Say there's an application that install to
/opt/ directory. I update it with
yum. I do a full server backup, that is all the file systems (/opt/ maps to the root directory). Now, I discover a bug post upgrade or have the need for whatever reason to restore to the pre upgrade state. Should I:
a) restore the whole /opt/application directory along with its files and sub-directories;
b) perform a complete system restore to the last backup
c) or perform a
yum roll back How to use yum history to roll back an update in Red Hat Enterprise Linux 6 , 7?