New set_ingress.sh script to add ingress to /etc/hosts

#!/bin/bash

IP=""

NAMESPACE=""

source $(dirname "$(readlink -f "$0")")/variables.sh

help() {

  echo "Usage: $1 <options>"

  echo "       -i : IP to use"

  echo "       -n : Namespace to get ingress information"

  echo "       -k : Kubeconfig to be used"

  echo "       -h : show this help"

  exit 1

}

# Read params

while getopts ":i:n:k:h" opt; do

  case $opt in

    i)

      IP="$OPTARG"

      ;;

    n)

      NAMESPACE="$OPTARG"

      ;;

    k)

      KUBECONFIG="$OPTARG"

      if [ -z "$KUBECONFIG" ]; then

        echo "The variable KUBECONFIG is empty. Using default k8s environment..."

      else

        KUBECONFIG="--kubeconfig $KUBECONFIG"

        echo "The variable KUBECONFIG is not empty. Its value is: $KUBECONFIG"

      fi

      ;;

    h)

      help

      ;;

    \?)

      echo "Not valid option: -$OPTARG" >&2

      help

      ;;

    :)

      echo "The -$OPTARG option requires an argument." >&2

      help

      ;;

  esac

done

if [[ -n "$NAMESPACE" && -n "$IP" ]]

then

  echo "IP: $IP and namespace: $NAMESPACE"

elif [[ -n "$NAMESPACE" ]]; then

  if [[ -n "$K8S_IP" ]]; then

    IP=$K8S_IP

    echo "Using K8S_IP found. IP: $IP and namespace: $NAMESPACE"

  fi

else

  echo "IP ($IP) and NAMESPACE ($NAMESPACE) must be set"

  exit -1

fi

kubectl $KUBECONFIG -n $NAMESPACE get ing|grep -v NAME|awk "{print \"$IP \"\$3}" > /etc/hosts