of the second instance yy from /etc/redmine/yy/database.yml and set it in the database.yml of the first instance. I am working on a fix. Jérémy. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org