[Openstack-operators] Multi Host flag in Havana (neutron), central network node is perfect chocking point..
Zeeshan Ali Shah
zashah at kth.se
Fri Apr 11 07:53:29 UTC 2014
Thanks for input . Yes the basic issue with us is the single point of
entry/exit to public traffic , you can see as a single point of failure. If
for e.g. your network node goes down , all of VMs would lost the public
I am looking forward for this (old style nova-network) kind of in neutron
in upcoming icehouse release.
On Fri, Apr 11, 2014 at 4:46 AM, Nick Ma <mali at awcloud.com> wrote:
> Yes, there are scheduler options in neutron.conf which can schedule
> network/router/load balancer to different agents. You also can check
> neutron/scheduler directory in Icehouse RC, you can find
> LeastRouterScheduler which will greatly help for resource usage. AFAIK, it
> is not backported to Havana, but easy to do it by hand.
> By the way, if you distribute all the agents on all compute nodes, all
> your compute nodes are open to public, meaning that it will be assigned a
> public IP to make itself as a router gateway.
> It also must be mentioning that when some agent fails, all the resources
> binded to that agent are down, and you have to re-schedule all of them by
> hand (command line interface). There's a script called neutron-ha-tool can
> help you deal with this situation. Check it in the following links:
> Li Ma
> ----- Original Message -----
> From: "Zeeshan Ali Shah" <zashah at kth.se>
> To: openstack-operators at lists.openstack.org
> Sent: 星期五, 2014年 4 月 11日 上午 4:08:15
> Subject: [Openstack-operators] Multi Host flag in Havana (neutron),
> central network node is perfect chocking point..
> There used to be a --multi_host flag in nova-network . i.e. to have in-out
> traffic from compute itself. I think that was more distributed and
> non-choking model .
> We run a dedicated neutron node and public network goes in-out from it.
> With high traffic app this created a perfect single point of failure . And
> yes I have tested it with high traffic load.
> I was thinking to run L3 and l2 agent on all compute nodes .
> Q1. Does it makes sense ?
> 2. Has anyone done it ? We are using Havana release.
> 3 and any suggestion for above ? --
> Zeeshan Ali Shah
> System Administrator - PDC HPC
> PhD researcher (IT security)
> Kungliga Tekniska Hogskolan
> +46 8 790 9115
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
Zeeshan Ali Shah
System Administrator - PDC HPC
PhD researcher (IT security)
Kungliga Tekniska Hogskolan
+46 8 790 9115
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