seems miss repodata.
[root@RHEl53 yum.repos.d]# yum makecache
Loaded plugins: rhnplugin, security
This system is not registered with RHN.
RHN support will be disabled.
grsecurity-stable-utils | 1.9 kB 00:00
http://rpm.cormander.com/repo/grsec/ker ... repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: grsecurity-stable-kernel. Please verify its path and try again
[root@RHEl53 yum.repos.d]# cat grsecurity.repo
# Yum Repository file for grsecurity by Corey Henderson
# This particular file is for enterprise linux (RHEL, CentOS, etc)
#
# To use this repository, put this file in: /etc/yum.repos.d/
#
# For more RPM repositories from this packager, go to:
#
http://rpm.cormander.com/repo/[grsecurity-stable-kernel]
name=Stable grsecurity kernel
baseurl=http://rpm.cormander.com/repo/grsec/kernel-stable/i386/
gpgcheck=1
gpgkey=http://rpm.cormander.com/repo/RPM-GPG-KEY-cormander
enabled=1
[grsecurity-stable-utils]
name=Stable grsecurity utilities
baseurl=http://rpm.cormander.com/repo/grsec/utils/el5/i386/
gpgcheck=1
gpgkey=http://rpm.cormander.com/repo/RPM-GPG-KEY-cormander
enabled=1
[grsecurity-latest-kernel]
name=Latest grsecurity kernel
baseurl=http://rpm.cormander.com/repo/grsec/kernel-latest/i386/
gpgcheck=1
gpgkey=http://rpm.cormander.com/repo/RPM-GPG-KEY-cormander
enabled=0