the object has been modified ☸️ Kubernetes

Operation cannot be fulfilled on deployments.apps "x": the object has been modified; please apply your changes to the latest version and try again

Optimistic-concurrency conflict: the object changed (new resourceVersion) between when you read it and when you tried to update it.

Seen on: Kubernetes

Meaning

Controllers, HPAs and humans all update objects; each update must carry the latest resourceVersion. kubectl edit/replace with stale copies and operators without retry logic hit this. It’s usually transient — retry with a fresh read.

Common causes

  • Another controller updated the object at the same time (HPA, operator)
  • kubectl replace/edit with an old copy
  • Custom controller not retrying on conflict

⚡ Quick fix

  1. Re-run the command (it reads the latest version)
  2. Use kubectl apply or patch instead of replace
  3. In controllers, use retry.RetryOnConflict

Detailed fix by platform

Go

  1. bash
    err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
    d, _ := client.AppsV1().Deployments(ns).Get(ctx, name, metav1.GetOptions{})
    d.Spec.Replicas = &n
    _, err := client.AppsV1().Deployments(ns).Update(ctx, d, metav1.UpdateOptions{})
    return err
})

How to diagnose

  1. Writers — Who else updates the object?
  2. Command — replace vs apply/patch

🔧 Still not fixed?

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