HowTos/MigrationGuide/ServerCD 4.4 to 5 - CentOS Wiki

http://wiki.centos.org/HowTos/MigrationGuide/ServerCD_4.4_to_5

NOTE:

This is not a supported upgrade path !

 The Server CD series mentioned here does not exist in all CentOS releases, nor in each point level respin. The CentOS team strives to permit minimal installs with just CD 1 of a given series, but this is not always possible. Please check the Release Notes for a given Major and Point release for further details.

 You have to force an install of python-sqlite from the CentOS 5 repositories after the upgrade, as the version number of python-sqlite didn't change between 4 and 5.

rpm -Uvh --replacepkgs python-sqlite-1.1.7-1.2.1.i386.rpm  

Otherwhise you'll get the error

 Could not find any working storages  

or

There was a problem importing one of the Python modules  required to run yum. The error leading to this problem was:       No module named sqlite    Please install a package which provides this module, or  verify that the module is installed correctly.    It's possible that the above module doesn't match the  current version of Python, which is:  2.4.3 (#1, Mar  5 2011, 21:25:56)                      [GCC 4.1.2 20080704 (Red Hat 4.1.2-50)]                  If you cannot solve this problem yourself, please go to  the yum faq at:    http://wiki.linux.duke.edu/YumFaq                         

Always have a current backup of you data !

This is a "general" guideline for a CentOS 4.4 Server CD install upgrade via yum.

YMMV with additionally installed RPMS and RPMS from third party Repositories.

I did a fresh install of the x86_64 Server 4.4 CD (everything) for this migration test.

Now that I have a CentOS 4.4 install, I will begin the migration to CentOS 5 via yum.

Start the upgrade process

mkdir /tmp/Upgrades  cd /tmp  

Check for centos-yumconf

 rpm -qi centos-yumconf  

* If centos-yumconf exist, remove it.

* NOTE this seems to be only installed if you installed from the x86_64 version of the ServerCD 4.4 ISO.

rpm -e centos-yumconf  

Installing needed RPMS manually

I used wget to acquire the RPMS.

Install centos-release-5-0.0.el5.centos.2.x86_64.rpm centos-release-notes-5.0.0-2.x86_64.rpm

rpm -Uvh centos-release-5-0.0.el5.centos.2.x86_64.rpm centos-release-notes-5.0.0-2.x86_64.rpm  

# Make sure you disable all other repos and only have CentOS Base and Updates repositories enabled.

Install the CentOS 5 GPG Key

# Get the GPG key from a mirror or CentOS 5 media.

rpm --import http://mirrors.kernel.org/centos/RPM-GPG-KEY-CentOS-5  

cd /tmp/Upgrades  

Download the following RPMS

# This gets the new yum/rpm working.

• rpm-libs-4.4.2-37.el5.x86_64.rpm
• rpm-4.4.2-37.el5.x86_64.rpm
• yum-3.0.5-1.el5.centos.2.noarch.rpm
• rpm-python-4.4.2-37.el5.x86_64.rpm
• popt-1.10.2-37.el5.x86_64.rpm
• glibc-2.5-12.x86_64.rpm
• glibc-common-2.5-12.x86_64.rpm
• beecrypt-4.1.2-10.1.1.x86_64.rpm
• glibc-headers-2.5-12.x86_64.rpm
• glibc-devel-2.5-12.x86_64.rpm
• binutils-2.17.50.0.6-2.el5.x86_64.rpm
• elfutils-libelf-0.125-3.el5.x86_64.rpm
• elfutils-0.125-3.el5.x86_64.rpm
• elfutils-libs-0.125-3.el5.x86_64.rpm
• beecrypt-python-4.1.2-10.1.1.x86_64.rpm
• python-2.4.3-19.el5.x86_64.rpm
• python-devel-2.4.3-19.el5.x86_64.rpm
• python-elementtree-1.2.6-5.x86_64.rpm
• python-sqlite-1.1.7-1.2.1.x86_64.rpm
• python-urlgrabber-3.1.0-2.noarch.rpm
• neon-0.25.5-5.1.x86_64.rpm
• libxml2-2.6.26-2.1.2.x86_64.rpm
• libxml2-python-2.6.26-2.1.2.x86_64.rpm
• db4-4.3.29-9.fc6.x86_64.rpm
• libselinux-1.33.4-2.el5.x86_64.rpm
• libsepol-1.15.2-1.el5.x86_64.rpm
• mcstrans-0.1.10-1.el5.x86_64.rpm
• m2crypto-0.16-6.el5.1.x86_64.rpm
• krb5-libs-1.5-17.x86_64.rpm
• openssl-0.9.8b-8.3.el5.x86_64.rpm
• readline-5.1-1.1.x86_64.rpm

# Install above RPMS

rpm -Uvh *.rpm --nodeps  

# Clean and rebuild rpmdb for CentoS 5

rm -f /var/lib/rpm/__*  rpm --rebuilddb  

# Clean yum files

yum clean all  

# Remove deps/outdated packages

Note: You can run yum upgrade to help find deps that you need to remove.

rpm -e VFlib2 caching-nameserver autofs kudzu pcmcia-cs xorg-x11 newt-perl hal crypto-utils --nodeps  

Install new CentOS 5 kernel

# If you are getting the new kernel via wget you need to do the following first.

yum upgrade wget  

rpm -ivh kernel-2.6.18-8.el5.x86_64.rpm --nodeps  

Remove old CentOS 4 kernel(s)

rpm -qa | grep kernel  

remove 2.6.9 bits

rpm -e kernel-2.6.9-42.EL kernel-devel-2.6.9-42.EL kernel-doc-2.6.9-42.EL  

Upgrade the system to CentOS 5

yum upgrade  

# Install removed packages that were not reinstalled

yum install caching-nameserver autofs  

• cd /tmp

# Generate list of RPMS on the system after upgrade to see what old RPMS are left

rpm -qa >Upgrade_RPM_List  

# Reboot system

reboot  

# Login and you should be on CentOS 5

uname -a  

• Linux localhost.localdomain 2.6.18-8.1.1.el5 #1 SMP Mon Apr 9 09:43:24 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux

At this point you will need to start upgrading any extra/third party RPMS.

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