This build use a spec file close to the one from Rawhide. The Federated "storage engines" is activated by default by the launch script.

For the new InnoDB plugin, the configuration file(/etc/my.cnf) contains the directives need to enable it.

WARNING: before upgrading, a full backup of your databases seems mandatory (a logical dump using mysqldump for example).

Simplest way to install is to use  yum !

yum --enablerepo remi update mysql-server

For whose who prefer the download and manual installation, see the repository

Like after each upgrade, running the mysql_upgrade command is required. It checks all tables in all databases for incompatibilities with the current version of MySQL Server. If a table is found to have a possible incompatibility, it is checked. If any problems are found, the table is repaired. In all case, reading the documentation is recommended:

If you often need to read the manual, create a launcher with the command

chmsee /usr/share/doc/mysql-5.1.38/manual.chm

No update for the mysql-manual package, but version 5.1.38 still available.