RHEL3 Upgrade to RHEL4 Breaks up2date

Last week I had to upgrade one of our old RHEL3 servers in order to get it to address disks larger than 2TB. I did the upgrade from CD, and it went fairly smoothly, except up2date would not run after the box came back up.

It gave me the following error:

[root@x up2date]# Traceback (most recent call last):
  File "/usr/sbin/up2date", line 27, in ?
    from up2date_client import repoDirector
  File "/usr/share/rhn/up2date_client/repoDirector.py", line 5, in ?
    import rhnChannel
  File "/usr/share/rhn/up2date_client/rhnChannel.py", line 10, in ?
    import up2dateAuth
  File "/usr/share/rhn/up2date_client/up2dateAuth.py", line 5, in ?
    import rpcServer
  File "/usr/share/rhn/up2date_client/rpcServer.py", line 23, in ?
    from rhn import rpclib
ImportError: No module named rhn

It turns out that there is no “really easy” way to fix it, but these directions on spaceblog do work. Basically it involves removing a lot of packages and re-adding them. The problem is related to python, so rather than remove the entire list of packages, I focused only on those relating to python and up2date:


libxml2-python
popt
pyOpenSSL
python
rhnlib
rhpl
up2date

Make sure not to remove these packages:


rpm
rpm-libs
rpm-python

Or you will break rpm and not be able to add the packages back after you remove them. All told, this is a grisly process, and you will have to use rpm -e --nodeps in order to get it done. This sucks, but up2date will work everything out once you can get it running again.

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