node-php-devops

A self-hosted server monitoring platform. Three target servers (Alpha, Beta, Gamma) are continuously checked for availability — login to the dashboard to watch their status in real time.

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Stack

Layer	Technology
Frontend	PHP 8.2 + Nginx
Backend	Node.js
Database	MySQL 8.0
Cache	Redis 7
Orchestration	Docker Swarm
CI/CD	GitLab CI
Monitoring	Prometheus + Grafana + Node Exporter + cAdvisor

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Services

Service	Description
frontend-web	Nginx — serves PHP files and proxies /api/ to backend
frontend-php	PHP-FPM — renders dashboard and login page
backend	Node.js REST API — auth, server management, status
worker	Node.js — pings target servers every 15 seconds
mysql	Stores users, servers, check history
redis	Caches latest server statuses
target-alpha/beta/gamma	Nginx containers acting as monitored servers
prometheus	Scrapes metrics from backend, node-exporter, cAdvisor
grafana	Visualizes infrastructure metrics
node-exporter	Sends host metrics
cadvisor	Sends info about containers

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Quick Start

Prerequisites

• (You can setup new server using ansible playbook)
• Docker with Swarm mode enabled
• GitLab Runner with devops tag registered on your server

1. Create overlay network

docker network create --driver overlay --attachable app-network

2. Create secrets

mkdir -p secrets
echo "your_db_password" > secrets/db_password.txt
echo "your_db_user"     > secrets/db_user.txt
echo "your_db_name"     > secrets/db_name.txt
echo "your_jwt_secret"  > secrets/jwt_secret.txt
echo "your_gf_password" > secrets/gf_password.txt

3. Deploy

docker stack deploy -c docker-stack.yml uptime-stack
docker stack deploy -c monitoring-stack.yml monitoring

4. Access

Service	URL
Dashboard	http://your-ip
Grafana	http://your-ip:3000
Prometheus	http://your-ip:9090

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CI/CD

Push to main → GitLab CI automatically:

1. Builds backend and frontend images
2. Pushes them to GitLab Container Registry
3. Deploys updated stack via Docker Swarm (CI/CD doesnt deploy nor build monitoring stack)

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Default credentials

username: zweihaka
password: password

Change the password hash in db/init.sql before deploying to production.