Plesk update fails after converting the server from Centos 8 to AlmaLinux 8: Failed to download metadata for repo 'PLESK_18_0_41-extras'

Symptoms

• Plesk update or conversion to AlmaLinux OS fails with:
  

  CONFIG_TEXT: Errors during downloading metadata for repository 'PLESK_18_0_41-extras':
  - Status code: 404 for http://autoinstall.plesk.com/pool/PSA_18.0.41_8197/extras-rpm-CentOS-8-x86_64/repodata/repomd.xml (IP: 203.0.113.2)
  Error: Failed to download metadata for repo 'PLESK_18_0_41-extras': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

Cause

Old Plesk repos prevents the server from update:

# grep -i centos /etc/yum.repos.d/*
/etc/yum.repos.d/plesk.repo:baseurl=http://autoinstall.plesk.com/pool/PSA_18.0.41_8197/extras-rpm-CentOS-8-x86_64/
/etc/yum.repos.d/plesk.repo:baseurl=http://autoinstall.plesk.com/pool/PHP_7.3.33_248/dist-rpm-CentOS-8-x86_64/

Resolution

1. Connect to the server via SSH.

2. Disable the /etc/yum.repos.d/plesk.repo:

   # mv /etc/yum.repos.d/plesk.repo /etc/yum.repos.d/plesk.repo.bk

3. Re-run Plesk update.