To be able to execute virt-manager without root privilege,

– create a new group

# group add libvirt

– Add the required users to this group by editing the /etc/groups file

– Edit the libvirtd configurations:

# vi /etc/libvirt/libvirtd.conf

– Add the following configurations.

unix_sock_group = "libvirt"
auth_unix_rw = "none"

– Restart libvirtd,

#service libvirtd restart

– Logout and try to access libvirtd

$ ssh -X <username>@<host> virt-manager

./arun