Creating secret Error:
# kubectl create secret generic thanos-objectstorage –from-file=objstore.yaml -n monitoring
Error Messages:

Error from server (InternalError): Internal error occurred: failed calling webhook “rancher.cattle.io”: Post https://rancher-webhook.cattle-system.svc:443/v1/webhook/mutation?timeout=10s: service “rancher-webhook” not found

According to the error report, it may be a problem with rbac, which cannot create

# kubectl get mutatingwebhookconfigurations
NAME                             WEBHOOKS   AGE
mutating-webhook-configuration   7          156d
rancher.cattle.io                2          156d

# kubectl get validatingwebhookconfigurations
NAME                               WEBHOOKS   AGE
rancher.cattle.io                  2          156d
validating-webhook-configuration   7          156d

There are two admission controllers found in the view, both of which are leftover from the previous installation of components

Just Delete it

# kubectl delete mutatingwebhookconfigurations mutating-webhook-configuration
mutatingwebhookconfiguration.admissionregistration.k8s.io "mutating-webhook-configuration" deleted

# kubectl delete mutatingwebhookconfigurations rancher.cattle.io
mutatingwebhookconfiguration.admissionregistration.k8s.io "rancher.cattle.io" deleted

# kubectl delete validatingwebhookconfigurations rancher.cattle.io
validatingwebhookconfiguration.admissionregistration.k8s.io "rancher.cattle.io" deleted

# kubectl delete validatingwebhookconfigurations validating-webhook-configuration
validatingwebhookconfiguration.admissionregistration.k8s.io "validating-webhook-configuration" deleted

Read More:

• [Solved] Error from server (InternalError): error when creating “ingress.yaml”: Internal error occurred: fail
• [Solved] Internal error occurred: failed calling webhook “validate.nginx.ingress.kubernetes.io”:
• [Solved] Rancher Add User Error: x509: certificate has expired Internal error occurred: failed calling webhook “rancherauth.cattle.io”:
• [Solved] Kubernetes Error: failed to list *core.Secret: unable to transform key
• kubernetes Error from server (AlreadyExists): error when creating “kubernetes-dashboard.yaml”: serv
• [Solved] Kubernetes ingress-srv. error: failed calling webhook “validate.nginx.ingress.kubernetes.io”
• IIS 404 The page cannot be displayed because an internal server error has occurred
• [Solved] Error from server (InternalError): an error on the server (““) has prevented the request from suc
• [Solved] Error: Could not get apiVersions from Kubernetes
• Error reporting and resolution of kubernetes installation
• EsgynDB Troubleshooting-ERROR[8837] Internal error occurred.
• [Solved] Eclipse Connect Hadoop error: /An internal error occurred during: “Map/Reduce location status updater“
• k8s kubernetes ingress error: endpoints “default-http-backend“ not found
• jmeter Execute to create Chart Error: An error occurred: Error while processing samples: Mismatch between ……
• [Solved] Could not create cudnn handle: CUDNN_STATUS_INTERNAL_ERROR
• [Solved] Triton-inference-server Start Error: Internal – failed to load all models
• django Internal server error 500 Modify source code to view print errors
• [vite] Internal server error:options.devServer.transformWidthEsBuild is not a function…
• [Solved] ArcGIS Error: Failed to create the site. One or more server machines could not be stopped
• Kubernetes reported an error: matchexpressions: [] v1. Labelselector requirement (NIL)}: field is immutable