[轉載]CentOS中yum-fastmirror外掛程式出錯

錯誤碼：

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
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 309, in user_main errcode = main(args)
File “/usr/share/yum-cli/yummain.py”, line 178, in main result, resultmsgs = base.doCommands()
File “/usr/share/yum-cli/cli.py”, line 345, in doCommands self._getTs(needTsRemove)
File “/usr/lib/python2.4/site-packages/yum/depsolve.py”, line 101, in _getTsself._getTsInfo(remove_only)
File “/usr/lib/python2.4/site-packages/yum/depsolve.py”, line 112, in _getTsInfopkgSack = self.pkgSack
File “/usr/lib/python2.4/site-packages/yum/__init__.py”, line 661, in pkgSack = property(fget=lambda self: self._getSacks(),
File “/usr/lib/python2.4/site-packages/yum/__init__.py”, line 501, in _getSacksself.repos.populateSack(which=repos)
File “/usr/lib/python2.4/site-packages/yum/repos.py”, line 232, in populateSackself.doSetup()
File “/usr/lib/python2.4/site-packages/yum/repos.py”, line 79, in doSetupself.ayum.plugins.run(‘postreposetup’)
File “/usr/lib/python2.4/site-packages/yum/plugins.py”, line 179, in runfunc(conduitcls(self, self.base, conf, **kwargs))
File “/usr/lib/yum-plugins/fastestmirror.py”, line 181, in postreposetup_hookall_urls = FastestMirror(all_urls).get_mirrorlist()
File “/usr/lib/yum-plugins/fastestmirror.py”, line 333, in get_mirrorlistself._poll_mirrors()
File “/usr/lib/yum-plugins/fastestmirror.py”, line 376, in _poll_mirrorspollThread.start()
File “/usr/lib/python2.4/threading.py”, line 416, in start_start_new_thread(self.__bootstrap, ())
thread.error: can’t start new thread

網上的解決方案是：

yum clean all
rm -f /var/lib/rpm/__db*
rpm –rebuilddb
yum update

試了試不行，乾脆把fastestmirror禁掉解決了：
vi /etc/yum/pluginconf.d/fastestmirror.conf
enabled=1改成0

修改fastestmirror.conf的 maxthreads 值沒試。

附上fastestmirror外掛程式介紹：
使用yum可以簡化系統軟體更新的工作。為了保證更新的持續進行，通常都會提供多個mirror（鏡像）地址供下載使用，但由於存在地區問題，從不同的鏡
像下載速度差異很大。選擇從適合的鏡像下載軟體包，會極大的影響更新速度。以CentOS為例，可使用一個叫fastestmirror的外掛程式，讓yum
在更新時先根據ping值進行判斷，然後從最快響應的地址下載。

UPDATE1：網上找到的問題原因。解決辦法和上面的類似。

Basically this issue is rare to see, it’s a memory resource issue with the vps which is caused by yum’s fastestmirror plugin. This issue can be repeated when the following two conditions are met:

1, You’re running VPS, for example in an OpenVZ virtual server.
2, There’s a mysql instance running in this vritual server already.

This is a reported bug which had been fixed two months ago.

As we know the exactly reason for this error, there’re two ways to bypass it:
1, Stop the mysql instance and run yum again.
2, Disable yum’s fastestmirror plugin when start yum, like this:

Code:

yum --disableplugin=fastestmirror update