create_endpoints

#! /bin/bash
#
# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Create endpoint instances with network testing tools in APP_SUBNET and
# CORE_SUBNET so communication between the endpoints is routed through the
# vpc-link IP router instances.

set -u

: "${NUM_INSTANCES:=1}"
: "${ZONE:=us-central1-a}"
: "${MACHINE_TYPE:=n1-highcpu-16}"

: "${RANDOM_ID:=$RANDOM}"

# The name of one of the subnets listed in app_subnet_cidrs.
: "${APP_NETWORK:=default}"
: "${APP_SUBNET:=default}"
# The name of one of the subnets listed in core_subnet_cidrs
: "${CORE_NETWORK:=default}"
: "${CORE_SUBNET:=default}"
# Used to allow traffic through the firewall.
: "${TAGS:=ssh,icmp,http,vpc-link-endpoint}"

: "${IMAGE_PROJECT:=centos-cloud}"
: "${IMAGE_FAMILY:=centos-7}"

for i in $(seq "${NUM_INSTANCES}"); do
  gcloud compute --project="${SERVICE_PROJECT}" instances create \
    --machine-type="${MACHINE_TYPE}" \
    --image-project="${IMAGE_PROJECT}" \
    --image-family="${IMAGE_FAMILY}" \
    --zone="${ZONE}" \
    --network-interface="no-address,network=${APP_NETWORK},subnet=${APP_SUBNET}" \
    --tags="${TAGS}" \
    --no-service-account \
    --no-scopes \
    "endpoint-vpc-link-local-vpc-${i}-${RANDOM_ID}"
done

for i in $(seq "${NUM_INSTANCES}"); do
  gcloud compute --project="${SERVICE_PROJECT}" instances create \
    --machine-type="${MACHINE_TYPE}" \
    --image-project=centos-cloud \
    --image-family=centos-7 \
    --zone="${ZONE}" \
    --network-interface="no-address,subnet=projects/${HOST_PROJECT}/regions/${ZONE%-*}/subnetworks/${CORE_SUBNET}" \
    --tags="${TAGS}" \
    --no-service-account \
    --no-scopes \
    "endpoint-vpc-link-shared-vpc-${i}-${RANDOM_ID}"
done