Description of problem:
k8's has a missing run-time dependency on cadvisor that is not installed when k8's is installed.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. yum install kubernetes
2. check installation list
cadvisor is an optional requirement. upstream they use the kubelet to launch a cadvisor pod on every node instead of having it installed on every node. I'd like to get there someday.
I'm ok making our cadvisor binary a runtime requirement for now, but I don't know if it's needed. I dropped it since cadvisor sometimes gets itself into a bit of a mess and spins at 100% cpu and we don't have the time to run that down, especially since most of kube works without cadvisor installed...
in the fedora portion of the docs, it is listed as a companion that is brought in by kube.
Hence at least we should update the docs.
So cadvisor is essential for scheduling: https://github.com/GoogleCloudPlatform/kubernetes/issues/160
Rob could please take.
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