How to re-create kubeconfig for system:admin user in OpenShift 4

Solution Verified - Updated -

Issue

  • kubeconfig file is missing and it is needed to recreate it and set client certificate authentication for system:admin.
  • It is possible to recreate the installation kubeconfig file in RHOCP 4?

  • Impossible to access the cluster with the original kubeconfig file for certificate error:

    $ oc get nodes --kubeconfig=<install directory>/auth/kubeconfig
Unable to connect to the server: x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kube-apiserver-lb-signer")

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.6+

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