RHEL5.5 Migrate to centos5.5, some RH remnants, questions
Posted: 2010/12/21 14:43:18
I have run into two issues with a migration to centos. I did read the FAQ's and tried
various searches to the fora but did not find solutions to these issues. Perhaps it is
my failure of familiarity with the centos site.
I am not a true sysadmin but I am somewhat familiar with RHEL and daily work
with it, primarily installing and maintaining 3rd party software packages
I have a single server on a Dell Poweredge 840 that was up to date with Red Hat.
I did a migration from RHEL5.5 to centos 5.5 following the instructions I found at
[code]
http://wiki.centos.org/HowTos/MigrationGuide
and
http://www.unixmen.com/linux-tutorials/documentations-a-howto/213-how-to-jul-convert-rhel-5-to-centos-5
[/code]
Specifically I did the following:
- created a dd disk image and set it aside as a fail backup disk
As root in the root home:
mkdir centos
cd centos
yum clean all
At this point I tried to do the wget type things described int the
by-hand instructions but they kept
failing with errors about not finding the files or unknown errors.
So instead I opened a browser and went to
http://mirror.centos.org/centos/5.5/os/i386/
I located below that
RPM-GPG-KEY-CentOS-5
and saved it locally to the centos dir off root homw.
Then I switched to
http://mirror.centos.org/centos/5.5/os/i386/CentOS/
and saved off locally
centos-release-5-5.el5.centos.1.i386.rpm
centos-release-notes-5.5-0.i386.rpm
yum-3.2.22-26.el5.centos.noarch.rpm
yum-updatesd-0.9-2.el5.noarch.rpm
Later there were dependencies so I had to also download
yum-fastestmirror-1.1.16-14.el5.centos.1.noarch.rpm
Then I continued with stuff from the web page info
http://wiki.centos.org/HowTos/MigrationGuide
cp /etc/redhat-release /etc/redhat-release-saved
rpm -e --nodeps redhat-release-notes redhat-release yum-rhn-plugin redhat-logos
[NOTE: It turned out that the logos are needed for the login screen so maybe
don't include those in the future. see questions below.]
I switched back to the by-hand guide
http://www.unixmen.com/linux-tutorials/documentations-a-howto/213-how-to-jul-convert-rhel-5-to-centos-5
and did
rpm ?import RPM-GPG-KEY-CentOS-5
rpm -Uvh *.rpm [note: the guide said to use -force but that is a bad option now.]
yum update
yum upgrade
reboot
I am seeing two main issues of remaining RHEL type files/programs, and one general question
1) As mentioned above, removal of the RH themes made the login screen throw an error(s)
complaining that it could not find various of the .png file in /usr/share/gdm/themes/RHEL/...
and then fail to the simple default login screen.
As a stop-gap I just copied these back in from another RHEL5 machine. I would have expeceted
that a migration would include replacement of the RH theme with a centos one of some sort.
Please advise as to how I get in some sort of centos theme for the login and in general to
replace the "shadow man" type page logos. If this is available as a web page please point
that out
2) I am now seeing in my daily log report from Logwatch 7.3 (03/24/06) up2date failures of the
form
--------------------- up2date Begin ------------------------
**Unmatched Entries**
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
---------------------- up2date End -------------------------
I am assuming here that this is some yum RPM auto-update that is being implemented somewhere and
it is still trying to go out to my RH account which now has expired entitlements. Perhaps it is something
else, I am not knowledgeable enough with this to know. Any suggestions as to how to locate this updater
and make it access centos for updates appreciated.
Last of all, I did this migration on Friday Dec. 17th. I have since off and on tried to run
yum update
but it never finds any packages marked for update.
> yum update
Setting up Update Process
No Packages marked for Update
With RHEL it seemed that there were several a week, often more. So I wonder if perhaps yum appears
to be working but actually is not. And advice at to how to verify the operation of yum appreciated.
Many thanks in advance for any help provided,
Alan D.
various searches to the fora but did not find solutions to these issues. Perhaps it is
my failure of familiarity with the centos site.
I am not a true sysadmin but I am somewhat familiar with RHEL and daily work
with it, primarily installing and maintaining 3rd party software packages
I have a single server on a Dell Poweredge 840 that was up to date with Red Hat.
I did a migration from RHEL5.5 to centos 5.5 following the instructions I found at
[code]
http://wiki.centos.org/HowTos/MigrationGuide
and
http://www.unixmen.com/linux-tutorials/documentations-a-howto/213-how-to-jul-convert-rhel-5-to-centos-5
[/code]
Specifically I did the following:
- created a dd disk image and set it aside as a fail backup disk
As root in the root home:
mkdir centos
cd centos
yum clean all
At this point I tried to do the wget type things described int the
by-hand instructions but they kept
failing with errors about not finding the files or unknown errors.
So instead I opened a browser and went to
http://mirror.centos.org/centos/5.5/os/i386/
I located below that
RPM-GPG-KEY-CentOS-5
and saved it locally to the centos dir off root homw.
Then I switched to
http://mirror.centos.org/centos/5.5/os/i386/CentOS/
and saved off locally
centos-release-5-5.el5.centos.1.i386.rpm
centos-release-notes-5.5-0.i386.rpm
yum-3.2.22-26.el5.centos.noarch.rpm
yum-updatesd-0.9-2.el5.noarch.rpm
Later there were dependencies so I had to also download
yum-fastestmirror-1.1.16-14.el5.centos.1.noarch.rpm
Then I continued with stuff from the web page info
http://wiki.centos.org/HowTos/MigrationGuide
cp /etc/redhat-release /etc/redhat-release-saved
rpm -e --nodeps redhat-release-notes redhat-release yum-rhn-plugin redhat-logos
[NOTE: It turned out that the logos are needed for the login screen so maybe
don't include those in the future. see questions below.]
I switched back to the by-hand guide
http://www.unixmen.com/linux-tutorials/documentations-a-howto/213-how-to-jul-convert-rhel-5-to-centos-5
and did
rpm ?import RPM-GPG-KEY-CentOS-5
rpm -Uvh *.rpm [note: the guide said to use -force but that is a bad option now.]
yum update
yum upgrade
reboot
I am seeing two main issues of remaining RHEL type files/programs, and one general question
1) As mentioned above, removal of the RH themes made the login screen throw an error(s)
complaining that it could not find various of the .png file in /usr/share/gdm/themes/RHEL/...
and then fail to the simple default login screen.
As a stop-gap I just copied these back in from another RHEL5 machine. I would have expeceted
that a migration would include replacement of the RH theme with a centos one of some sort.
Please advise as to how I get in some sort of centos theme for the login and in general to
replace the "shadow man" type page logos. If this is available as a web page please point
that out
2) I am now seeing in my daily log report from Logwatch 7.3 (03/24/06) up2date failures of the
form
--------------------- up2date Begin ------------------------
**Unmatched Entries**
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
RPM error. The message was:
---------------------- up2date End -------------------------
I am assuming here that this is some yum RPM auto-update that is being implemented somewhere and
it is still trying to go out to my RH account which now has expired entitlements. Perhaps it is something
else, I am not knowledgeable enough with this to know. Any suggestions as to how to locate this updater
and make it access centos for updates appreciated.
Last of all, I did this migration on Friday Dec. 17th. I have since off and on tried to run
yum update
but it never finds any packages marked for update.
> yum update
Setting up Update Process
No Packages marked for Update
With RHEL it seemed that there were several a week, often more. So I wonder if perhaps yum appears
to be working but actually is not. And advice at to how to verify the operation of yum appreciated.
Many thanks in advance for any help provided,
Alan D.