yum install libvirt
apt-get install libvirt-bin
vi /etc/libvirt/libvirtd.conf
listen_tls = 0
listen_tcp = 1
tcp_port = 16059
auth_tcp = "none"
vi /etc/sysconfig/libvirtd
#LIBVIRTD_ARGS="--listen"
vi /etc/init/libvirt-bin.conf
exec /usr/sbin/libvirtd -d
exec /usr/sbin/libvirtd -d -l
service libvirtd restart
service libvirt-bin restart