CentOS 8 – How to Resolve Warning: Failed Loading ‘/etc/yum.repos.d/CentOS-AppStream.repo’

centoscentos8

Trying to update my CentOS Linux 8 stack before upgrade to Stream

CentOS Linux 8

[root@den yum.repos.d]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="8 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Linux 8 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-8"
CENTOS_MANTISBT_PROJECT_VERSION="8"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="8"

[root@den yum.repos.d]# uname -r
4.18.0-147.5.1.el8_1.x86_64

Fix for Failed to download metadata for repo ‘AppStream’

sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

Errors during downloading metadata for repository 'extras'

YUM

yum clean all
yum update -y
yum check-update

yum update -y

NOTE the WARNING Warning: failed loading '/etc/yum.repos.d/CentOS-AppStream.repo', skipping.

Warning: failed loading '/etc/yum.repos.d/CentOS-AppStream.repo', skipping.
Repository extras is listed more than once in the configuration
CentOS-8 - Base 106 kB/s | 4.6 MB 00:44
CentOS-8 - Base 1.0 kB/s | 8.1 kB 00:08
Errors during downloading metadata for repository 'extras':
- Status code: 404 for https://vault.centos.org/centos/8/updates/x86_64/repodata/repomd.xml (IP: FILTERED)
Error: Failed to download metadata for repo 'extras': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

DNF

rm -rf /var/cache/dnf

dnf update --refresh

Warning: failed loading '/etc/yum.repos.d/CentOS-AppStream.repo', skipping.
Repository extras is listed more than once in the configuration
CentOS-8 - Base                                                                                                                               10 kB/s | 3.9 kB     00:00
CentOS-8 - Base                                                                                                                               23 kB/s | 8.1 kB     00:00
Errors during downloading metadata for repository 'extras':
  - Status code: 404 for https://vault.centos.org/centos/8/updates/x86_64/repodata/repomd.xml (IP: FILTERED)
Error: Failed to download metadata for repo 'extras': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

Any pointers on how to diagnose and resolve this issue?

Best Answer

Switch from CentOS 8 to Stream 8 instructions are buried under a few clicks on the download page

# Converting from CentOS Linux 8 to CentOS Stream 8                               
dnf --disablerepo '*' --enablerepo extras swap centos-linux-repos centos-stream-repos
dnf distro-sync

Upgrade transaction can work while not being completely up to date.

Do not enable vault, which is for archival only. Leaving it installed encourages the bad practice of using end of life software.

Apparently extras repo survives for 8 and there is where release packages for Stream (and SIGs) live.

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