Re: 8.0.39 not available from 8.036 after RHEL 7 -> 8 upgrade

[Balasubramanian Kandasamy]

That's correct.

(EL8 systems only) EL8-based systems such as RHEL8 and Oracle Linux 8 include a MySQL module that is enabled by default. Unless this module is disabled, it masks packages provided by MySQL repositories. To disable the included module and make the MySQL repository packages visible, use the following command (for dnf-enabled systems, replace yum in the command with dnf):

$> sudo yum module disable mysql

Install MySQL by the following command (for dnf-enabled systems, replace yum in the command with dnf):

$> sudo yum install mysql-community-server

Reference:
https://dev.mysql.com/doc/refman/8.4/en/linux-installation-yum-repo.html