[root@controller yum.repos.d]# yum makecache
openEuler-everything 0.0 B/s | 0 B 00:00
Errors during downloading metadata for repository ‘openEuler-everything’:
- Curl error (7): Couldn’t connect to server for http://repo.openeuler.org/openEuler-22.03-LTS/everything/x86_64/repodata/repomd.xml
Error: Failed to download metadata for repo ‘openEuler-everything’: Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
这个xml文件是存在的，为什么不能下载？