Hi all, https://docs.openstack.org/mitaka/install-guide-ubuntu/environment-sql-database.html I don't know what's 'mysql_secure_installation' is, could tell me please? Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20170311/0710c57e/attachment.html>