Disk usage metrics for containerd

[ribbybibby]

When switching from docker to containerd as my container runtime in Kubernetes, I noticed that container_fs_usage_bytes metrics were no longer being exported for my containers.

It looks like disk usage metrics aren't implemented for containerd, as noted by this comment: https://github.com/google/cadvisor/blob/v0.38.6/container/containerd/handler.go#L164-L165.

Disk usage is a pretty important metric to monitor, so I think, if possible, this should be added.

[elcomtik]

I have experienced the same issue.

It looks like disk usage metrics aren't implemented for containerd, as noted by this comment: https://github.com/google/cadvisor/blob/v0.38.6/container/containerd/handler.go#L164-L165.

There is some conversation about these metrics containerd/containerd#678. I suppose that contained provide this information.

[yyrdl]

PR was submited . #2872

[jepio]

PR #2872 was closed, in favor of #2956, which was merged and subsequently reverted in #2964. The result is that these metrics are not available.

Is someone working on an alternative approach?

[sarbajitc]

Is there any timeline for a fix of this issue?

[baasumo]

+1 on looking for any update or timeline regarding this issue - these metrics are pretty important for observability and workload behavior.

[fernandesnikhil]

Adding onto this ticket since we're blocked on switching to the containerd CRI without these metrics. We have alerting around ephemeral file system usage that would break if cAdvisor doesn't collect these from containerd.