When running yum update on a RHEL 5 system, the following error is shown:
http://linux.dell.com/repo/hardware/latest/platform_independent/rh50_64/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found Trying other mirror. Error: Cannot retrieve repository metadata (repomd.xml) for repository: dell-omsa-indep. Please verify its path and try again
Dell discontinued support for RHEL 5 in the latest version of their yum repo, which is enabled by default, but they keep the old copies online.
Point the Dell repo at an older version:
sed -i 's/latest/Linux_Repository_14.12.00/g' /etc/yum.repos.d/dell-omsa-repository.repo
You may now re-run yum.