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Updating CentOS Repo Files After Mirrorlist End of Life

What

CentOS Linux 7 reached end of life on June 30, 2024. The normal mirror list no longer provides packages for this release; its final packages are archived at vault.centos.org.

When/Why

Use this procedure only when a legacy CentOS Linux 7 appliance must temporarily regain access to archived packages. The vault is frozen and receives no new security or bug-fix updates.

For a FileWave Server, Booster, or IVS, moving to the supported Debian platform is the durable fix. Review FileWave Server on CentOS - EOL before using this short-term repository workaround.

How

Open a stable SSH or console session. The first commands create a timestamped copy of the complete repository directory; keep the printed backup path for rollback.

repo_backup="/etc/yum.repos.d.before-centos-vault-$(date +%Y%m%d-%H%M%S)"
sudo cp -a /etc/yum.repos.d "$repo_backup"
printf 'Repository backup: %s\n' "$repo_backup"

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

sudo yum clean all
sudo yum makecache
sudo yum repolist

What the commands do:

  1. Replace all instances of mirror.centos.org with vault.centos.org in the .repo files.
  2. Uncomment (sed -i s/^#.*baseurl=http/baseurl=http/g) the baseurl lines in the .repo files.
  3. Comment out (sed -i s/^mirrorlist=http/#mirrorlist=http/g) the mirrorlist lines in the .repo files.

The final two commands rebuild repository metadata and list the enabled repositories. If either command fails, restore the backup before making more changes. A successful cache rebuild confirms access to the archive; it does not make CentOS Linux 7 supported or current.

Rollback

Replace the example backup path below with the exact path printed earlier. This keeps the attempted vault configuration under a separate name while restoring the original repository directory.

repo_backup="/etc/yum.repos.d.before-centos-vault-YYYYMMDD-HHMMSS"
sudo mv /etc/yum.repos.d /etc/yum.repos.d.vault-attempt
sudo cp -a "$repo_backup" /etc/yum.repos.d
sudo yum clean all
sudo yum makecache

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