[Openstack] Nova Floating IP Assignment

Georgios Dimitrakakis giorgis at acmac.uoc.gr
Tue Mar 10 19:49:29 UTC 2015


 Hello stackers!

 I was wondering if it's possible to instruct nova not to give
 every time the first available floating IP address but instead
 select randomly from the available pool.

 The problem that I am facing is that if I terminate a VM which has
 for example the floating IP 1.1.1.100 and then very fast start
 a new one the new one obviously gets the previous IP address. In most
 cases in my configuration the new VM starts at another hypervisor
 and the router is  not routing the packets to the new hypervisor
 but instead for quiet some time is routing them to the old one
 (checked with traceroute).

 Any ideas how to overcome this?


 Best regards,

 George




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