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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Most viewed

Configure Linux system time synchronization with chrony and NTP hardening

linux
856

Set up Node.js application security with Helmet and rate limiting

security
735

Install and configure PostgreSQL 17 with performance tuning and security hardening

databases
701

Install and configure Caddy web server with automatic HTTPS and reverse proxy

hosting
701

Configure network interface monitoring with ICMP ping and connectivity testing

networking
700

Recently published

Implement network security policies with iptables and firewalld for enterprise infrastructure protection

security
19 minutes ago

Deploy FastAPI applications with Docker Compose and production optimization

devops
21 minutes ago

Implement container security with AppArmor and seccomp profiles

security
24 minutes ago

Configure container resource limits with Docker and systemd for production workloads

devops
26 minutes ago

Setup Tailscale site-to-site VPN with multiple exit nodes for redundancy

networking
5 hours ago
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performance Intermediate

Optimize MySQL query performance with indexes and query profiling for high-traffic applications

Learn how to dramatically improve MySQL query performance using proper indexing strategies, query profiling tools, and InnoDB optimization techniques. This tutorial covers slow query log analysis, EXPLAIN plan interpretation, and memory tuning for production databases.

45 min 6 distros 337 views
security Intermediate

Configure NGINX rate limiting and DDoS protection with advanced security rules

Learn to configure production-grade NGINX rate limiting and DDoS protection with multiple security zones, advanced rules, and real-time monitoring to protect your web applications from malicious traffic and resource exhaustion attacks.

45 min 4 distros 362 views
linux Intermediate

Optimize Linux system performance with kernel parameters and system tuning

Learn production-grade Linux performance optimization through systematic kernel parameter tuning, memory management, I/O optimization, and network stack configuration to maximize system throughput and responsiveness.

45 min 6 distros 455 views
monitoring Intermediate

Install and configure OpenTelemetry Collector for distributed tracing and observability

Set up OpenTelemetry Collector to gather distributed traces and metrics from your applications. Configure receivers, processors, and exporters for comprehensive observability with Jaeger and Prometheus integration.

45 min 6 distros 574 views
security Intermediate

Install and configure Fail2ban with advanced rules and email alerts

Set up Fail2ban intrusion prevention system with custom SSH, web server, and application protection rules. Configure email notifications and advanced filtering to automatically block malicious IP addresses based on log patterns.

45 min 6 distros 449 views
networking Intermediate

Install and configure HAProxy for high availability load balancing

Set up HAProxy with SSL termination, keepalived for high availability, and comprehensive health checks to distribute traffic across multiple backend servers with automatic failover.

45 min 6 distros 488 views

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