409 kubernetes runtime_error ai_generated true

Error from server (Conflict): Operation cannot be fulfilled on statefulsets.apps 'my-statefulset': the object has been modified; please apply your changes to the latest version and try again

ID: kubernetes/statefulset-update-rollback-failed

Also available as: JSON · Markdown · 中文
90%Fix Rate
86%Confidence
1Evidence
2023-02-28First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Kubernetes 1.25 active — — —
Kubernetes 1.26 active — — —
Kubernetes 1.27 active — — —

Root Cause

A concurrent update to the StatefulSet (e.g., by a controller or another user) caused a resource version conflict when trying to apply a change, resulting in a 409 Conflict error.

generic

中文

对StatefulSet的并发更新（例如由控制器或其他用户）导致在应用更改时发生资源版本冲突，从而产生409冲突错误。

Official Documentation

https://kubernetes.io/docs/concepts/architecture/garbage-collection/

Workarounds

  1. 95% success Re-fetch the StatefulSet manifest: `kubectl get statefulset my-statefulset -o yaml > statefulset.yaml`. Edit the file, then apply again: `kubectl apply -f statefulset.yaml`. This ensures you have the latest resource version. 
    Re-fetch the StatefulSet manifest: `kubectl get statefulset my-statefulset -o yaml > statefulset.yaml`. Edit the file, then apply again: `kubectl apply -f statefulset.yaml`. This ensures you have the latest resource version.
  2. 85% success Use `kubectl patch` with a strategic merge patch to update specific fields without full replace: `kubectl patch statefulset my-statefulset --type='strategic' -p '{"spec":{"replicas":3}}'`. This avoids version conflicts by using a merge. 
    Use `kubectl patch` with a strategic merge patch to update specific fields without full replace: `kubectl patch statefulset my-statefulset --type='strategic' -p '{"spec":{"replicas":3}}'`. This avoids version conflicts by using a merge.

中文步骤

  1. 重新获取StatefulSet清单：`kubectl get statefulset my-statefulset -o yaml > statefulset.yaml`。编辑文件，然后重新应用：`kubectl apply -f statefulset.yaml`。这确保您拥有最新的资源版本。
  2. 使用`kubectl patch`进行策略合并补丁以更新特定字段，无需完全替换：`kubectl patch statefulset my-statefulset --type='strategic' -p '{"spec":{"replicas":3}}'`。这通过合并避免版本冲突。

Dead Ends

Common approaches that don't work:

  1. 90% fail

    Force-applying with `--force` flag does not exist for kubectl apply; it only works for `kubectl replace --force` which can cause data loss.

  2. 80% fail

    Retrying the same command without re-fetching the latest object version will hit the same conflict because the resource version is still stale.