yum clean :无法在RHEL 7上使用yum

Question

我遇到了一个yum的安装问题，它找不到php的镜像。因此我表演了

yum clean all

当我再次尝试安装时，它给出了以下错误。

不知道该怎么做。我正在RHEL 7上工作。

Loaded plugins: product-id, search-disabled-repos, subscription-manager
file:///mnt/repodata/repomd.xml: [Errno 14] curl#37 - "Couldn't open file /mnt/repodata/repomd.xml"
Trying other mirror.


 One of the configured repositories failed (Red Hat Enterprise Linux 7.6),
 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. Run the command with the repository temporarily disabled
            yum --disablerepo=InstallMedia ...

     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 InstallMedia
        or
            subscription-manager repos --disable=InstallMedia

     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=InstallMedia.skip_if_unavailable=true

failure: repodata/repomd.xml from InstallMedia: [Errno 256] No more mirrors to try.
file:///mnt/repodata/repomd.xml: [Errno 14] curl#37 - "Couldn't open file /mnt/repodata/repomd.xml"

如何让它再次工作？

Answer 1

看起来您配置了一个不再存在的存储库。

存储库将在/etc/yum.repos.d/中的文件中配置，或者直接在/etc/yum.conf中配置。在这两个位置中查找以前位于/mnt下的存储库

如果您禁用或删除了缺少的存储库，‘yum clean all’应该会再次起作用。

我的假设是，在某个时刻，您使用安装介质上的repo安装了一些软件包，并且安装介质不再被挂载。

如果您想再次使用安装介质，则需要在安装它的确切路径上重新安装它。即/mnt

如果yum-config-manager是作为列出和禁用repos的另一种方式安装的，那么您可能还想查看它的手册页。