Suppose I want to upgrade a bunch of packages on a system, but in case the
upgrade produces unexpected, undesired results, I want to be able to rollback
the system to its original state. What is the best way to do that?
Often, I won't have, or be able to find, packages for the current installed
versions. I.e. If I haven't upgraded postgres for 2 years, it may be that I
can no longer find a package for the version I am currently running.
The 'rollback' feature of rpm and yum [1] looks promising, but I have a
few concerns with it:
a) why isn't the --rolback switch described in either the man page for rpm
or the output from --help? This makes me think the --rollback switch is
deprecated or otherwise unofficial.
b) how can I trim/purge the 'repackaged' rpms that by default go in
/var/spool/repackage [2]? I don't want to just leave them there forever,
but if I trim/purge/delete them, how will the rpm database be updated to know
that it can no longer rollback to the date that they were installed?
AtDhVaAnNkCsE
[1] http://www.freedomit.co.nz/kb-centos/enabling-yum/rpm-rollback
[2] http://www.linuxjournal.com/article/7034?page=0,1
--
Jon Detert
Sr. Systems Administrator
Infinity Healthcare
Milwaukee, Wisconsin
414-290-6759