Sounds like your yum is corrupted, or you replaced your python.
  rpm -qa | grep yum | sort
  rpm -V yum

Troy

Takashi Ichihara wrote:
>  Hi
> 
> Recently, yum on SL5.3 (X86_64)
> # uname -a
> Linux abc.riken.jp 2.6.18-128.1.10.el5 #1 SMP Thu May 7 12:48:13 EDT
> 2009 x86_64 x86_64 x86_64 GNU/Linux
> 
> yum update fails with KeyError: 'unknown header tag'.
> Done anyone know how to solve this problem ?
> 
> Thank you for the information.
> 
> Takashi Ichihara
> 
> # yum update
> 
> :
> Transaction Summary
> ================================================================================
> Install 5 Package(s)
> Update 46 Package(s)
> Remove 3 Package(s)
> 
> Total size: 180 M
> Is this ok [y/N]: y
> Downloading Packages:
> Running rpm_check_debug
> Traceback (most recent call last):
> File "/usr/bin/yum", line 29, in ?
> yummain.user_main(sys.argv[1:], exit_code=True)
> File "/usr/share/yum-cli/yummain.py", line 229, in user_main
> errcode = main(args)
> File "/usr/share/yum-cli/yummain.py", line 181, in main
> return_code = base.doTransaction()
> File "/usr/share/yum-cli/cli.py", line 405, in doTransaction
> msgs = self._run_rpm_check_debug()
> File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 3193, in
> _run_rpm_check_debug
> self.populateTs(test=1)
> File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 261, in
> populateTs
> self.ts.addErase(txmbr.po.idx)
> File "/usr/lib/python2.4/site-packages/yum/packages.py", line 1046, in
> __getattr__
> return self.hdr[thing]
> KeyError: 'unknown header tag'
> #


-- 
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Troy Dawson  [log in to unmask]  (630)840-6468
Fermilab  ComputingDivision/LCSI/CSI LMSS Group
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