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Use a Deployment for kube-apiserver #1455

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Use a Deployment for kube-apiserver #1455

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Commits on Mar 29, 2021

  1. Use a Deployment with AntiAfinnity for kube-apiserver 

    Before a DaemonSet was used to deploy multiple kube-apiservers these
were bound to the hostport 6443, because DaemonSet do not support a
rollover without 1 pos bing unavailable this caused issues with one API
server endpoint becoming unavailable on update.
In systems where no network level loadbalancer of these was implemented
it causes Helm to error as it can no longer check how the rollout of
its update is going causing the kube-apiserver to never be updated.

This changes the multi controller setup to use a Deployment just like a
single controller setup. It uses Pod AntiAffinity rules to spread to all
 controller nodes.

Signed-off-by: Maartje Eyskens <maartje@kinvolk.io>
    @meyskens
    meyskens committed Mar 29, 2021
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