Followed your suggestion still giving me error:
[root@vps /]# yum clean all
Loaded plugins: fastestmirror, priorities, protectbase, replace
Cleaning repos: base extras mratwork-centalt mratwork-epel mratwork-ius mratwork-ius-c5 mratwork-litespeed mratwork-litespeed-update mratwork-release-neutral-arch
: mratwork-release-neutral-noarch mratwork-release-version-arch mratwork-release-version-noarch mratwork-varnish-3.0 updates vz-base vz-updates
Cleaning up Everything
Cleaning up list of fastest mirrors
[root@vps /]# yum clean all
Loaded plugins: fastestmirror, priorities, protectbase, replace
Cleaning repos: base extras mratwork-centalt mratwork-epel mratwork-ius mratwork-ius-c5 mratwork-litespeed mratwork-litespeed-update mratwork-release-neutral-arch
: mratwork-release-neutral-noarch mratwork-release-version-arch mratwork-release-version-noarch mratwork-varnish-3.0 updates vz-base vz-updates
Cleaning up Everything
[root@vps /]# yum clean all
Loaded plugins: fastestmirror, priorities, protectbase, replace
Cleaning repos: base extras mratwork-centalt mratwork-epel mratwork-ius mratwork-ius-c5 mratwork-litespeed mratwork-litespeed-update mratwork-release-neutral-arch
: mratwork-release-neutral-noarch mratwork-release-version-arch mratwork-release-version-noarch mratwork-varnish-3.0 updates vz-base vz-updates
Cleaning up Everything
[root@vps /]# yum clean all
Loaded plugins: fastestmirror, priorities, protectbase, replace
Cleaning repos: base extras mratwork-centalt mratwork-epel mratwork-ius mratwork-ius-c5 mratwork-litespeed mratwork-litespeed-update mratwork-release-neutral-arch
: mratwork-release-neutral-noarch mratwork-release-version-arch mratwork-release-version-noarch mratwork-varnish-3.0 updates vz-base vz-updates
Cleaning up Everything
[root@vps /]# yum update -y
Loaded plugins: fastestmirror, priorities, protectbase, replace
Determining fastest mirrors
* base: mirrors.gigenet.com
* extras: mirror.millry.co
* mratwork-epel: mirror.compevo.com
* mratwork-ius: dfw.mirror.rackspace.com
* updates: centos.mirror.lstn.net
base | 3.7 kB 00:00
base/primary_db | 3.7 MB 00:00
extras | 3.3 kB 00:00
extras/primary_db | 30 kB 00:00
http://centos.alt.ru/repository/centos/6/i386/repodata/repomd.xml: [Errno 14] Peer cert cannot be verified or peer cert invalid
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: mratwork-centalt. Please verify its path and try again
[root@vps /]#