While testing installation steps with MySQL 5.7.7-rc, surely you will find much more improvements, changes, deprecated functionality and etc.
The interesting one is activating VALIDATE PASSWORD PLUGIN via mysql_secure_installation script. Which we use by mean “securing” MySQL installations.
I will write a separate topic about MySQL 5.7.7-rc installation steps from source, with related BUG reports.
So after first run:
[root@centos7_vm mysql]# bin/mysql_secure_installation --socket=/opt/mysql/datadir/mysqld-new.sock Securing the MySQL server deployment. Connecting to MySQL server using password in …