Looking for logging into the Devstack Cannot site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Devstack Cannot site. After that you can login as usual with your login credentials.
https://ask.openstack.org/en/question/7787/cannot-login-horizon-dashboard/
https://openstack.nimeyo.com/26091/openstack-dev-horizon-cannot-login-to-dashboard
https://bugs.launchpad.net/bugs/1697352
https://askubuntu.com/questions/530945/can-not-login-to-openstack-dashboard/538247
https://stackoverflow.com/questions/14960138/openstack-dashboard-login-error-in-devstack-method
https://serverfault.com/questions/802363/migrating-devstack-to-subdomain-cannot-login-to-horizon-dashboard
https://serverfault.com/questions/496928/openstack-dashboard-horizon-fails-to-allow-log-in
https://www.packet.com/developers/guides/openstack-devstack/
https://github.com/openstack-dev/devstack
https://forum.linuxfoundation.org/categories/lfs252-class-forum
https://linuxacademy.com/community/posts/show/topic/16331-cant-ping-or-ssh-my-cirros-instance-from-my-computer-openstack
https://maestropandy.wordpress.com/2016/03/28/openstack-cannot-connect-to-instance/
https://www.mirantis.com/blog/how-to-install-openstack-on-your-local-machine-using-devstack/