Right prompt for kubernetes context in zsh (requires oh-my-zsh)

kube-context-ohmyzsh.sh

local kube_cluster_color="yellow"
local kube_namespace_color="blue"

kube_ctx(){
  kubectl config get-contexts --no-headers $(kubectl config current-context)
}

kube_cluster() {
  kube_ctx | awk '{ print $3 }'
}

kube_namespace() {
  ns=$(kube_ctx | awk '{ print $5 }')
  if [[ $ns != '' ]]; then
    echo ":(%{$fg[$kube_namespace_color]%}$ns%{$fg[$kube_cluster_color]%})"
  fi
}

RPROMPT='%{$fg[$kube_cluster_color]%}$(kube_cluster)$(kube_namespace)%{$reset_color%}'