Juju default registry setting with k8s cloud

juju
1

Hi,

i deployed a charmed k8s and then i added it as a cloud managed by juju by: juju add-k8s cloud-k8s --controller $(juju switch | cut -d: -f1) juju add-model cos cloud-k8s

then i tried to deploy the cos-lite bundle: it worked by creating a modeloperator in the “cos” namespace but it fails fetching the desired image and i’m behind a proxy

the kubectl describe command shows

Normal Scheduled 12m default-scheduler Successfully assigned cos/modeloperator-85896ff44d-bw26h to juju-360533-k8s-8

Warning Failed 11m kubelet Failed to pull image “jujusolutions/jujud-operator:2.9.28”: rpc error: code = Unknown desc = failed to pull and unpack image “docker.io/jujusolutions/jujud-operator:2.9.28”: failed to resolve reference “docker.io/jujusolutions/jujud-operator:2.9.28”: failed to do request: Head https://registry-1.docker.io/v2/jujusolutions/jujud-operator/manifests/2.9.28: dial tcp 3.215.51.67:443: i/o timeout

is there a way to edit the default registry to look for images?

Thank you

2

I know that microk8s can injest an image from a local docker repo:

docker image save <image name> | microk8s ctr image import -

That command dumps the raw image to stdout, and pipes it into an image registry in microk8s.

@kwmonroe does charmed k8s have a similar tool?

3

mmm no i meant a different thing: in charmed k8s (not microk8s) i passed the default registry to kubernetes-control-plane charm in order to fetch images from a local registry (not dockerhub or docker.io). when i use juju to deploy operators it seems going on the public one.

4

The Juju controller has a separate registry, which isn’t necessarily pointed at the registry that the kubernetes-control-plane charm creates. You need to get the image into the Juju controller’s registry. The microk8s command is basically just a wrapper around the commands necessary to do so. I don’t know if there’s a similar shortcut in charmed-k8s.

5

i’m not using microk8s so i don’t even have the cmdline.

How to setup a default container registry for the juju controllers?

6

How to setup a default container registry for the juju controllers?

I do not know, which is why I pinged @kwmonroe. @benhoyt might be able to help you, as well. (Tagging them so that they see this.)

7

hi,

good news it is in containerd config

here you can override docker.io with on prem registry and it seems working so far

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