How to recover admin kubeconfig from .openshift_install_state.json

Environment

• OpenShift 4.x

Issue

• Installation directory is available but admin kubeconfig generated by installation has been corrupted or is lost.
• I need to recover admin kubeconfig generated during installation.

Resolution

It is required to have jq installed for this solution to work.

It is possible to extract it from install state file .openshift_install_state.json by running this command on the installation directory:

$ cat .openshift_install_state.json | jq -r '.["*kubeconfig.AdminClient"].File.Data' | base64 -d

In case of Agent Based Installation, below command needs to be used.

$ cat .openshift_install_state.json | jq -r '.["*kubeconfig.AgentAdminClient"].File.Data' | base64 -d

Root Cause

Install state file stores many assets used by openshift-install, including the admin kubeconfig it generates.

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