Hi, I opened some time ago a thread about this argument (more in general about HA for OpenStack): http://www.gossamer-threads.com/lists/openstack/operators/33777. Now I'm definitely focusing on making the Neutron's agents highly available. As stated in the mentioned thread there's no solution for making L3 agent HA with the active/active paradigm. But I have to use the active/active paradigm. In the mentioned thread, Jay suggests to use a tool to replicate l3 agent's status to the other node upon failure of the current node (I haven't used this tool yet). Reading the HA guide by Openstack (http://docs.openstack.org/high-availability-guide/content/_running_neutron_metadata_agent.html) there's not a solution active/active-based also for the metadata agent. I wonder if there's a similar tool to replicate the metadata agent's status on the other node, as for the l3 agent. thank you, Alvise -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20140306/02031358/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 1756 bytes Desc: not available URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20140306/02031358/attachment.bin>