On 04/11/2013 11:47 AM, arvind viswanathan wrote: > Hi, > I was wondering if multiple remote agents can access the same libvirtd. How > do we prevent conflicting commands from the different agents. Can different > access permission be set for the agents? (The documentation usually goes > over the case where one agent can access multiple libvirtd and not this > case) Yes, multiple connections can access the same libvirtd (up to max_clients in /etc/libvirt/libvirtd.conf), whether local or remote. In fact, for some APIs, such as migration, you HAVE to have two connections if you want to track progress of a long-running command (the second connection can issue non-blocking queries while the first connection is still blocked). Conflict between connection is prevented by using proper mutex locking around critical sections within libvirtd. As for differing permissions per connection, we aren't quite there yet. Daniel Berrange is working on a patch series that will add fine-grained ACL (access control list) permissions per connection, but it is not yet complete; read the libvir-list@xxxxxxxxxx archives for more details on what will be added sometime in the future. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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