🐛 Validate MHC MaxUnhealthy strings are percentages #2648
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: JoelSpeed, vincepri The full list of commands accepted by this bot can be found here. The pull request process is described here
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@ncdc I appreciate your concern with this type, I have raised an issue after some discussion yesterday so this one may, hopefully, get fixed kubernetes/kubernetes#89082 |
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What this PR does / why we need it:
It is currently possible to put
{"spec": {"maxUnhealthy": 1}}and{"spec": {"maxUnhealthy": "1"}}and get different behaviour within MHC. Within theappsgroup types, they validate that the string values are valid percentages before persisting, thus allowing the bug that I hit during the demo today to go unnoticed for such a long time.I've added this validation to the webhook for MHC and this should prevent users from hitting this in the future