Re: [Openstack] Mixed ml2 drivers in single Openstack setup

Tue, 01 Nov 2016 02:47:22 -0700

In principle... In the fully general case I think there are issues lurking, so it would indeed be interesting to hear about real experience from people who have done this. 

FWIW here's what I think I understand about mixed ML2 configurations:

- We're talking about 'type' drivers and 'mechanism' drivers. Type drivers are about how instance data is transported between compute hosts. Mechanism drivers are about what happens on each compute host to connect instance data into that ('type') system.

- If you configure multiple type drivers, the first one will always be used, subject to resource availability. E.g. with 'vlan,vxlan', you would only start using VXLAN if all 4094 VLANs were already in us.

- OTOH if you configure multiple mechanism drivers, they will be asked in turn if they want to handle connecting up (aka binding) each new Neutron port. So different mechanism drivers can in principle handle different kinds of port.

- One issue that I suspect to be lurking is: what if the L3 plugin/agent that you need for a port - e.g. to map a floating IP onto it - depends on the mechanism driver that is used to bind that port?

I hope those points are useful to start discussing this interesting topic further. 

    Neil 


From: Remo Mattei
Sent: Tuesday, 1 November 2016 06:09
To: Chris
Cc: [email protected]; Soputhi Sea
Subject: Re: [Openstack] Mixed ml2 drivers in single Openstack setup

You can with ml2 mix plugins. You will have to look at the options but it is designed for that. 

Sent from my iPad

On Oct 31, 2016, at 9:08 PM, Chris <[email protected]> wrote:

Hello,

 

We currently use the flat ml2 driver in our Openstack setup (around 500 nodes).

We now want to change to a network vendor specific ml2 driver. So the legacy compute nodes will use the flat network and compute nodes added in the future will use the network based on the new ml2 vendor plugin.

 

Question is it possible to mix two network setups like described above? We don’t use regions could this be a possible solution?

 

Any help and answer appreciated.

 

Cheers

Chris

!DSPAM:1,581818fd210478584850555!
_______________________________________________
Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post to     : [email protected]
Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack


!DSPAM:1,581818fd210478584850555!

_______________________________________________
Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
Post to     : [email protected]
Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack

Reply via email to