create_external_service.sh

#!/bin/bash

NAME=$1
HOST=$2
PORT=$3

if [ -z "$3" ]; then
    echo "$0 [name] [ip] [port]"
    exit 1
fi

cat yaml/template.external_endpoints.yml \
    | sed "s/ENDPOINTS_NAME/${NAME}/g" \
    | sed "s/ENDPOINTS_IP/${HOST}/g" \
    | sed "s/ENDPOINTS_PORT/${PORT}/g" \
    | kubectl apply -f -

cat yaml/template.external_service.yml \
    | sed "s/SERVICE_NAME/${NAME}/g" \
    | sed "s/SERVICE_IP/${HOST}/g" \
    | sed "s/SERVICE_PORT/${PORT}/g" \
    | kubectl apply -f -

endpoint.yml

kind: Endpoints
apiVersion: v1
metadata:
  name: ENDPOINTS_NAME
subsets:
  - addresses:
      - ip: ENDPOINTS_IP
    ports:
      - port: ENDPOINTS_PORT

service.yml

kind: Service
apiVersion: v1
metadata:
  name: SERVICE_NAME
spec:
  ports:
  - protocol: TCP
    port: SERVICE_PORT
    targetPort: SERVICE_PORT