Kubernetes: Show all load balancer object types with it external IP and ports for a given or all namespaces

klbs.bash

klbs() {
  local namespace_flag
  if [ -n "$1" ]; then
    namespace_flag="-n $1" # Set -n <namespace>, if a namespace was given
  else
    namespace_flag="--all-namespaces" # Default: Show all namespaces
  fi

  {
    printf "NAMESPACE\tNAME\tEXTERNAL-IP\tPORT(S)\n"
    kubectl get services $namespace_flag \
      -o jsonpath='{range .items[?(@.spec.type=="LoadBalancer")]}{.metadata.namespace}{"\t"}{.metadata.name}{"\t"}{.status.loadBalancer.ingress[0].ip}{"\t"}{range .spec.ports[*]}{.port}{", "}{end}{"\n"}{end}' \
      | sed 's/, $//'
  } | column -s $'\t' -t
}