Hi, I have a question regarding using the compute "action" API to assign a floating IP to a server (http://developer.openstack.org/api-ref-compute-v2.1.html#addFloatingIp). Using the API call below [1], I am able to successfully assign a floating IP to a server, even if the floating IP is already assigned to another server. My question is, is there a way or an equivalent API that will fail if the floating IP is already assigned to another node?
My use-case is that I have a couple processes running in parallel, each provisioning instances with floating ips. They often end up querying for the list of available floating ips around the same time, and request the same floating ip to be assigned to different servers... both succeed, and last one "wins". I'd like to find an API call that will fail instead of reassign, so I can avoid implementing some sort of inter-process synchronization on the client side. Any pointers appreciated. Thanks, -Derek [1] $ curl -s -v -X POST -d @addfloatingip.json -H "Content-type: application/json" -H "X-Auth-Token: $OS_TOKEN" https://[hostname]:8774/v2/$OS_TENANT_NAME/servers/[uuid]/action where addfloatingip.json: { "addFloatingIp": { "address": "[ip-address]" } } where "ip-address" is a floating ip already assigned to another instance. _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack