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authentication-remove-kubeadmin.adoc

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Removing the kubeadmin user

After you define an identity provider and create a new cluster-admin user, you can remove the kubeadmin to improve cluster security.

Warning

If you follow this procedure before another user is a cluster-admin, then {product-title} must be reinstalled. It is not possible to undo this command.
Prerequisites

  • You must have configured at least one identity provider.

  • You must have added the cluster-admin role to a user.

  • You must be logged in as an administrator.

Procedure

  • Remove the kubeadmin secrets:

    $ oc delete secrets kubeadmin -n kube-system