Enable POWER support for Knative Eventing

[gyliu513]

Same as knative/serving#2517

Knative Eventing now only support running on x86 but no POWER support yet, it would be great if Knative Eventing can also run on POWER.

root@gyliu-c11:~# manifest-tool inspect  gcr.io/knative-releases/github.com/knative/eventing/cmd/controller@sha256:3486cb9d337b829907532e78c8098b6680fbe3aa10a0aa81e7db327bb8980640
gcr.io/knative-releases/github.com/knative/eventing/cmd/controller@sha256:3486cb9d337b829907532e78c8098b6680fbe3aa10a0aa81e7db327bb8980640: manifest type: application/vnd.docker.distribution.manifest.v2+json
      Digest: sha256:3486cb9d337b829907532e78c8098b6680fbe3aa10a0aa81e7db327bb8980640
Architecture: amd64
          OS: linux
    # Layers: 2
      layer 1: digest = sha256:d455ccc1cea9edcc50a50e0ee33a9f90c1f45486bacf8cb59e13203d7ee3be66
      layer 2: digest = sha256:02c122024312c011dc8b1666fbce5c8451f73fa08e5b92bb2f1e229ccf7c6162

[gyliu513]

/area build
/kind doc
/kind feature
/kind proposal

[evankanderson]

Absent a volunteer willing to set up the release automation (possibly including provider a cluster framework for running e2e tests on POWER), I suspect that this will probably end up in the icebox.

(Just an FYI -- most of the infrastructure is currently being donated by Google, who does not have a handy GKE-on-POWER option.)

[gyliu513]

Thanks @evankanderson , do you know where does Kubernetes get its infrastructure for POWER?

[evankanderson]

kubernetes/kubernetes#25730 seems to be the right issue, but it looks like it has gone stale. You might reach out to the Kubernetes SIG (@kubernetes/sig-testing) and or @kubernetes/test-infra-maintainers if you're interested in chasing this.

[jchesterpivotal]

@duglin can probably help put you in touch with the right team. IBM has quite a few folks who contribute POWER / PPC work to upstream projects (I've worked with several over the years in my various Cloud Foundry escapades).

A lot of the code contributed gets tested on infrastructure operated by the OSU Open Source Lab.

[duglin]

@jchesterpivotal thanks - @gyliu513 and I are chatting off-line

[vaikas]

/assign @duglin

Are you planning on working on this, or has this been done, or ?

[gyliu513]

We are working at knative/build#514 for all Knative images, and the code is almost finished, but the major concern is how to enable CI/CD in Knative community for POWER, I was checking this.

[akashrv]

@gyliu513 any updates?