EDIT 24-11-2017 The solution below did not help me fix freezing cluster. I have identified since then, though, another problem with the setup. Prometheus was eating up all memory of a machine. The link to the article:
Summary If you’ve: - installed Kubernetes on your baremetal machine - that machine is running Ubuntu - and your machine is suddenly unresponsive, then:
Make sure you don’t have docker 1.
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