On Aug 26, 2013, at 4:06 PM, Edgar Magana <[email protected]> wrote:
> Hi Developers, > > Let me explain my point of view on this topic and please share your thoughts > in order to merge this new feature ASAP. > > My understanding is that multi-host is nova-network HA and we are > implementing this bp > https://blueprints.launchpad.net/neutron/+spec/quantum-multihost for the same > reason. > So, If in neutron configuration admin enables multi-host: > etc/dhcp_agent.ini > > # Support multi host networks > # enable_multihost = False > > Why do tenants needs to be aware of this? They should just create networks in > the way they normally do and not by adding the "multihost" extension. I was pretty confused until I looked at the nova-network HA doc [1]. The proposed design would seem to emulate nova-network's multi-host HA option, where it was necessary to both run nova-network on every compute node and create a network explicitly as multi-host. I'm not sure why nova-network was implemented in this way, since it would appear that multi-host is basically all-or-nothing. Once nova-network services are running on every compute node, what does it mean to create a network that is not multi-host? So, to Edgar's question - is there a reason other than 'be like nova-network' for requiring neutron multi-host to be configured per-network? m. 1: http://docs.openstack.org/trunk/openstack-compute/admin/content/existing-ha-networking-options.html > I could be totally wrong and crazy, so please provide some feedback. > > Thanks, > > Edgar > > > From: Yongsheng Gong <[email protected]> > Date: Monday, August 26, 2013 2:58 PM > To: "Kyle Mestery (kmestery)" <[email protected]>, Aaron Rosen > <[email protected]>, Armando Migliaccio <[email protected]>, Akihiro > MOTOKI <[email protected]>, Edgar Magana <[email protected]>, Maru Newby > <[email protected]>, Nachi Ueno <[email protected]>, Salvatore Orlando > <[email protected]>, Sumit Naiksatam <[email protected]>, Mark > McClain <[email protected]>, Gary Kotton <[email protected]>, > Robert Kukura <[email protected]> > Cc: OpenStack List <[email protected]> > Subject: Re: About multihost patch review > > Hi, > Edgar Magana has commented to say: > 'This is the part that for me is confusing and I will need some clarification > from the community. Do we expect to have the multi-host feature as an > extension or something that will natural work as long as the deployment > include more than one Network Node. In my opinion, Neutron deployments with > more than one Network Node by default should call DHCP agents in all those > nodes without the need to use an extension. If the community has decided to > do this by extensions, then I am fine' at > https://review.openstack.org/#/c/37919/11/neutron/extensions/multihostnetwork.py > > I have commented back, what is your opinion about it? > > Regards, > Yong Sheng Gong > > > On Fri, Aug 16, 2013 at 9:28 PM, Kyle Mestery (kmestery) <[email protected]> > wrote: >> Hi Yong: >> >> I'll review this and try it out today. >> >> Thanks, >> Kyle >> >> On Aug 15, 2013, at 10:01 PM, Yongsheng Gong <[email protected]> wrote: >> >> > The multihost patch is there for a long long time, can someone help to >> > review? >> > https://review.openstack.org/#/c/37919/ >> > _______________________________________________ OpenStack-dev mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
