====== AlmaLinux 9 — Mirror Configuration ======

The local mirror covers AlmaLinux 9 (''x86_64'') including BaseOS, AppStream, and extras repositories. AlmaLinux is a community-driven RHEL-compatible distribution and a drop-in replacement for CentOS.

See also: [[mirrors:rocky|Rocky Linux 9]] — an alternative CentOS replacement with the same package structure.

===== DNF / YUM Repository Configuration =====

Disable the default upstream repos and install the local mirror repo file:

<code bash>
# Disable upstream repos
sed -i 's/^enabled=1/enabled=0/' /etc/yum.repos.d/almalinux*.repo

# Download and install local mirror repo
curl -o /etc/yum.repos.d/nplab-mirror.repo https://mirror.nplab.bth.se/configs/almalinux/almalinux9.repo

dnf clean all
dnf makecache
</code>

===== Release Reference =====

^ Release ^ Arch ^ Local URL ^ Config File ^
| AlmaLinux 9 | x86_64 | ''https://mirror.nplab.bth.se/almalinux/9/'' | [[https://mirror.nplab.bth.se/configs/almalinux/almalinux9.repo|almalinux9.repo]] |

**Download and apply (run as root):**

<code bash>
curl -o /etc/yum.repos.d/nplab-mirror.repo https://mirror.nplab.bth.se/configs/almalinux/almalinux9.repo
dnf clean all && dnf makecache
</code>

===== Mirror Structure =====

<code>
/almalinux/9/
  BaseOS/x86_64/os/    ← base system packages
  AppStream/x86_64/os/ ← additional applications
  extras/x86_64/os/    ← community extras
</code>

===== Notes =====

* TBD