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 Ollama for local AI models on Linux servers
devopsInstall and configure Uvicorn ASGI server with systemd and reverse proxy for FastAPI applications
hostingInstall and configure Uptime Kuma for website monitoring with SSL and email alerts
monitoringRecently published
Setup Node.js error tracking with Sentry for production monitoring and debugging
monitoringImplement Node.js application monitoring with Prometheus metrics and Grafana dashboards
monitoringImplement OSPF multi-area design with FRRouting and advanced routing policies
networkingConfigure Istio security policies with external authorization services integration
securityImplement Docker network security with custom bridge networks and container isolation
securityConfigure MariaDB Galera cluster 10.11 for multi-master replication with automatic failover
Set up a highly available MariaDB Galera cluster with multi-master replication, automatic failover, and synchronous data replication across multiple database nodes for enterprise applications.
Implement Linux file system encryption with LUKS and cryptsetup
Encrypt Linux file systems and partitions using LUKS (Linux Unified Key Setup) with cryptsetup tools. Configure encrypted storage, manage encryption keys, and implement backup procedures for production environments.
Configure SSH certificate authentication with CA signing for secure server access
Set up SSH certificate-based authentication using a Certificate Authority to eliminate individual key management. Create signed user certificates that provide secure, scalable access control for multiple servers and users.
Monitor OSPF network topology with Prometheus and Grafana dashboards
Set up comprehensive OSPF network monitoring using FRRouting, Prometheus SNMP exporter, and Grafana dashboards to track network topology changes, LSA states, and routing convergence in real-time.
Configure FRRouting route maps and prefix lists for advanced routing policies
Set up FRRouting with route maps and prefix lists to control BGP route advertisement, implement traffic engineering, and create sophisticated routing policies for enterprise networks.
Configure Jetty clustering and session replication for high availability
Set up Eclipse Jetty 12 in a clustered configuration with session replication across multiple nodes. This tutorial covers installation, clustering setup with JDBC session persistence, load balancer integration, and production monitoring for high-availability web applications.
Set up Varnish 7 cluster with load balancing across multiple backends
Configure a high-performance Varnish Cache 7 cluster with intelligent load balancing across multiple web servers, SSL termination, health monitoring, and shared cache synchronization for enterprise web acceleration.
Configure OSSEC active response for automated threat blocking
Set up OSSEC active response to automatically block threats by configuring firewall rules, custom response scripts, and tuning response actions for real-time intrusion prevention.
Configure CockroachDB 24.3 multi-region deployment with high availability clustering
Deploy CockroachDB across multiple regions with automated failover, data locality controls, and production-grade security. Includes replication zones, load balancing, and disaster recovery strategies.
Integrate ModSecurity 3 with SOAR platforms for automated incident response and threat detection
Set up ModSecurity 3 with structured logging, webhook notifications, and API integrations to automatically feed security events into SOAR platforms for real-time threat detection and incident response workflows.
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.
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.
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