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node-controller: Support an annotation to hold updates #2163

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node-controller: Support an annotation to hold updates #2163

wants to merge 1 commit into from

Commits on Oct 15, 2020

  1. node-controller: Support an annotation to hold updates 

    Today the MCO arbitrarily chooses a node to update from the candidates.
We want to allow admins to avoid specific nodes entirely.

(Aside: This replaces the defunct etcd-specific ordering code that
 we didn't end up using)

Add an annotation `machineconfiguration.openshift.io/hold` that allows
an external controller (and/or human) to avoid specific nodes.

Related: openshift#2059
    @cgwalters
    cgwalters committed Oct 15, 2020
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