karmada/docs/upgrading/v1.0-v1.1.md

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# v1.0 to v1.1
Follow the [Regular Upgrading Process](./README.md).
## Upgrading Notable Changes
The validation process for `Cluster` objects now has been moved from `karmada-webhook` to `karmada-aggregated-apiserver`
by [PR 1152](https://github.com/karmada-io/karmada/pull/1152), you have to remove the `Cluster` webhook configuration
from `ValidatingWebhookConfiguration`, such as:
```diff
diff --git a/artifacts/deploy/webhook-configuration.yaml b/artifacts/deploy/webhook-configuration.yaml
index 0a89ad36..f7a9f512 100644
--- a/artifacts/deploy/webhook-configuration.yaml
+++ b/artifacts/deploy/webhook-configuration.yaml
@@ -69,20 +69,6 @@ metadata:
labels:
app: validating-config
webhooks:
- - name: cluster.karmada.io
- rules:
- - operations: ["CREATE", "UPDATE"]
- apiGroups: ["cluster.karmada.io"]
- apiVersions: ["*"]
- resources: ["clusters"]
- scope: "Cluster"
- clientConfig:
- url: https://karmada-webhook.karmada-system.svc:443/validate-cluster
- caBundle: {{caBundle}}
- failurePolicy: Fail
- sideEffects: None
- admissionReviewVersions: ["v1"]
- timeoutSeconds: 3
- name: propagationpolicy.karmada.io
rules:
- operations: ["CREATE", "UPDATE"]
```
Otherwise, when joining clusters(or updating Cluster objects) the request will be rejected with following errors:
```
Error: failed to create cluster(host) object. error: Internal error occurred: failed calling webhook "cluster.karmada.io": the server could not find the requested resource
```
Please refer to [v1.1.0 Release Notes](https://github.com/karmada-io/karmada/releases/tag/v1.1.0) for more details.