start-gke.sh

#!/bin/bash
# @author Alejandro Galue <agalue@opennms.com>
#
# WARNING: For testing purposes only

set -euo pipefail
trap 's=$?; echo >&2 "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR

for cmd in "gcloud" "kubectl"; do
  type $cmd >/dev/null 2>&1 || { echo >&2 "$cmd required but it's not installed; aborting."; exit 1; }
done

PROJECT_ID="${PROJECT_ID-OpenNMS}"
COMPUTE_ZONE="${COMPUTE_ZONE-us-east1-b}"
DOMAIN="${DOMAIN-k8s.agalue.net}"
GCP_NODE_COUNT="${GCP_NODE_COUNT-4}"
GCP_VM_SIZE="${GCP_VM_SIZE-n1-standard-4}"
ROOT_PASSWORD="${ROOT_PASSWORD-P0stgr3s}" # Must match dependencies.postgresql.password

gcloud config set project $PROJECT_ID
gcloud config set compute/zone $COMPUTE_ZONE

REGION="${COMPUTE_ZONE::-2}"

if [[ "${VERSION}" == "" ]]; then
  VERSION=$(gcloud container get-server-config --region $REGION --format "value(channels[1].validVersions[0])")
fi

echo "Starting Kubernetes version $VERSION"
gcloud container clusters create "$USER-opennms" \
  --addons=GcpFilestoreCsiDriver \
  --num-nodes=$GCP_NODE_COUNT \
  --cluster-version=$VERSION \
  --machine-type=$GCP_VM_SIZE

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/cloud/deploy.yaml
kubectl wait pod -l app.kubernetes.io/component=controller --for=condition=Ready --timeout=300s -n ingress-nginx

echo "Starting PostgreSQL instance"
gcloud sql instances create "$USER-opennms" \
  --database-version=POSTGRES_12 \
  --authorized-networks="0.0.0.0/0" \
  --cpu=2 \
  --memory=7680MB \
  --region="$REGION" \
  --root-password="$ROOT_PASSWORD"

PG_ROOT_CA=jks/postgresql-gcloud-ca.crt
gcloud sql instances describe "$USER-opennms" \
  --format "value(serverCaCert.cert)" > $PG_ROOT_CA

PG_IPADDR=$(gcloud sql instances describe "$USER-opennms" --format "value(ipAddresses[0].ipAddress)")
echo "Google SQL for PostgreSQL IP address: $PG_IPADDR"
echo "Root Certificate located at $PG_ROOT_CA"