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在CentOS 7 i386上安装实时内核

tag-icon • tag-icon centos kernel real-time
在CentOS 7 i386上安装实时内核

我有一台计算机正在尝试安装实时内核。

我的操作系统：

# uname -a
Linux localhost.localdomain 3.10.0-1127.el7.centos.plus.i686 #1 SMP Sun Apr 5 18:08:31 UTC 2020 i686 i686 i386 GNU/Linux

我创建了/etc/yum.repos.d/CentOS-rt.repo包含以下内容的文件

# CentOS-rt.repo

[rt]
name=CentOS-7 - rt
baseurl=http://mirror.centos.org/centos/\$releasever/rt/\$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

当我尝试更新软件包时收到错误消息，请参阅下文

# yum update -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirror1.hs-esslingen.de
 * extras: mirror1.hs-esslingen.de
 * updates: mirror1.hs-esslingen.de
base                                                                                                                                                                                        | 3.6 kB  00:00:00     
extras                                                                                                                                                                                      | 2.9 kB  00:00:00     
http://mirror.centos.org/centos/7/rt/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Trying other mirror.
To address this issue please refer to the below wiki article 

https://wiki.centos.org/yum-errors

If above article doesn't help to resolve this issue please use https://bugs.centos.org/.



 One of the configured repositories failed (CentOS-7 - rt),
 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=rt ...

     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 rt
        or
            subscription-manager repos --disable=rt

     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=rt.skip_if_unavailable=true

failure: repodata/repomd.xml from rt: [Errno 256] No more mirrors to try.
http://mirror.centos.org/centos/7/rt/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found

我以前从未安装过内核。

请帮助我绕过上述错误。

谢谢。

答案1

看来实时内核仅在 AMD64/x86_64 架构上可用 - 你的是 i386（32 位）。可以从浏览器访问存储库 URL，因此如果您打开CentOS 7 实时内核或者Cern 上的 Centos 实时内核您只会看到 64 位支持。这也得到了证实Red Hat 的实时内核安装指南，第 9 页，仅支持 64 位。尽管 RHEL 7 是一个仅支持 32 位库的 64 位发行版，所以这并不奇怪。但我建议您阅读 Red Hat 的文档，它将帮助您了解实时内核的好处以及您是否确实需要它。

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