[Centos] migrating RH9 to CentOS-3

John Newbigin jn at it.swin.edu.au
Thu Sep 9 01:04:02 UTC 2004


Rick Graves wrote:

> John,
> 
> I think the error that I encountered earlier this week
> was because I am now blocked from accessing the main
> CentOS mirror.
> 
> At any rate, today I tried a different mirror, and at
> least yum would run.
> 
> I am still on the RH9 X install.  
> 
> I tried yum update, and got this:
> 
> Resolving dependencies
> .......Unable to satisfy dependencies
> Package mozilla-psm needs mozilla = 37:1.4-3.0.18,
> this is not available.
> Package mozilla-psm needs mozilla-nss = 37:1.4-3.0.18,
> this is not available.
> 
> Can you shed anly light on this?
There will be cases which need special handling.  I think mozilla-psm is 
now included in the core mozilla package.  If the new mozilla does not 
have the correct tags to tell yum that mozilla-psm can be removed then 
you have have to remove it manually beforehand.

These are the kinds of tasks which we need documented.

I was also thinking, it might be possible to create dummy packages which 
provide these kinds of dependencies so you can add the dummy module to 
your yum.conf and then it will be more automatic.  There are others on 
the list that know more about yum than me and might have some ideas.

John.

> 
> Thanks,
> 
> Rick
> 
> 
> 
> 
> --- John Newbigin <jn at it.swin.edu.au> wrote:
> 
> 
>>Rick Graves wrote:
>>
>>
>>>John,
>>>
>>>I took another look at your migration page.  I
>>
>>have
>>
>>>two questions.
>>>
>>>1) It seems the errata support only applies to
>>
>>moving
>>
>>>from RHEL3 to CentOS-3 -- correct?
>>
>>And RHEL2.1 to CentOS-2.
>>
>>>2) The Live Update option does not apply to moving
>>
>>off
>>
>>>RedHat 9, but does apply to moving off RedHat 7.2?
>>
>> 
>>Live update from RH9 -> CentOS-3.1 should work.  See
>>this page for details:
>>
> 
> http://www.webhostingtalk.com/showthread.php?s=&threadid=276534
> 
>>>I think I will try a Live Update on my test bench
>>
>>RH 9
>>
>>>system.
>>>
>>>As you pointed out before, there is no big rush. 
>>
>>On
>>
>>>the other hand, the value of this information
>>
>>dimishes
>>
>>>over time, as there is no point in making the
>>>information available after everyone on the planet
>>
>>has
>>
>>>upgraded from the RedHat versions to something
>>
>>else.  
>>True.
>>
>>>Looking at your migration page again made me
>>
>>realize
>>
>>>that the Live Update option is high risk. 
>>
>>Obviously,
>>
>>>someone who cares about they systems would choose
>>
>>Live
>>
>>>Update as a last choice.  Clean new install on
>>
>>extra
>>
>>>hardware seems to be the best way to go.
>>
>>Indeed, but I have some old boxes running 7.2 which
>>I have not got round 
>>to upgrading yet.  If the procedure was as easy as
>>running a single 
>>shell script I might be more inclined to update it.
>>
>>Did you look at my updated web page? (it was only
>>updated yesterday).  I 
>>have also started a diagram to show the distro
>>family tree.  Feedback is 
>>welcome.  You will need
>>http://www.gnome.org/projects/dia/ to view it.
>>
>>John.
>>
>>
>>>Thanks,
>>>
>>>Rick
>>>
>>>--- John Newbigin <jn at it.swin.edu.au> wrote:
>>>
>>>
>>>
>>>>Rick Graves wrote:
>>>>
>>>>
>>>>
>>>>>John,
>>>>>
>>>>>I did not hear back from you right away.  Maybe
>>>>
>>>>doing
>>>>
>>>>
>>>>>all the combinations is too big a job for one
>>>>
>>>>person. 
>>>>
>>>>
>>>>>It might work if we split them up.  
>>>>
>>>>Details of each procedure should be split up but
>>
>>we
>>
>>>>need somewhere to 
>>>>collect all the info.  I don't think we need to
>>
>>rush
>>
>>>>it.
>>>>
>>>>I started a web page to collect my ideas
>>>>
>>>
>>>
> http://uranus.it.swin.edu.au/~jn/linux/centos-2/migration.htm
> 
>>>>Obviously it is just a start.  I thinking a semi
>>>>intelligent 'wizard' 
>>>>where you select your current OS and either
>>>>acceptable upgrade methods 
>>>>OR target OS and it will spit out the procedure.
>>>>
>>>>Each procedure could have a forum where people can
>>>>contribute feedback, 
>>>>like they do with the php manual.
>>>>
>>>>I think a plan of attack is to collect information
>>>>while we wait for the 
>>>>new web site to appear.  Hopefully that will
>>>>minimize duplication of effort.
>>>>
>>>>
>>>>
>>>>
>>>>>I could do these two:
>>>>>
>>>>>RedHat 9   -> reinstall CentOS-3.1
>>>>>RedHat 9   -> live update to CentOS-3.1
>>>>
>>>>I think this will be a popular procedure so it
>>
>>would
>>
>>>>be good to have 
>>>>this well documented.  I know there is some
>>>>information on this already 
>>>>though I have not tried it out.
>>>>
>>>>Another thing I might have a play with is a family
>>>>tree.  That might 
>>>>help people see the differences between versions.
>>>>
>>>>John.
>>>>
>>>>
>>>>>I am volunteering for these because I already
>>
>>have
>>
>>>>>RedHat 9 and CentOS-3.1 CD's.  
>>>>>
>>>>>The only rub is on Saturday I go on vacation, and
>>>>
>>>>at
>>>>
>>>>
>>>>>the end of August I will be back to where I have
>>>>
>>>>my
>>>>
>>>>
>>>>>computer junk.  I could do those two in early
>>>>>September.  
>>>>>
>>>>>Any other volunteers for any of the other
>>>>>combinations?
>>>>>
>>>>>My offer to work it all into the web site still
>>>>>stands.
>>>>>
>>>>>Rick
>>>>>
>>>>>
>>>>>
>>>>>--- Rick Graves <gravesricharde at yahoo.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>Date: Thu, 12 Aug 2004 06:13:59 -0700 (PDT)
>>>>>>From: Rick Graves <gravesricharde at yahoo.com>
>>>>>>Subject: Re: migration center
>>>>>>To: centos at caosity.org
>>>>>>
>>>>>>John,
>>>>>>
>>>>>>Would you like to take a first crack at the text
>>>>
>>>>for
>>>>
>>>>
>>>>>>the migration center?  You could then run it by
>>>>
>>>>this
>>>>
>>>>
>>>>>>group.  
>>>>>>
>>>>>>If we get something that is good enough not to
>>
>>get
>>
>>>>>>shot down here, I will work it into the web
>>
>>site. 
>>
>>>>>>If we decide to go with separate sites, the text
>>>>>>could
>>>>>>just be copied over, so there would be no wasted
>>>>>>effort.  
>>>>>>
>>>>>>Rick
>>>>>>
>>>>>>--- centos-request at caosity.org wrote:
>>>>>>
>>>>>>Message: 8
>>>>>>Date: Thu, 12 Aug 2004 09:28:57 +1000
>>>>>>From: John Newbigin <jn at it.swin.edu.au>
>>>>>>To: centos at caosity.org
>>>>>>Subject: Re: [Centos] suggestions for CentOS
>>>>>>
>>>>>>
>>>>>>...
>>>>>>
>>>>>>I think another thing we should have is a
>>
> === message truncated ===
> 
> 
> 


-- 
John Newbigin - Computer Systems Officer
School of Information Technology
Swinburne University of Technology
Melbourne, Australia
http://www.it.swin.edu.au/staff/jnewbigin




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