RPM of MySQL Community Server 5.5.28 GA are available in remi repository for fedora and Enterpise Linux (RHEL, CentOS, ...).
To read :
This build use a spec file close to the one from Rawhide
WARNING: before upgrading, a full backup of your databases seems mandatory (a logical dump using mysqldump for example).
Simple to install, via yum:
yum --enablerepo=remi update mysql-server
For whose who prefer the download and manual installation, see the repository
Running the mysql_upgrade command is mandatory. 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:
Packages available for fedora ≥ 12. With fedora ≥ 15, service is managed by systemd (fedora 16 only for official packages).
Packages available for enterprise linux ≥ 5 (running on this server).