I have installed Kubernetes on CoreOS under VirtualBox Vagrant. I notice that when running, each of the cluster nodes uses 100% CPU and the journalctl shows the same message being repeated:
Couldn't read file: /tmp/proxy_config : open /tmp/proxy_config: no such file or directory. This seems to be related to the kubernetes-proxy.service. When I stop the service the CPU usage goes to normal and the logging stops. I read somewhere that the proxy is required on the minions not the master, but I lack understanding of the overall architecture to really know what this means. I guess, my question is: is the proxy required to run Kubernetes on CoreOS and if so, is there some configuration that must happen to make this problem go away?
The proxy is required on the nodes(minion). Here is a link to Google's current design documents to help: https://github.com/GoogleCloudPlatform/kubernetes/blob/master/DESIGN.md