cadvisor returns empty image

[dashie]

Environmental Info:
K3s Version: v1.29.2+k3s1 (86f1021)
OS: Ubuntu 22.04.4 LTS

Describe the bug:

Installed k3s on ubuntu with docker. When I call:

kubectl get --raw /api/v1/nodes/<node>/proxy/metrics/cadvisor

the metrics returned have all image empty (image="")

[brandond]

Have you tested to see if this works with a standalone deployment of cri-dockerd? The version of cri-dockerd embedded in k3s is fairly up to date, its possible this is an upstream issue.

What version of docker are you using?

[dashie]

Have you tested to see if this works with a standalone deployment of cri-dockerd? The version of cri-dockerd embedded in k3s is fairly up to date, its possible this is an upstream issue.

What version of docker are you using?

You are suggesting me to not to use docker?

And to install k3s in this way?

curl -sfL https://get.k3s.io | INSTALL_K3S_CHANNEL=latest sh -s -

If so, I confirm you. If I don'r use docker-ce, it works!
But how can I make it works with docker-ce?

[brandond]

You are suggesting me to not to use docker?

No, I was asking what happens if you install cri-dockerd on your own, and use that as the --container-runtime-endpoint instead of using the cri-dockerd built into k3s.

Is there some particular reason you're required to use docker, though?

[dashie]

Is there some particular reason you're required to use docker, though?

The reason is that docker-ce was already installed and used (by other) on that server. And I just wanted to add k3s.
Anyway I can confirm, if I remove docker-ce and I use the embedded k3s docker, everything works on cadvisor side.
With docker-ce some label are missing.

[jiayu997]

@dashie k3s has embedded docker ? i also meet this problem

[brandond]

He means containerd.

[jiayu997]

@brandond = =、thanks

[dashie]

@dashie k3s has embedded docker ? i also meet this problem

See here https://docs.k3s.io/advanced#using-docker-as-the-container-runtime.

I was having the problem using "docker" (activated with the option --docker). Using "containerd" I have no problem. But I would still like to understand why.

[jiayu997]

@dashie k3s has embedded docker ? i also meet this problem

See here https://docs.k3s.io/advanced#using-docker-as-the-container-runtime.

I was having the problem using "docker" (activated with the option --docker). Using "containerd" I have no problem. But I would still like to understand why.

i should try k8s < 1.24, maybe it works

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