Install mysql 5.1 on RHEL 7.1

Hello,

I had a requirement of upgrading OS RHEL 5.6 to RHEL 7.1 , in that server we are running a java application (Hyperic 4.4) with mysql 5.1 DB. How could i plan this OS upgrading without disturbing mysql current installed & application packages.

If i would suppose go for a complete re-installation of OS to RHEL 7.1 and migrating application, How could i install mysql -5.1 server in RHEL 7.1 .

Thanks