yum 故障 File "/usr/lib64/python2.6/threading.py", line 474, in start
在centos 6.4下需要做一次更新，结果遇到错误
[root@Oracle log1]# yum update
Loaded plugins: fastestmirror, refresh-packagekit, securityLoading mirror speeds from cached hostfile
Traceback (most recent call last):
File "/usr/bin/yum", line 29, in <module>
yummain.user_main(sys.argv[1:], exit_code=True)
File "/usr/share/yum-cli/yummain.py", line 285, in user_main
errcode = main(args)
File "/usr/share/yum-cli/yummain.py", line 136, in main
result, resultmsgs = base.doCommands()
File "/usr/share/yum-cli/cli.py", line 434, in doCommands
self._getTs(needTsRemove)
File "/usr/lib/python2.6/site-packages/yum/depsolve.py", line 99, in _getTs
self._getTsInfo(remove_only)
File "/usr/lib/python2.6/site-packages/yum/depsolve.py", line 110, in _getTsInfo
pkgSack = self.pkgSack
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 887, in <lambda>
pkgSack = property(fget=lambda self: self._getSacks(),
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 669, in _getSacks
self.repos.populateSack(which=repos)
File "/usr/lib/python2.6/site-packages/yum/repos.py", line 279, in populateSack
self.doSetup()
File "/usr/lib/python2.6/site-packages/yum/repos.py", line 105, in doSetup
self.ayum.plugins.run('postreposetup')
File "/usr/lib/python2.6/site-packages/yum/plugins.py", line 184, in run
func(conduitcls(self, self.base, conf, **kwargs))
File "/usr/lib/yum-plugins/fastestmirror.py", line 202, in postreposetup_hook
all_urls = FastestMirror(all_urls).get_mirrorlist()
File "/usr/lib/yum-plugins/fastestmirror.py", line 369, in get_mirrorlist
self._poll_mirrors()
File "/usr/lib/yum-plugins/fastestmirror.py", line 413, in _poll_mirrors
pollThread.start()
File "/usr/lib64/python2.6/threading.py", line 474, in start
_start_new_thread(self.__bootstrap, ())
thread.error: can't start new thread
[root@Oracle log1]#
经过google,得到解答
修改 /etc/yum/pluginconf.d/fastestmirror.conf
将enabled=1改为enabled=0
原因：yum的fastestmirror这个插件出错了，fastestmirror是为了让yum在找镜像下载之前，根据ping的值进行判断，从而选择更好的下载源。