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
Implement Apache load balancing with SSL termination and health checks
hostingSetup 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
securityConfigure ScyllaDB SSL encryption and authentication with certificate management and security hardening
Secure your ScyllaDB cluster with comprehensive SSL/TLS encryption for client connections and inter-node communication. This tutorial covers certificate generation, authentication setup, and production security hardening.
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.
Configure SSH two-factor authentication with Google Authenticator TOTP
Add an extra layer of security to SSH logins by requiring both a password and a time-based one-time password (TOTP) generated by Google Authenticator or compatible apps.
Configure Cassandra SSL encryption and authentication with security hardening
Set up comprehensive SSL/TLS encryption for Apache Cassandra with client-to-node and node-to-node security, certificate management, and production-grade authentication hardening.
Integrate OSSEC with Splunk for centralized security monitoring and log analysis
Set up OSSEC HIDS with Splunk Universal Forwarder to centralize security events, create monitoring dashboards, and enable real-time threat correlation across your infrastructure.
Configure intrusion detection with OSSEC and fail2ban integration
Set up comprehensive intrusion detection by integrating OSSEC HIDS with fail2ban for automated threat response. This advanced configuration provides real-time monitoring, log analysis, and automated IP blocking for enhanced server security.
Configure ModSecurity machine learning anomaly detection for automated threat protection
Set up ModSecurity 3 with machine learning anomaly detection to automatically identify and block unknown attack patterns. This advanced configuration adds intelligent threat protection beyond traditional signature-based rules.
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.
Configure PostgreSQL 17 SSL encryption and advanced security hardening
Set up SSL/TLS encryption, client certificate authentication, and comprehensive security policies for PostgreSQL 17. Includes audit logging, access controls, and firewall configuration for production environments.
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.
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.
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