# 三丰云”免费虚拟主机免费云服务器yum出错

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One of the configured repositories failed (未知),
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


Cannot retrieve metalink for repository: epel/x86_64. Please verify its path and try again

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1、云服务器可支持弹性扩展，按需付费，而虚拟主机不支持2、云服务器需要手动配置环境，虚拟主机无须配置环境3、云服务器是独享资源，虚拟主机的资源是共享的4、云服务器可远程桌面进行管理，虚拟主机只能采用ftp进行管理虚拟主机、云服务器的操作区别（1）供应和部署时间虚拟主机——数天至数周云服务器——即时，...
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