Kubernetes add user

This is a quick and dirty script to create a kubernetes user.

Usage

./add-user.sh $USERNAME

If $USERNAME is omitted, it defaults to the name of the current user.

The script does the following:

• Creates a 4096-bit RSA key for the user
• Creates and approves a CSR for the user
• Creates a namespace for the user (defaults to ${USER}-ns)
• Creates a role+rolebinding for the user giving read-write access to all resources in the above namespace
• Creates a kubeconfig for the user, with all certificates embedded