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Added section for breaking changes related to version skew and suspend

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using cli.

Signed-off-by: Travis Mattera <travis@mattera.io>
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Travis Mattera
2023-11-06 10:52:19 -08:00
parent 1ba44502c8
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rfcs/0006-alternative-suspend-control/README.md
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@@ -135,6 +135,22 @@ The suspend annotation would by default be set to a generic value. An optional
cli flag (eg `--message`) would support setting the suspended annotation value
to a user-specified string.
## Breaking Changes - Version Skew and Suspend Honoring
An edge case exists under these proposed changes with regard to suspending
objects using a new version of the cli while the controllers are running older
versions. Specifically, the user suspends the object with the cli which adds
the suspend annotation but leaves the `.spec.suspend` field unmodified. The
user sees the object is suspended by the cli output. The controllers however do
not recognize the object is suspended.
A potential scenario where this case becomes very damaging is during git repo
refactoring where users suspend objects, relocate the manifest sources and
related references, and resume. The operation is meant to be a no-op. However
with such a version skew and `Kustomizations` set with `.spec.prune` enabled
major workload disruption could occur.
## Implementation History
tbd