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I'm using CoreOS 773.1.0 with kubernetes. Recently it crashes and printed this trace log:

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The VM is still running but I cannot ssh to it, kubernetes master node declare it as NotReady. I had to turn it off (not shutdown) and start it.

I'm using Hyper-V as hypervisor, the VM is assiged 12GB RAM, 4GB swap, 4 cores CPU. Especially, I got this error after I moved the disk (.vhd file) to new partition.

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This is a known issue to CoreOS 717.3.0 with swap: https://github.com/coreos/bugs/issues/429

于 2015-11-04T21:44:16.123 回答
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Based on the stack trace, it looks like the kernel was trying to free up memory. So, probably the node was under severe memory pressure. Kernel bugs tend to crop up under memory pressure.

It also looks like swap was turned on. Kubernetes developers don't recommend turning on swap.

于 2015-11-04T21:33:23.133 回答
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Looks like Kubelet process is stucked. Do you have kubelet log and at which operation, kubelet is stucked?

于 2015-11-04T21:36:32.283 回答