How are the master components running? Some deployments use static pods on
the master which mean that they can never be relocated to a different
machine. If you are running them as pods in the cluster (i.e. via
self-hosting) then your deployment tool has likely put in the correct
tolerations so that they can continue to run on the master.

In what cases would you set the master to be unschedulable (rather than
using taints)?


On Fri, Sep 14, 2018 at 11:28 AM Yakov Sobolev <ysobo...@ashland.edu> wrote:

> With the master set to unschedulable, do you know what happens if one of
> the pods already running on the master goes down?
>
> Have you seen those system-type pods come back up?
>
> It is OK to run these pods on nodes and not just the master;  reference
> *https://kubernetes.io/docs/concepts/overview/components/*
> <https://kubernetes.io/docs/concepts/overview/components/>) excerpt:
> "...Master components can be run on any machine in the cluster. However,
> for simplicity, set up scripts typically start all master components on the
> same machine, and do not run user containers on this machine.."
>
>
>
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