[CentOS] Upgrading to CentOS 7

Tue May 19 14:12:17 UTC 2015
Timothy Murphy <gayleard at eircom.net>

Johnny Hughes wrote:

> On 05/19/2015 07:43 AM, Timothy Murphy wrote:
>> I read in <http://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool>
>> "Warning: use of this tool is currently not recommended as several
>> system- critical packages are of a higher version number in CentOS 6.6
>> than they are in CentOS 7 so those do not get upgraded correctly. This
>> renders yum and several other system tools non-functional."
>> Does this still hold?
>> It seems to me a bit pointless to offer a tool
>> with the warning that it does not work.

> It is not pointless, some people want to do it.
> I would not use it.

First of all, thank you very much, Johnny, for all your work.
You are doing a fantastic job.

However, I find your answer here a little odd.
It's a bit like the surgeon saying, "I wouldn't have this operation,
but if you want it just lie back."

> The best way to do any major update is to backup your data, install the
> OS, bring back your data and make all the newer services (if you are
> moving things like databases or web directories, etc.).
> Some people want to take shortcuts to this procedure, and with enough
> effort, that tool can work.  But to me, there is too much effort and
> there are too many older packages left around as clutter, so I would
> never do it.

If it would take you a lot of time and effort to clean up after the upgrade
I can't imagine how long it would take me.

> Red Hat released this, so we rebuilt it .. that does not mean one should
> use it.


Timothy Murphy  
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin