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Linux: After upgrading from CentOS 4.7 to CentOS 5.2, yum no longer works
Problem:
$ yum update Loading "priorities" plugin Plugin "fastestmirror" uses deprecated constant TYPE_INTERFACE. Please use TYPE_INTERACTIVE instead. Loading "fastestmirror" plugin Determining fastest mirrors Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.main(sys.argv[1:]) File "/usr/share/yum-cli/yummain.py", line 105, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 289, in doCommands self._getTs() File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 85, in _getTs self._getTsInfo() File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 91, in _getTsInfo self._tsInfo.setDatabases(self.rpmdb, self.pkgSack) File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 537, in pkgSack = property(fget=lambda self: self._getSacks(), File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 392, in _getSacks self.repos.populateSack(which=repos) File "/usr/lib/python2.4/site-packages/yum/repos.py", line 214, in populateSack self.doSetup() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 66, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 169, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 78, in postreposetup_hook repo.set('urls', repomirrors[str(repo)]) AttributeError: 'YumRepository' object has no attribute 'set'
 
Solution:
The plugin "yum-plugin-fastestmirror" is incompatible with the yum that ships with CentOS 5. Remove and replace with the new "yum-fastestmirror" package:

$ yum --noplugins update yum
$ rpm -e yum-plugin-fastestmirror
$ yum install yum-fastestmirror

 
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