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Update content/en/docs/concepts/workloads/controllers/deployment.md 

Co-authored-by: Tim Bannister <tim@scalefactory.com>
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adriananeci 2025-02-21 16:34:40 +02:00 committed by GitHub
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@ -1079,13 +1079,15 @@ Explicitly setting this field to 0, will result in cleaning up all the history o
thus that Deployment will not be able to roll back.
{{< /note >}}
{{< note >}}
The cleanup will ONLY start after a deployment reaches a
[complete state](/docs/concepts/workloads/controllers/deployment/#complete-deployment)
For example, if pods are crash looping, and there are multiple rolling updates
The cleanup only starts **after** a Deployment reaches a
[complete state](/docs/concepts/workloads/controllers/deployment/#complete-deployment).
If you set `.spec.revisionHistoryLimit` to 0, any rollout nonetheless triggers creation of a new
ReplicaSet before Kubernetes removes the old one.
Even with a non-zero revision history limit, you can have more ReplicaSets than the limit
you configure. For example, if pods are crash looping, and there are multiple rolling updates
events triggered over time, you might end up with more ReplicaSets than the
`.spec.revisionHistoryLimit` because the deployment never reaches a complete state.
{{< /note >}}
`.spec.revisionHistoryLimit` because the Deployment never reaches a complete state.
## Canary Deployment