yum error requires: libtcmalloc.so.4

rpm -Uvh http://ceph.com/rpm-cuttlefish/el6/x86_64/ceph-release-1-0.el6.noarch.rpm

vim /etc/yum.repos.d/epel.repo

把
mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-5&arch=$basearch
改:
mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-6&arch=$basearch

yum clean all

yum install munin --nogpgcheck