kernel: Add config for tc u32 filter and mirred action

[amshinde]

These are needed for running Kata Containers in minikube.
Kata uses linux tc for its networking

Signed-off-by: Archana Shinde [email protected]

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[minikube-bot]

Can one of the admins verify this patch?

[tstromberg]

Thank you! The test failure is an unrelated flake.

[tstromberg]

@minikube-bot ok to test

[tstromberg]

As a side note, I am really excited about the possibility of running Kata containers in minikube. Please let me know if there is anything else I can do to help.

[grahamwhaley]

Hi @tstromberg - sure - the original issue turned up as I was documenting how to install/run kata under minikube: kata-containers/documentation#445

So, what would it take to get Kata as a supported option in minikube, like I think I have seen gvisor is ? If we can work together on that, that would be great :-)

[tstromberg]

Hi @tstromberg - sure - the original issue turned up as I was documenting how to install/run kata under minikube: kata-containers/documentation#445

So, what would it take to get Kata as a supported option in minikube, like I think I have seen gvisor is ? If we can work together on that, that would be great :-)

You know, I'm not actually sure what it will take, but I'm happy to help point you in the right direction. When the maintainers came up with the minikube development roadmap for 2019, we identified that we wanted support for Kata containers, but no one has yet stepped up to look into it. I think Kata Containers have a great design and would personally love to see support for it. I've now opened an issue
to track changes and discussion for it: #4347

I agree that following the gvisor addon is a good approach, but if for some reason it's too complicated to include as an addon, I'm happy to entertain alternative ideas. @priyawadhwa wrote the gvisor addon and may have additional guidance.

Feel free to find me on the #minikube slack channel if you have any questions that are better addressed in real time. Thanks for contributing this change!

[grahamwhaley]

Hi @tstromberg - ah, thanks for the roadmap link - afaik nobody in the Kata community knew about that - but, now we do! ;-)
I started using Minikube to do quick Kata demos/workshops recently, as it is a nice way to get a small cluster up etc. At that time I also considered what it would take to get Kata as a native component into Minikube. Let me go have a look what it took for gvisor and see if that maps at all to how Kata is built/installed/released. It would be nice if we can have Kata releases automatically updating in Minikube etc.

Which leads me to another couple of questions then:

1. Do we know when this PR will land in a Minikube release? Is there a release roadmap etc. - so I know what to document/tell folks in Kata-land about which Minikube versions work with which setups etc.

2. Does minikube run a CI system? In which case maybe we can get it to install Kata and run our tests - that, and/or, we'd probably like to do a similar thing in our Kata CI - to check that we don't break minikube integration either.

[grahamwhaley]

FMI, the PR to add gvisor looks to be #3399
@amshinde @egernst - this looks quite like it uses a pod to deploy much like kata-deploy (in fact, was there some 'inspiration' there??). That might make it not too onerous to add Kata to Minikube.

We should probably open a new Issue here on Minikube to track this...

[amshinde]

@grahamwhaley Yes, I did have a brief look at that PR last week, and much of it is essentially what kata-deploy does.
@grahamwhaley In case you missed it, @tstromberg has opened #4347 to track the support for Kata.