[Repository - atrpms]

$ vi /etc/yum.repos.d/atrpms.repo

[atrpms]
name=Redhat Enterprise Linux $releasever - $basearch - ATrpms
baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable
enabled=0
gpgcheck=1
gpgkey=http://atrpms.net/RPM-GPG-KEY.atrpms

$ rpm --import http://atrpms.net/RPM-GPG-KEY.atrpms

[Repository - elrepo]

http://elrepo.org/tiki/tiki-index.php

# rpm --import http://elrepo.org/RPM-GPG-KEY-elrepo.org
# rpm -Uvh http://elrepo.org/elrepo-release-6-4.el6.elrepo.noarch.rpm
# vi /etc/yum.repos.d/elrepo.repo
念のため変更
enabled=1 --> enabled=0

[Repository - CentOS-Extras,CentOS-Testing]

# rpm --import http://centos.karan.org/RPM-GPG-KEY-karan.org.txt
# vi /etc/yum.repos.d/kbsingh-CentOS-Extras.repo
[kbs-CentOS-Extras]
name=CentOS.Karan.Org-EL$releasever - Stable
gpgcheck=1
gpgkey=http://centos.karan.org/RPM-GPG-KEY-karan.org.txt
enabled=0
baseurl=http://centos.karan.org/el$releasever/extras/stable/$basearch/RPMS/
[kbs-CentOS-Testing]
name=CentOS.Karan.Org-EL$releasever - Testing
gpgcheck=1
gpgkey=http://centos.karan.org/RPM-GPG-KEY-karan.org.txt
enabled=0
baseurl=http://centos.karan.org/el$releasever/extras/testing/$basearch/RPMS/

[Repository - DAG]

DAG（rpmforge）

# vi /etc/yum.repos.d/CentOS-Dag.repo
[dag]
name=CentOS-$releasever - Dag
baseurl=http://ftp.riken.jp/Linux/dag/redhat/el$releasever/en/$basearch/dag
http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=0
gpgkey=http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt