yum 没有足够的缓存数据来继续

yum 没有足够的缓存数据来继续

我正在尝试在 Centos7 上安装 sudo。

我确实是这样的:

su -
yum install sudo

我明白了:

Loading mirror speeds from cached hostfile

无法检索镜像列表http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=container错误为 14:curl#6 - “无法解析主机:mirrorlist.centos.org;未知错误”

配置的存储库之一失败(未知),并且 yum 没有足够的缓存数据来继续。此时 yum 能做的唯一安全的事情就是失败。有几种方法可以“修复”这个问题:

 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. Run the command with the repository temporarily disabled
        yum --disablerepo=<repoid> ...

 4. Disable the repository permanently, 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>
    or
        subscription-manager repos --disable=<repoid>

 5. 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

找不到存储库的有效基本 URL:base/7/x86_64

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