Redmine

Good day!
I use CentOS at VDS, with preinstalled Redmine on it:

Environment:
Redmine version 2.2.2.stable
Ruby version 1.9.3 (i686-linux)
Rails version 3.2.11
Environment production
Database adapter Mysql2
Redmine plugins:
no plugin installed

It's ok installed, running and working throught https. But when I save any changes to the settings, create projects, or doing anything else, then it redirect me to localhost/[other_part_url_of_target_page]. Again and again I must manually change url to the correct. How can I fix this?