[CentOS] Centos 5.1 distro: How to upgrade 5.0 to 5.1 with yum??

[Robinson Tiemuqinke]

--- Jancio Wodnik <jancio_wodnik at wp.pl> wrote:

> Robinson Tiemuqinke pisze:
> >
> >  Currently I download the Centos 5.0 upgrade
> packages
> > from mirror sites on Internet
> > (.../centos/5/updates/{SRPMS,i386,x86_64}/...),
> with
> > the arrival of Centos 5.1, are the existing Centos
> 5.0
> > update packages will be removed in honor of Centos
> 5.1
> > updates? or it will stay? And how about the Centos
> > 5.1's default packages in distro?   
> >
> >  Give an example here:
> >
> >  2.6.18-8.1.15 version kernel is the most recently
> > updated kernel for Centos 5.0 distro, if the
> Centos
> > 5.1 distro comes with 2.6.18-8.1.10000 kernel and
> in
> > the first few weeks there are no kernel updates
> for
> > 5.1, then how can I upgrade my kernel to
> > 2.6.18-8.1.10000 naturally -- will the
> > 2.6.18-8.1.10000 shows in the same update sources
> >
>
directories(.../centos/5/updates/{SRPMS,i386,x86_64/...)?
> >
> >  A similar question is: are the update diretories
> > contains only updates for 5.1 distro, or both 5.0
> and
> > 5.1?
> >
> >  Any clarifications are greatly appreciated.
> >   
> It's simply. All things from 5.0 to 5.1 will be done
> automatically via 
> yum (as standard update) or in rare situation can be
> possibly depedency 
> problem (when mixing different repo ?).
> 
> So don't worry. if you are really affraid - update
> only one box and test 
> ... test ... then update the rest.
> 
> I must say. In Centos 4 world all updates from 1 to
> 2 to 3 ... to 5 were 
> go in smooth way.
> 
> Regards,
> 
> Irens
> 

 I have had my local 5.0 update repository
(.../centos/5.0/updates/{SRPMS,i386,x86_64}/...) setup
and used it for my 900+ boxes's daily upgrade already.
The repository is synchronized with official Internet
mirrors daily to keep it current.

 My major concerns is: After the 5.1 is released, the
update channel/directory
(.../centos/5.1/updates/{SRPMS,i386,x86_64}/...)  may
change to contain only updates for 5.1
snapshot/release, not updates since 5.0. If so, then
all my Centos 5.0 boxes will suffer.  

 I have the serious concern because most Centos Mirror
sites on Internet ONLY keep the updates for latest
release/snapshot, not holds updates since the
base(3.0, 4.0, 5.0 etc) release. This seems like a big
problem if we would like to install from base|initial
release (3.0, 4.0, 5.0) continuously and then use a
single up-to-date update/ repository to upgrade
machines to current level.

For example, at Stanford's Centos 4 mirror site, only
4.5 is mirrored while all the other
4.0/4.1/4.2/4.3/4.4 are not. and in the updates/
directory only updates for 4.5 are kept there.  If the
same is true for all other sites honoring 5.0 series,
then I think I will definitely get screwed If I tried
to keep on using base 5.0 and daily synced  updates/
(exactly the same) for upgrade.

Any mirror sites hold updates since base release? Or I
have to keep on adding more repositories to yum's
configuration? 5.0 distro, 5.0 updates, 5.1 distro,
5.1 updates, 5.2 distro, 5.2 updates. etc. If so, then
it is too low-performanced and erro-prone. 

Any one have experience on upgrade Centos 4 releases
from 4.0 to 4.5 can shed a light on this?

Thanks a lot.

--Robinson   


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