Allowing to run tekton on a kubernetes cluster installed on a raspberry pi

[julweber]

Feature request

It would be great to be able to run tekton on top of a kubernetes installation on a raspberry pi (e.g. with k3s installed)

Use case

Being able to run kubernetes on a raspberry pi can be pretty useful to host tiny test environments.
It would be even better if we could automate workloads with tekton on top of that.

Current state

Right now, when i try to install tekton on top of my k3s installation i get the following errors:

$> k get pods -n tekton-pipelines
NAME                                           READY   STATUS             RESTARTS   AGE
tekton-pipelines-controller-756477cd4b-6rfkn   0/1     ImagePullBackOff   0          7m38s
tekton-pipelines-webhook-75545447dd-c2rw7      0/1     ImagePullBackOff   0          7m37s

$>k describe pods -n tekton-pipelines

Name:         tekton-pipelines-controller-756477cd4b-6rfkn
....
  Warning  Failed     6m43s (x4 over 8m6s)  kubelet            Failed to pull image "gcr.io/tekton-releases/github.com/tektoncd/pipeline/cmd/controller:v0.27.3@sha256:364e0fde644f39a8e2c622d545bc792831270e2fb2076a97363b5cc38446138c": rpc error: code = NotFound desc = failed to pull and unpack image "gcr.io/tekton-releases/github.com/tektoncd/pipeline/cmd/controller@sha256:364e0fde644f39a8e2c622d545bc792831270e2fb2076a97363b5cc38446138c": no match for platform in manifest: not found

same goes for tekton-pipelines-webhook

It seems there are no compiled docker images for the arm platform available right now.
Would it be a big task to create arm compatible images for the tekton-pipelines-controller and tekton-pipelines-webhook images?

Kind regard,
Julian

[julweber]

On a further search i found this related topic: #856

[vdemeester]

@julweber is this arm or arm64/aarch64 ? We do ship arm64 images but we don't do on arm yet, mainly due to a problem with alpine on this platform (that might have been fixed now, we should try it back)

[julweber]

@vdemeester thanks for the super fast reply. I am currently using the arm version of raspbian. So i will check with arm64 version sometime this week when i find a free time window and report back. In addition it would anyways be nice to also support arm, as then a raspberry pi 2 will also be supported i guess.

[julweber]

@vdemeester I found some time this morning and reinstalled the pi with the 64bit raspbian version and the k3s installation and the tekton-pipelines-controller and tekton-pipelines-webhook run fine on this 👯

So i expect we can mark this feature request as closed. @vdemeester Maybe we could add that a 64bit arm kernel is required for tekton on raspberry pis somewhere in the documentation?

Kind regards,
Julian

[julweber]

For people stumbling over this:

Tekton requires a 64bit OS for running on a raspberry pi (Sept 2021)

Here you can find the 64bit raspbian images for example: https://downloads.raspberrypi.org/raspios_lite_arm64/images/