embed some kube context in your zsh shell

kube-zsh-rprompt.zsh

kubeconfig="${KUBECONFIG}"
if [[ -z "${kubeconfig}" ]]; then
  kubeconfig="$(mktemp):$(ls -1 ${HOME}/.kube/*.yaml | tr $'\n' ':')${HOME}/.kube/config"
fi
export KUBECONFIG="${kubeconfig}"

function zsh_kube_prompt() {
  zsh_kube_context=$(kubectl config current-context)
  zsh_kube_authinfo=$(kubectl config get-contexts "${zsh_kube_context}" --no-headers | awk '{print $4}')
  zsh_kube_ns=$(kubectl config get-contexts "${zsh_kube_context}" --no-headers | awk '{print $5}')
  if [[ -z "${zsh_kube_ns}" ]]; then
    zsh_kube_ns="default"
  fi

  echo "(${zsh_kube_authinfo}@${zsh_kube_context}/${zsh_kube_ns})"
}

RPROMPT='$(zsh_kube_prompt)'