Hi, I am upgrading libvirt from 1.2.9 to 2.0.0 and I have successfully make the libvirtd running. However, virsh cannot connect to hypervisor with following errors: virsh # connect error: failed to connect to the hypervisor root@node-55:/usr/local# virsh -c 'qemu:///system' connect error: failed to connect to the hypervisor error: no connection driver available for qemu:///system Can you give me some suggestion about where will be the problem. Thanks. libvirtd is running: root@node-55:/usr/lib/python2.7/dist-packages# ps aux | grep -i libvirtd root 1246963 0.0 0.0 1245780 3428 ? Ssl 06:04 0:00 /usr/sbin/libvirtd --config /etc/libvirt/libvirtd.conf -l Best Regards Xu Rongjie (Max) Mobile:18658176819