Thanks Tom, this looks helpful. From: [email protected] Subject: Re: [Openstack-operators] Migrating from nova-network to Neutron in Kilo?
On 19/11/15 08:38, Ned Rhudy (BLOOMBERG/ 731 LEX) wrote: > Hello operator friends, > > We're laying out our 2016 roadmaps now, and one of the projects the > Bloomberg cloud team would like to undertake is migrating from our > legacy nova-network setup to Neutron. Our current networking is pretty > simple, with tenancies getting /25s carved out from a single large > subnet for fixed IPs and floating IPs being assigned from another large > subnet as first-come-first serve. While there's room for improvement, we > are totally fine with the initial Neutron migration replicating as close > to the same user experience as possible; our primary interest now is > just getting to Neutron, then taking on larger overhauls once we're free > to navigate in the Neutron universe. > > That being said, there's very little material out there on people > successfully pulling off nova-network to Neutron migrations. References > on the docs wiki to Neutron migration materials are unfinished and > mostly lead to some year-old abandoned changes in Gerrit, and Google > inexorably leads to the same eBay presentation about migrating from > Folsom nova-network to Havana Neutron+NSX SDN. It has some interesting > and useful information, but it's also about old releases and involved a > lot of additional changes (Folsom->Havana, integrating NSX, etc.), > whereas we're just interested in moving from nova-network to Neutron in > place on our Kilo clusters and carrying as little else along for the > ride as possible. > > Therefore, I come to you all to ask for battle stories from anyone who's > gone up against migrating to Neutron and lived to tell the tale. Do your > users roundly curse you and speak angrily of the Great Networking > Betrayal, where you lost all their floating IPs and security groups, or > are you celebrated as the great warlord who slew the diabolical iptables > NAT monster and brought peace and stability (and LBaaS) to cloud > networks everywhere? I heard NeCTAR used this script (https://github.com/NeCTAR-RC/novanet2neutron ) with some success to do a live nova-net to neutron, which might have been Juno or Kilo release.
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