<div dir="ltr">Hi all,<div><br></div><div><a href="https://docs.openstack.org/mitaka/install-guide-ubuntu/environment-sql-database.html">https://docs.openstack.org/mitaka/install-guide-ubuntu/environment-sql-database.html</a></div><div><br></div><div>I don't know what's 'mysql_secure_installation' is, could tell me please?</div><div><br></div><div>Thank you.</div></div>