原因是 IP被擋 部分的IP被內部禁止
禁止訪問其他網站
解決 換中華就OK
※ 引述《psinqoo (零度空間)》之銘言：
: 遇到問題如下:
: 有什麼方式 能解決??
: CENTOS 7
: 可以 PING
: One of the configured repositories failed (Unknown),
: and yum doesn't have enough cached data to continue. At this point the only
: safe thing yum can do is fail. There are a few ways to work "fix" this:
: 1. Contact the upstream for the repository and get them to fix the
: problem.
: 2. Reconfigure the baseurl/etc. for the repository, to point to a working
: upstream. This is most often useful if you are using a newer
: distribution release than is supported by the repository (and the
: packages for the previous distribution release still work).
: 3. Disable the repository, so yum won't use it by default. Yum will then
: just ignore the repository until you permanently enable it again or
: use
: --enablerepo for temporary usage:
: yum-config-manager --disable <repoid>
: 4. Configure the failing repository to be skipped, if it is unavailable.
: Note that yum will try to contact the repo. when it runs most
: commands,
: so will have to try and fail each time (and thus. yum will be be much
: slower). If it is a very temporary problem though, this is often a
: nice
: compromise:
: yum-config-manager --save
: --setopt=<repoid>.skip_if_unavailable=true
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※ 編輯: psinqoo (61.220.43.131), 09/14/2015 17:00:43