Open Stack

You can create a router in each project and attach it to the specific
external network (via gw) ... but:

* With the default policy, the tenant can create another router for the
other network. Quick solution: change the policy to not allow creating
routers
* I think it will be confusing for the users, they will see 2 ip allocation
pools, if they choose the wrong allocation pool, wont work. You could
pre-allocate a set of floating IPs per project and then change the policy
to not allow allocating more ips to the tenants  ... (I haven't tried this!)
* The users will see both external networks in the network topology  (not a
big deal, I think) ...

More ideas?

Regards

2015-11-19 23:32 GMT+01:00 Ray Sun <xiaoquqi at gmail.com>:

> Hauke,
> This is interesting, Is there any way to specify tenantA can only use
> ext-subnet1 and tenantB only use ext-subnet2?
>
> Thanks.
>
> Best Regards
> -- Ray
>
> On Thu, Nov 19, 2015 at 7:27 PM, Hauke Bruno Wollentin <
> hauke-bruno.wollentin at innovo-cloud.de> wrote:
>
>> Hi Ray,
>>
>> in general it is possible to use two (or more) subnets in one external
>> network, but all instances then will get IPs from both subnets (if the
>> floating IPs on subnetA are allocated, the next ones will be allocated
>> from
>> subnetB).
>>
>> So you need to create two (non-shared, tenant specific) external
>> networks. For
>> the VLAN dedication you could use 1 L3 Agent per 1 external network.
>>
>> cheers,
>> hauke
>>
>> ---
>> original message
>> timestamp: Thursday, November 19, 2015 06:18:06 PM
>> from: Ray Sun <xiaoquqi at gmail.com>
>> to: openstack at lists.openstack.org
>> cc:
>> subject: [Openstack] How to support for multiple external networks?
>> message id: <CAMWzbMdFpGwq315FWQNu7k_gACG1ymiAg3PkG9Krpnd5M9-
>> CEg at mail.gmail.com>
>>
>> > I want to setup multiple external networks, but I don't know how to make
>> > this works.
>> >
>> > Here's my user requirements:
>> > There are two departments want to use my cloud, but as history problem,
>> > they wants their VMs to use original IP range. DepA wants to use
>> floating
>> > ip in 192.168.66.0/24, DepB wants to use floating ip in 192.168.77.0/24
>> .
>> >
>> > I can create multiple subnets in my external network. But I am not quite
>> > sure if this can work in OpenStack. In my network environment,
>> > 192.168.66.0/24 and 192.168.77.0/24 are two VLANs.
>> >
>> >
>> > Anybody know how to implement this kind of scenarios? If this is not
>> > possible, how can I design my architecture to meet the requirements.
>> >
>> > Thanks.
>> >
>> > Best Regards
>> > -- Ray
>> --
>> Hauke Bruno Wollentin
>> (Infrastructure Engineer Cloud)
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>
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-- 
José Riguera López <jriguera at gmail.com>
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