[root@svr ddrr]# yum list iostat

Loaded plugins: fastestmirror

Repository epel is listed more than once in the configuration

Determining fastest mirrors

http://ftp.daumkakao.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

Trying other mirror.

To address this issue please refer to the below knowledge base article

https://access.redhat.com/articles/1320623

If above article doesn't help to resolve this issue please open a ticket with Red Hat Support.

http://download.fedoraproject.org/pub/epel/6/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

Trying other mirror.

http://ftp.daumkakao.com/centos/6/extras/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

Trying other mirror.

http://ftp.daumkakao.com/centos/6/updates/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found"

Trying other mirror.

Error: No matching Packages to list

echo "https://vault.centos.org/6.10/os/x86_64/" > /var/cache/yum/x86_64/6/base/mirrorlist.txt

echo "http://vault.centos.org/6.10/extras/x86_64/" > /var/cache/yum/x86_64/6/extras/mirrorlist.txt

echo "http://vault.centos.org/6.10/updates/x86_64/" > /var/cache/yum/x86_64/6/updates/mirrorlist.txt

echo "http://vault.centos.org/6.10/sclo/x86_64/rh/" > /var/cache/yum/x86_64/6/centos-sclo-rh/mirrorlist.txt

echo "http://vault.centos.org/6.10/sclo/x86_64/sclo/" > /var/cache/yum/x86_64/6/centos-sclo-sclo/mirrorlist.txt

echo '[base]

name=CentOS-$releasever - Base

baseurl=https://vault.centos.org/$releasever/os/$basearch/

gpgcheck=0 

[updates]

name=CentOS-$releasever - Updates

baseurl=https://vault.centos.org/$releasever/updates/$basearch/

gpgcheck=0

[extras]

name=CentOS-$releasever - Extras

baseurl=https://vault.centos.org/$releasever/extras/$basearch/

gpgcheck=0' > /etc/yum.repos.d/Vault.repo

yum repolist