CentOS is out of date – yum upgrade is failing – Fixes for yum update and yum upgrade

CentOS 7 Is Broken for Upgrade

In the  last few year RedHat destroyed CentOS 7. Now we’ve moved on to Debian, Ubuntu, and Alma Linux.

If you have an old system, you’ll see a number of errors. The big clues are `yum update` fails and `yum upgrade` fails.

Step 1 – Fix the 404s.

Typically they start off with a 404. It’s a long hairy message about the repository configuration, but the top will look like this:

...
http://mirror.centos.org/centos/7/sclo/x86_64/rh/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found

or this:

...
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=genclo error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org"

They end list this:

Cannot find a valid baseurl for repo: base/7/x86_64

Replace the mirror lists:

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-*

Next yum upgrade again.

Step 2 – Fix invalid baseurl centos-sclo-sclo repo

You’ll see a big message again and at the bottom:

Cannot find a valid baseurl for repo: centos-sclo-sclo

Remove the broken repo:

mv /etc/yum.repos.d/CentOS-SCLo-scl.repo /etc/yum.repos.d/CentOS-SCLo-scl.disabled

Digital Ocean Trouble with icinga2-common

At Digital Ocean you may encounter this problem:

The GPG keys listed for the "ICINGA (stable release for epel)" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.

Failing package is: icinga2-common-2.14.3-1.el7.x86_64
GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ICINGA

The solution is:

rpm --import https://packages.icinga.com/icinga.key
yum clean all
yum makecache
yum upgrade

Virtualmin unauthorized

failure: repodata/repomd.xml from virtualmin: [Errno 256] No more mirrors to try.
https://5600280:[email protected]/vm/6/centos/7/x86_64/repodata/repomd.xml: [Errno 14] HTTPS Error 401 - Unauthorized

You need to update your license or do this on a legacy system:

virtualmin downgrade-license --perform

Virtualmin package  no signed fix

Package wbm-virtual-server-7.20.1.gpl-1.noarch.rpm is not signed

Upgrade so:

yum upgrade --nogpgcheck

You will cry at Stack

• https://serverfault.com/questions/904304/could-not-resolve-host-mirrorlist-centos-org-centos-7

sqlite problems

Disable that bad repo

yum-config-manager --disable centos-sclo-rh
yum-config-manager --disable centos-sclo-sclo

Maybe try this if it fails again:

yum remove sclo-php55-php-pecl-imagick

See also

Virtualmin doesn’t upgrade: How to fix invalid signature Virtualmin apt packages