DB Governor unable to upgrade MySQL: package was not downloaded

Issue

• DB Governor unable to upgrade MySQL

  #/usr/share/lve/dbgovernor/mysqlgovernor.py --install
  ...
  WARNING!!!! Package numactl-devel.x86_64 was not downloaded
  WARNING!!!! Package numactl.x86_64 was not downloaded
  Package /usr/share/lve/dbgovernor/tmp/governor-tmp/new/mysqlclient18-5.5.62-3.el7.cloudlinux.x86_64.rpm was loaded
  WARNING!!!! Package libaio.x86_64 was not downloaded
  Package /usr/share/lve/dbgovernor/tmp/governor-tmp/new/cl-MySQL-meta-client-5.7.40-1.el7.cloudlinux.x86_64.rpm was loaded
  WARNING!!!! Package cl-MySQL57-common was not downloaded
  WARNING!!!! Package cl-MySQL57-server was not downloaded
  WARNING!!!! Package cl-MySQL57-shared was not downloaded
  WARNING!!!! Package cl-MySQL57-client was not downloaded
  WARNING!!!! Package cl-MySQL57-devel was not downloaded
  Install of MySQL packages will not be completed because not all new packages have been downloaded

Environment

• CloudLinux OS
• DB Governor

Solution

Ensure that the server is registered in CLN and yum "rhnplugin" plugin is enabled.

# yum check-update | head -5 | grep -E 'CLN|rhnplugin'

Cause

yum "rhnplugin" plugin was disabled

Useful links

How to Register CloudLinux OS with Key-based/IP-based Licenses?