[CentOS] can NOT update CENTOS use YUM

[Johnny Hughes]

mcclnx mcc wrote:
> That is NOT true.  I have been tried like www.sun.com and www.oracle.com and it work fine.
> 
> --- 09/8/10 (一)，Ross Walker <rswwalker at gmail.com> 寫道：
> 
>> 寄件者: Ross Walker <rswwalker at gmail.com>
>> 主旨: Re: [CentOS] can NOT update CENTOS use YUM
>> 收件者: "CentOS mailing list" <centos at centos.org>
>> 副本: "CentOS mailing list" <centos at centos.org>
>> 日期: 2009年8月10日,一,上午9:26
>>
>> On Aug 10, 2009, at 8:56 AM, mcclnx mcc <mcclnx at yahoo.com.tw>
>> wrote:
>>
>>> I have No problem to use following comma nd:
>>>
>>> # wget -O - --progress=dot "http://mirrorlist.centos.org/?release=5&arch=i386&repo=os
>>> "
>>> --08:55:27--  http://mirrorlist.centos.org/? 
>>> release=5&arch=i386&repo=os
>>> Resolving mirrorlist.centos.org... 204.15.73.243,
>> 72.232.223.58
>>> Connecting to
>> mirrorlist.centos.org|204.15.73.243|:80... connected.
>>> HTTP request sent, awaiting response... 200 OK
>>> Length: unspecified [text/plain]
>>> Saving to: `STDOUT'
>> Maybe your firewall/proxy allows connections to
>> *.centos.org, but not  
>> to the rest of the world?
>>
>> -Ross

If you can't retrieve this (mirrorlist
http://mirrorlist.centos.org/?release=5&arch=i386&repo=os) via yum, but
you can via wget on the same machine get the same list ... then that is
very strange.

It is possible that you can see one of the mirrorlist machines and not
the other one.

I can see "tw" based lists are being generated OK.

All the things I can think of that might cause that are related to using
a different YUM than the one in CentOS, or a broken yum (so maybe
reinstall it by hand), or maybe a "transparent proxy" (where yum
sometimes breaks).

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