I got it. I'm using nginx with variables in log name. When you do so you must set log www-data writable.
If you don't make such a change you should leave log permissions as root adm. ref: http://wiki.nginx.org/NginxHttpLogModule#access_log ** Changed in: nginx (Ubuntu) Status: Triaged => New -- nginx logrotate conf file sets wrong owner for the log https://bugs.launchpad.net/bugs/499494 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs