Infrastructure tutorials
Production-grade guides for Linux, servers, security and performance. Copy-paste commands, multi-distro support, written by engineers who run this in production.
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Linux
System administration, shell scripting, package management
Hosting & Servers
Web servers, reverse proxies, SSL, domains
Security
Firewalls, hardening, encryption, access control
Performance
Caching, optimization, profiling, load testing
Databases
MySQL, PostgreSQL, Redis, backups, replication
Networking
DNS, load balancing, VPN, TCP/IP, routing
DevOps
CI/CD, Docker, Kubernetes, automation
Monitoring
Logging, alerting, metrics, observability
Most viewed
Install and configure Deno for web development with systemd and reverse proxy
hostingInstall and configure Caddy web server with automatic HTTPS and reverse proxy
hostingInstall and configure Uvicorn ASGI server with systemd and reverse proxy for FastAPI applications
hostingInstall and configure Ollama for local AI models on Linux servers
devopsInstall and configure Uptime Kuma for website monitoring with SSL and email alerts
monitoringRecently published
Configure custom SNMP MIBs for vendor-specific monitoring with SNMP v2c and v3
monitoringImplement NGINX Plus active health checks for enterprise environments
hostingSetup Prometheus Blackbox Exporter for endpoint monitoring with SSL and alerting
monitoringConfigure Prometheus alerting with AlertManager notifications and webhook integration
monitoringConfigure Elasticsearch cross-cluster replication for disaster recovery
databasesConfigure logrotate with Elasticsearch and Kibana integration for automated log management
Set up automated log rotation with Elasticsearch index lifecycle management and Kibana dashboard integration for scalable log management. Configure retention policies and monitoring alerts for production environments.
Setup log aggregation with rsyslog and logrotate for centralized system monitoring
Configure rsyslog for centralized log collection across servers, implement advanced logrotate policies for automated retention, and set up remote log shipping with filtering for comprehensive system monitoring and audit compliance.
Configure SSH key authentication and security hardening
Replace password authentication with SSH keys and implement comprehensive security hardening including fail2ban, audit logging, and access controls to protect your Linux servers from unauthorized access and brute force attacks.
Monitor Node.js applications with Prometheus and Grafana for comprehensive performance metrics
Set up comprehensive Node.js application monitoring with Prometheus metrics collection and Grafana dashboards. Configure alerting rules for performance issues, memory usage, and error tracking in production environments.
Set up ELK Stack for centralized ModSecurity log analysis and monitoring
Configure Elasticsearch 8, Logstash 8, and Kibana 8 to collect, parse, and visualize ModSecurity web application firewall logs from multiple servers for centralized security monitoring and threat detection.
Implement network security policies with iptables and firewalld for enterprise infrastructure protection
Configure enterprise-grade network security with iptables and firewalld, implementing zone-based policies, advanced rules, and comprehensive logging for production infrastructure protection.
Configure container resource limits with Docker and systemd for production workloads
Learn to set memory, CPU, and I/O limits for Docker containers using both Docker runtime constraints and systemd service limits. Master cgroups v2 integration for bulletproof resource management in production environments.
Setup Tailscale site-to-site VPN with multiple exit nodes for redundancy
Configure a resilient Tailscale mesh VPN with multiple exit nodes for high availability site-to-site connectivity. Set up subnet routing, automatic failover, and monitoring across distributed networks.
Set up centralized security monitoring with ClamAV 1.4 and Elasticsearch 8
Build a comprehensive security monitoring infrastructure with ClamAV antivirus scanning, Elasticsearch log storage, and automated threat detection. This setup provides real-time malware scanning with centralized log aggregation for enterprise security compliance.
Configure ClamAV integration with web servers and email systems for automated threat detection
Integrate ClamAV antivirus with NGINX, Apache, Postfix and Dovecot for automated file scanning and email protection. Set up real-time threat detection with monitoring and alerting.
Setup Gunicorn blue-green deployment with NGINX for zero downtime Python applications
Configure zero-downtime deployments for Python web applications using Gunicorn blue-green deployment strategy with NGINX reverse proxy, automated health checks, and rollback mechanisms for production reliability.
Configure Tailscale monitoring with Prometheus and Grafana dashboards
Set up comprehensive monitoring for your Tailscale mesh VPN network using Prometheus metrics collection and Grafana dashboards to track node connectivity, traffic patterns, and performance across your distributed infrastructure.
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