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Eli,

you are correct Swarm support only one active/passive deployment model, but according to Docker documentation https://docs.docker.com/swarm/multi-manager-setup/
even replica can handle user request “You can use the docker command on any Docker Swarm primary manager or any replica."

it means "round-robin" should works.

—
Egor

From: "Qiao,Liyong" <liyong.qiao at intel.com<mailto:liyong.qiao at intel.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>>
Date: Sunday, November 15, 2015 at 23:50
To: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>>
Subject: Re: [openstack-dev] [neutron][heat][magnum] LBaaS of Neutron

Hi Sergey

Thanks for your information, it's really help.
Actually I am from Magnum team and we are using heat to do orchestration on docker swarm bay.

Swarm master only support A-P mode (active-passive), I wonder if there any workaround to
implement my requirement :
----------------
VIP : 192.168.0.10

master-1 192.168.0.100 (A)
master-2 192.168.0.101 (P)

if I want to make VIP to alway connect with master-1(since it is A mode),
only switch to master-2 when master-1 down. what should I do?
---------------

Below link is the heat template of k8s(k8s supports A-A mode, so it can use ROUND_ROBIN).
https://github.com/openstack/magnum/blob/master/magnum/templates/kubernetes/kubecluster.yaml#L343

P.S Copy to Magnum team.

thanks
Eli.


On 2015年11月16日 15:15, Sergey Kraynev wrote:
On 16 November 2015 at 09:46, Qiao,Liyong <liyong.qiao at intel.com<mailto:liyong.qiao at intel.com>> wrote:
hi, I have some questions about neutorn LBaas.

seen from the wiki, the load balancer only support:


Table 4.6. Load Balancing Algorithms

Name
LEAST_CONNECTIONS
ROUND_ROBIN

https://wiki.openstack.org/wiki/Neutron/LBaaS/API

think about if I have a A-P mode HA

VIP : 192.168.0.10

master-1 192.168.0.100 (A)
master-2 192.168.0.101 (P)

if I want to use VIP to alway connect with master-1(since it is A mode),
only switch to master-2 when master-1 down. what should I do?
any plan to support more algorithms for neutron lbaas?

BTW, the usage is from heat:

  etcd_pool:
    type: OS::Neutron::Pool
    properties:
      protocol: HTTP
      monitors: [{get_resource: etcd_monitor}]
      subnet: {get_resource: fixed_subnet}
      lb_method: ROUND_ROBIN
      vip:
        protocol_port: 2379



thanks,
Eli.

--
BR, Eli(Li Yong)Qiao

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Hi, Qiao,Liyong

I can not say about LBaaS team plans for supporting some additional algorithms :)
AFAIK, they do not plan add it to v1 API.
As I understand it may be discussed as part of v2 API [1]

In the Heat we have related BP [2], with several patches on review. So if it will be implemented on Neutron side, we may add such functionality too.

[1] http://developer.openstack.org/api-ref-networking-v2-ext.html#lbaas-v2.0
[2] https://blueprints.launchpad.net/heat/+spec/lbaasv2-suport

--
Regards,
Sergey.



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--
BR, Eli(Li Yong)Qiao