You have been subscribed to a public bug: there is a bug in post script of openstack-horizon.spec :
%post -n openstack-dashboard # ugly hack to set a unique SECRET_KEY sed -i "/^from horizon.utils import secret_key$/d" /etc/openstack-dashboard/local_settings sed -i "/^SECRET_KEY.*$/{N;s/^.*$/SECRET_KEY='`openssl rand -hex 10`'/}" /etc/openstack-dashboard/local_settings When upgrading dashboard rpm, SECRET_KEY in /etc/openstack- dashboard/local_settings will be updated, and it will be swallow a line of the config file at the same time. so after upgrding openstack- dashboard for twelve times, the line of "CACHES = {" will be deleted, and the bug happened. ** Affects: horizon Importance: Undecided Status: New -- when upgrade openstack-dashboard many times, httpd service start failed https://bugs.launchpad.net/bugs/1526137 You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Dashboard (Horizon). -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp