[caasp-beta] caas v2 networking

[Jerry Hwang]

Nice, thanks Alvaro for the clarification.

Jerry

On Wed, Dec 20, 2017 at 1:38 PM, Alvaro Saurin <alvaro.saurin at suse.com>
wrote:

>
>
> When a pod is configured with "hostNetwork: true", the applications
> running in such a pod can directly see the network interfaces of the host
> machine where the pod was started. From the networking point of view, it
> will behave as any other application running in the host. And, even if
> flannel is still running in the host, the pod will not be automatically
> connected to that overlay network but use the native routing mechanism.
>
> Cheers
>
>
> Alvaro
>
>
>
>
> On 12/20/2017 09:05 PM, Jerry Hwang wrote:
>
> Thanks Flavio.
> So SUSE CaaS v2 networking is flannel (overlay).
> Regardless I set "hostNetwork: True" for Pod, the inter-nodes traffic will
> be still encapsulated in udp backend?
> Any consideration for non-overlay networking solution for v3+?
>
> Jerry
>
> On Wed, Dec 20, 2017 at 1:26 AM, Flavio Castelli <fcastelli at suse.com>
> wrote:
>
>> On 12/11/2017 05:13 AM, Jerry Hwang wrote:
>> > I have a general question.
>> > CaaS v2 networking is flannel overlay networking using udp encapsulation
>> > for traffic between nodes.
>> > If my app is based on docker "host" networking (net=host), how to make
>> > the app migration from docker to caas/kubernetes env possible?
>>
>> You can still tell kubernetes to create a pod that uses the host network:
>>
>> kind: Pod
>> spec:
>>   hostNetwork: True
>> ...
>>
>> However please evaluate whether that makes still sense in the kubernetes
>> context.
>>
>> Cheers
>> Flavio
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>>
>
>
>
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>
> --
> Alvaro Saurin <alvaro.saurin at suse.com> <alvaro.saurin at suse.com>
> Senior Software Engineer
> SUSE Linux GmbH, Maxfeldstr. 5, D-90409 Nürnberg Tel: +49-911-74053-0; Fax: +49-911-7417755 <+49%20911%207417755>; https://www.suse.com/
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>
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