openEuler
openEuler-21.09-everything-x86_64-dvd.iso
sudo yum update error

EPOL
Errors during downloading metadata for repository 'EPOL':
	-Status code: 404 for htpp://repo.openeuler.org/openEuler-21.09/EPOL/repomd.xml

Please note that:

sudo vi/etc/yum.rest.d/openeuler.repo

Please note that

[EPOL]
name=EPOL
baseurl=http://repo.openeuler.org/openEuler-21.09/EPOL/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://repo.openeuler.org/openEuler-21.09/OS/$basearch/RPM-GPG-KEY-openEuler

The correct address is:

name=EPOL
baseurl= http://repo.openeuler.org/openEuler-21.09/EPOL/main/ $basearch/

Save, exit and execute again.