start.sh

#!/usr/bin/env bash
set -euo pipefail

CLUSTER_NAME="gili"
NAMESPACE="java-html-project"
TRAEFIK_NAMESPACE="traefik"
GATEWAY_API_VERSION="v1.5.1"

command -v kind >/dev/null 2>&1 || { echo "kind is required"; exit 1; }
command -v kubectl >/dev/null 2>&1 || { echo "kubectl is required"; exit 1; }
command -v docker >/dev/null 2>&1 || { echo "docker is required"; exit 1; }

echo "========================"
echo "Build Docker images"
echo "========================"

docker build --no-cache -t java-html-frontend:latest frontend/
docker build --no-cache -t java-html-backend:latest backend/

echo "========================"
echo "Create kind cluster"
echo "========================"

if kind get clusters | grep -q "^${CLUSTER_NAME}$"; then
  echo "Cluster ${CLUSTER_NAME} already exists. Deleting it first..."
  kind delete cluster --name "${CLUSTER_NAME}"
fi

kind create cluster --config cluster/kind-cluster.yaml

echo "========================"
echo "Install Gateway API CRDs"
echo "========================"

kubectl apply -f "https://github.com/kubernetes-sigs/gateway-api/releases/download/${GATEWAY_API_VERSION}/standard-install.yaml"

echo "========================"
echo "Install Traefik Gateway RBAC"
echo "========================"

kubectl apply -f k8s/traefik-gateway-rbac.yaml

echo "========================"
echo "Load images into kind"
echo "========================"

kind load docker-image java-html-frontend:latest --name "${CLUSTER_NAME}"
kind load docker-image java-html-backend:latest --name "${CLUSTER_NAME}"

echo "========================"
echo "Label worker nodes"
echo "========================"

kubectl label node gili-worker tier=frontend --overwrite || true
kubectl label node gili-worker2 tier=backend --overwrite || true
kubectl label node gili-worker3 tier=gateway --overwrite || true

echo "========================"
echo "Install Traefik (manifest-only)"
echo "========================"

kubectl apply -f k8s/traefik-proxy.yaml

echo "========================"
echo "Apply app manifests"
echo "========================"

kubectl apply -f k8s/namespace.yaml
kubectl apply -f k8s/backend-deployment.yaml
kubectl apply -f k8s/backend-service.yaml
kubectl apply -f k8s/frontend-deployment.yaml
kubectl apply -f k8s/frontend-service.yaml

echo "========================"
echo "Apply Gateway API resources"
echo "========================"

kubectl apply -f k8s/gatewayclass.yaml
kubectl apply -f k8s/gateway.yaml
kubectl apply -f k8s/frontend-httproute.yaml
kubectl apply -f k8s/backend-httproute.yaml

echo "========================"
echo "Wait for Traefik"
echo "========================"

kubectl rollout status deployment/traefik -n "${TRAEFIK_NAMESPACE}"

echo "========================"
echo "Wait for app deployments"
echo "========================"

kubectl rollout status deployment/java-backend -n "${NAMESPACE}"
kubectl rollout status deployment/html-frontend -n "${NAMESPACE}"

echo "========================"
echo "Current resources"
echo "========================"

kubectl get nodes
echo
kubectl get pods -n "${TRAEFIK_NAMESPACE}" -o wide
echo
kubectl get pods -n "${NAMESPACE}" -o wide
echo
kubectl get svc -n "${TRAEFIK_NAMESPACE}"
echo
kubectl get svc -n "${NAMESPACE}"
echo
kubectl get gatewayclass
echo
kubectl get gateway -n "${NAMESPACE}"
echo
kubectl get httproute -n "${NAMESPACE}"

echo "========================"
echo "Install Monitoring Stack"
echo "========================"

kubectl apply -f monitoring/namespace.yaml
kubectl apply -f monitoring/prometheus.yaml
kubectl apply -f monitoring/prometheus-rbac.yaml
kubectl apply -f monitoring/grafana.yaml

echo "========================"
echo "Wait for monitoring"
echo "========================"

kubectl rollout status deployment/prometheus -n monitoring
kubectl rollout status deployment/grafana -n monitoring

echo "========================"
echo "Done"
echo "========================"

echo "Add to /etc/hosts:"
echo "127.0.0.1 java-html.local"
echo "127.0.0.1 api.java-html.local"
echo "Then test:"
echo "Frontend: http://java-html.local:8080"
echo "Backend:  http://api.java-html.local:8080"
echo 'curl -H "Host: java-html.local" http://127.0.0.1:8080/resourcelist.html'
echo 'curl -H "Host: api.java-html.local" http://127.0.0.1:8080/'
echo "Prometheus: http://localhost:9090"
echo "Grafana:  http://localhost:3000"
echo "login:"
echo "user: admin"
echo "pass: admin"