5.6 Configuring Access to a Local ULN Mirror

If you have set up a local ULN mirror, you can configure your local Oracle Linux systems to receive yum updates from that server.

To configure an Oracle Linux system as a yum client:

  1. Import the GPG key:

    # rpm --import /usr/share/rhn/RPM-GPG-KEY
  2. Disable any existing yum repositories configured in the /etc/yum.repos.d directory. You can either edit any existing repository files and disable all entries by setting enabled=0 or you can use yum-config-manager:

    # yum-config-manager --disable \*

    Alternately, you can rename any of the files in this directory so that they do not use the .repo suffix. This causes yum to ignore these entries. For example:

    # cd /etc/yum.repos.d
    # for i in *.repo; do mv $i $i.disabled; done
  3. In the /etc/yum.repos.d directory, create the file local-yum.repo, which contains entries such as the following for an Oracle Linux 6 yum client:

    name=Oracle Linux $releasever - $basearch - latest
    name=Unbreakable Enterprise Kernel Release 3 for Oracle Linux $releasever - $basearch - latest
    name=Oracle Linux $releasever - $basearch - addons

    To distinguish the local repositories from the ULN repositories, prefix the names of their entries with a string such as local_.

    Replace local_uln_mirror with the IP address or resolvable host name of the local ULN mirror.

    The example configuration enables the local_ol6_latest, local_ol6_UEKR3_latest, and local_ol6_addons channels.

  4. To test the configuration:

    1. Clear the yum metadata cache:

      # yum clean metadata
    2. Use yum repolist to verify the configuration, for example:

      # yum repolist
       Loaded plugins: rhnplugin, security
       This system is receiving updates from ULN. 
      0 packages excluded due to repository protections
      repo id                         repo name                                    status
      local_ol6_addons                Oracle Linux 6 - x86_64 - latest             367
      local_ol6_x86_64_latest         Oracle Linux 6 - x86_64 - latest             35,995
      local_ol6_x86_64_UEKR3_latest   Unbreakable Enterprise Kernel Release 3 
                                      for Oracle Linux 6 - x86_64 - latest         41

      If yum cannot connect to the local ULN mirror, check that the firewall settings on the local ULN mirror server allow incoming TCP connections to the HTTP port (usually, port 80).

  5. You can now run yum update to pick up new updates from the local ULN mirror.