There are something wrong for Kloxo-MR in Centos 6.
In my experience, better update mysql to mariadb from centalt with follow:
1. Change /etc/yum.repos.d/kloxo-mr.repo:
from:
[kloxo-mr-centalt]
name=Kloxo-MR - centalt - $basearch
baseurl=http://centos.alt.ru/repository/centos/$releasever/$basearch/
mirrorlist=http://rpms.potissima.com/repo/mirrors/centalt-centos-$releasever-$basearch-mirrors.txt
enabled=1
gpgcheck=0
exclude=openssh* perl* mariadb*
to:
[kloxo-mr-centalt]
name=Kloxo-MR - centalt - $basearch
baseurl=http://centos.alt.ru/repository/centos/$releasever/$basearch/
mirrorlist=http://rpms.potissima.com/repo/mirrors/centalt-centos-$releasever-$basearch-mirrors.txt
enabled=1
gpgcheck=0
exclude=openssh* perl*
2. Run:
yum clean all
yum update
3. copy '/etc/my.cnf.rpmsave' to '/etc/my.cnf.d/my.cnf'.
4. Restart mysql with 'service mysqld restart'.