On Wed, Mar 10, 2010 at 12:02 PM, Tom Georgoulias tomg@mcclatchyinteractive.com wrote:
I have a python script that monitors the VMs on physical host servers running Xen, but the script doesn't work properly on a server I just built with KVM. The script runs as a non-root user and simply gathers some details on the status and names of the domains running on the host.
(snip)
Again, on the KVM server, plain old "virsh list" with the debug level set to "2"
$ export LIBVIRT_DEBUG=2 $ virsh list 14:21:06.532: error : No vport operation path found for host0 14:21:06.550: error : No vport operation path found for host4 14:21:06.555: error : No vport operation path found for host3 14:21:06.598: error : No vport operation path found for host1 14:21:06.599: error : No vport operation path found for host2 14:21:06.615: info : No security driver available Id Name State
Permissions in /var/run/libvirt:
# ls -ld /var/run/libvirt/* srwx------ 1 root root 0 Feb 5 08:53 /var/run/libvirt/libvirt-sock srwxrwxrwx 1 root root 0 Feb 5 08:53 /var/run/libvirt/libvirt-sock-ro drwxr-xr-x 2 root root 4096 Jan 21 14:38 /var/run/libvirt/network drwxr-xr-x 2 root root 4096 Oct 20 18:50 /var/run/libvirt/qemu
Can someone provide some tips on what else I can check, if this might be a bug, or point out any mistakes that I might've made? Any help is appreciated.
Well, I am learning / testing kvm myself, so what I write might not be precise. But because no one seems to be responding ... :)
Look into /etc/libvirt/libvirtd.conf and check out the section "UNIX socket access controls" and make appropriate adjustment. [ I created group 'libvirt' , added myself to the group, and uncommented the line "unix_sock_group = "libvirt"".] Then adjust also the permission bits of the directories and files in /var/run/libvirt to allow access to the group libvirt.
With some luck, you should be able to run the virsh command (for example):
virsh -c qemu:///system list --all
I'm sure there are more authentic way of achieving this. :)
Also, if you create a guest with the -c qemu:///session option, that would allow non-root user to connect it. For more details, please see http://libvirt.org/uri.html .
Another hint: you will have a better chance of getting replies by posting to the centos-virt mailing list.
Akemi