When trying to update or install something via yum you receive an error message stating that the package is "not available". This is because you are on a 64bit node using a 32bit template.
You can rebuild to one of our 64bit templates or do the below:
Please issue the following commands:
yum clean all
echo i686-redhat-linux > /etc/rpm/platform
You should then be able to update or install with yum