centos not update，centos 7.8（2003）

Question

 dnf -y upgrade http://mirror.bytemark.co.uk/centos/8/BaseOS/x86_64/os/Packages/centos-release-8.1-1.1911.0.8.el8.x86_64.rpm
Last metadata expiration check: 0:35:45 ago on Tue May 12 20:59:10 2020.
centos-release-8.1-1.1911.0.8.el8.x86_64.rpm     55 kB/s |  21 kB     00:00    
Dependencies resolved.

 Problem: cannot install the best update candidate for package centos-release-7-8.2003.0.el7.centos.x86_64
  - nothing provides centos-gpg-keys = 8.1-1.1911.0.8.el8 needed by centos-release-8.1-1.1911.0.8.el8.x86_64
  - nothing provides centos-repos = 8.1-1.1911.0.8.el8 needed by centos-release-8.1-1.1911.0.8.el8.x86_64
================================================================================
 Package            Arch       Version                   Repository        Size
================================================================================
Skipping packages with broken dependencies:
 centos-release     x86_64     8.1-1.1911.0.8.el8        @commandline      21 k

Transaction Summary
================================================================================
Skip  1 Package

Nothing to do.
Complete!

我想更新centos 7.8，我无法获得帮助。首先是7.2版，我升级到7.8

Answer 1

是，gpg也需要提交给下载。

尝试一下：

dnf安装http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/ {centos-release-8.1-1.1911.0.9.el8.x86_64.rpm，centos-gpg-keys-8.1-1.1911.0.9.el8.noarch.rpm，centos-repos-8.1-1.1911。 0.9.el8.x86_64.rpm}（应该是最新版本）

Answer 2

发布日期对应于发布日期，此刻为最新版本，问题出在内核中，尝试在OpenVz上安装，centos不起作用不支持打开。谢谢你。