repos.md

Referencing Guidance

https://www.cnblogs.com/2021-sue-888/p/14767120.html

Error Msg

Errors during downloading metadata for repository 'kubernetes':
  - Status code: 404 for https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el8-x86_64/repodata/repomd.xml (IP: 119.96.66.248)
Error: Failed to download metadata for repo 'kubernetes': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

Analysis

Actually, the problem came from the source itself. It seems that mirrors.aliyun.com only provides up to el7 of kubernetes instead of el8 as indicated from the source.

vi /etc/yum.repos.d/kubernetes.repo

Then change key baseurl.

Problem 2

Reset /etc/yum.repos.d

I was overwhelmed by the amount of repo files. Message "Repository ** is listed more than once in the configuration" is keep poping out. So I decided to roll the repos all the way back to their original state.

cd /etc/yum.repos.d
rm -f *

Get CentOS-8.repo from http://mirrors.aliyun.com/repo/. Create kubernetes.repo. Then write following code in it.

[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

After that, you're good to go.