Chris Tooley wrote:
On 10-03-17 2:44 PM, Troy Dawson wrote:
Hi,
This question comes up every year or two. We haven't made it into a web
page because we don't want to make it look like we are trying to take
away RedHat's business.
Updating from RHEL5 to SL5 is easier than it is to update from RHEL4 to
SL4. This is because RHEL5 has yum, while RHEL4 is using up2date.
I *believe* the easiest way would be to change up2date to point to
scientific linux, and then use it to install yum and the first updates.
1 - Edit /etc/sysconfig/rhn/sources and comment out the line
up2date default
and add the lines
yum fermi-base
http://ftp1.scientificlinux.org/linux/scientific/4x/$ARCH/SL/RPMS/
yum fermi-errata
http://ftp1.scientificlinux.org/linux/scientific/4x/$ARCH/errata/SL/RPMS/
2 - Install yum using up2date
up2date install yum
up2date install yum-conf
3 - install sl-release using yum
yum install sl-release
4 - Update everything else
yum update
You may run into problems with this, but I currently don't have the
infrastructure to test this out, so I am not sure what problems you will
run into. But that is the general idea. Get yum on the system, then
update sl-release, and then update everything else.
Troy
For the most part, the above instructions worked perfectly - save for
up2date complaining about GPG signatures. I added --nosig and it worked
great (livin on the edge!).. How would I have installed the gpg signature?
Also, do you mind if I publish these instructions on the web? (I can
give credit, or not - depending upon what you prefer).. I know you don't
want it to look like you're trying to cannabalize RHEL but this helps
smaller vendors or university groups who don't have the resources for a
full RHEL support license.
Also, thank you kindly for all the work you do on SL!
Thanks,
~Chris
Which GPG signatures did they need?
We have our public GPG signatures available on www.scientificlinux.org,
so it might be possible to get them that way. Something like
rpm --import http://www.scientificlinux.org/documentation/gpg/RPM-GPG-KEY-sl
rpm --import
http://www.scientificlinux.org/documentation/gpg/RPM-GPG-KEY-dawson
If you want to put the instructions up on a web page, that it up to you.
I'd be surprised if there isn't already a web page or two about it.
But we won't put one up on the official web site.
Thanks reporting back.
Troy
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Troy Dawson [email protected] (630)840-6468
Fermilab ComputingDivision/LSCS/CSI/USS Group
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