linux - 在Centos 7上安装EPEL存储库会破坏yum功能吗？

因此，我尝试设置ssh堡垒服务器，但是在设置EPEL以便安装Python3.6时遇到问题。

我正在使用CentOS Linux release 7.4.1708 (Core)
因此，我尝试先使用安装 EPEL sudo yum -y install epel-release(我之前当然也做过sudo yum -y update，但效果很好)，但它告诉我 Package 'epel-release' not found

因此，我尝试了使用 RedHat Package Manager 的不同方法:
sudo rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
这将成功安装软件包，并且我可以在epel.repo中看到epel-testing.repo和etc/yum.repos.d(我在发布末尾复制了它们的包含内容)

但是，现在，无论何时我尝试对yum进行操作，无论是更新还是安装某些软件包，它都会给我以下错误(例如，我使用yum -y install Python3.6或尝试安装 tsclient 或 python-pip ) :

[root@scw-39016b yum.repos.d]# yum install -y Python3.6
Loaded plugins: fastestmirror
base                                                     | 3.6 kB     00:00
centos-kernel                                            | 2.9 kB     00:00
epel/armhfp/metalink                                     |  42 kB     00:00
Could not parse metalink https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=armhfp error was
No repomd file


 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. 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

File /var/cache/yum/armhfp/7/epel/metalink.xml does not exist

我已经尝试了数百万种方法来解决这个问题，但似乎无济于事:(

我将其重新安装了5次，完成了sudo yum clean all，尝试在存储库文件中以其他方式取消对baseurl的注释以及对metalink的注释，等等。但是，没有任何帮助:(

有人可以让我知道这是什么原因导致此错误吗？

我在某处读到它可能与启用/禁用某些存储库有关，但我不知道如何应对。

非常感谢 !!!

epel.repo

[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

[epel-debuginfo]
name=Extra Packages for Enterprise Linux 7 - $basearch - Debug
baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch/debug
metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-debug-7&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=1

[epel-source]
name=Extra Packages for Enterprise Linux 7 - $basearch - Source
baseurl=http://download.fedoraproject.org/pub/epel/7/SRPMS
metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-source-7&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=1

epel-testing.repo

[epel-testing]
name=Extra Packages for Enterprise Linux 7 - Testing - $basearch
baseurl=http://download.fedoraproject.org/pub/epel/testing/7/$basearch
metalink=https://mirrors.fedoraproject.org/metalink?repo=testing-epel7&arch=$basearch
failovermethod=priority
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

[epel-testing-debuginfo]
name=Extra Packages for Enterprise Linux 7 - Testing - $basearch - Debug
baseurl=http://download.fedoraproject.org/pub/epel/testing/7/$basearch/debug
metalink=https://mirrors.fedoraproject.org/metalink?repo=testing-debug-epel7&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=1

[epel-testing-source]
name=Extra Packages for Enterprise Linux 7 - Testing - $basearch - Source
baseurl=http://download.fedoraproject.org/pub/epel/testing/7/SRPMS
metalink=https://mirrors.fedoraproject.org/metalink?repo=testing-source-epel7&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=1

最佳答案

我们通过更新curl来解决此问题。我相信yum在幕后使用libcurl，并且似乎较旧的curl版本无法协商到epel存储库的TLS连接。

yum update curl --disablerepo=epel

关于linux - 在Centos 7上安装EPEL存储库会破坏yum功能吗？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/48320850/