Change:
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Discussion:
I have some reports of a Node reporting a a resource capacity for cpu as a negative value. Any idea why cpu could report as a negative value? Is this an expected normal outcome? In its current state, it prevents any pods from being scheduled to that Node. Tips on how to debug further are appreciated. - any ideas?
Can you check machineInfo on Cadvisor or kubelet on the node?
a.k.a:
It is a bug in cAdvisor side. I am assigning it to you :-)
here is contents of /proc/cpuinfo Pertinent pieces of a log:
Machine is AWS instance if that matters....
We build the topology from system/cpu info. I think we can return partial topology information and ignore caches if its not present. This isn't a recent change though. Is it happening on just a single machine? I'll file a cAdvisor issue.
Can you link the referenced issue once created?
Re-assigning to since he's working on google/cadvisor
Could be this was caused by getting a Node on EC2 with old hypervisor, and I am the first victim...
That sounds likely. Most of the cache information is there in /proc/cpuinfo. So looks like the sysfs bits are disabled.
Can you try this cadvisor image on your machine and check /api/v1.3/machine output: sudo docker run  --volume=/:/rootfs:ro  --volume=/var/run:/var/run:rw  --volume=/sys:/sys:ro  --volume=/var/lib/docker/:/var/lib/docker:ro  --publish=8080:8080  --detach=true  --name=cadvisor  jnagal/cadvisor:canary
hmm
ah, selinux :( You'll need to run it with --privileged, I think. who's been dealing with it.
No luck with --privileged either on this box...
This has to do with SELinux, I think we had to disable it for this to work (some of our mounts are being denied). We're working on a better solution... This is not a problem in Kubernetes since we don't run Kubelet/cAdvisor in a Docker container.
ok, unfortunately, i have managed to kill docker on the box in question, and i cannot get the daemon to restart right now so I am not sure when that box will be available to debug against again.

I can provide an environment with a similar issue if required.
The fix is checked in to head. Can you build the binary and try?