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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Install and configure CockroachDB cluster with high availability and distributed SQL

databases
425

Install and configure ArgoCD for GitOps continuous deployment with RBAC and SSL

devops
424

Install and configure PostgreSQL 17 with performance tuning and security hardening

databases
411

Install and configure Loki for centralized log aggregation with Grafana integration

monitoring
404

Install and configure WireGuard VPN server with client management

networking
403

Recently published

Configure Nagios SNMP monitoring for network devices with automated discovery and templates

monitoring
7 hours ago

Integrate Elasticsearch 8 with Prometheus monitoring and Grafana dashboards

monitoring
7 hours ago

Set up NGINX web application firewall with ModSecurity 3 and OWASP Core Rule Set

security
7 hours ago

Configure NGINX reverse proxy with advanced caching and load balancing

hosting
7 hours ago

Configure Netdata alerts with Slack and Microsoft Teams for real-time monitoring notifications

monitoring
17 hours ago
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linux Intermediate

Configure Linux CPU and process scheduling with systemd and nice priorities for workload optimization

Learn to optimize Linux workloads by configuring CPU scheduling policies, setting process priorities with nice and ionice commands, and implementing systemd service limits for better resource allocation and performance.

25 min 6 distros 265 views
networking Intermediate

Configure network bonding and VLAN tagging for high availability and network segmentation

Set up network bonding for link aggregation and failover protection while implementing VLAN tagging for network segmentation. This tutorial covers bond configuration with Netplan and NetworkManager across multiple interfaces.

45 min 6 distros 270 views
networking Advanced

Set up BGP routing with FRRouting for dynamic network routing and failover

Configure BGP routing with FRRouting to implement dynamic network routing, automatic failover, and high availability for enterprise network infrastructure with route filtering and policy management.

45 min 6 distros 277 views
linux Intermediate

Configure Linux system resource limits with systemd and ulimit for application performance

Learn to configure Linux system resource limits using systemd, ulimit, and /etc/security/limits.conf to prevent application failures from resource exhaustion. Master per-user, per-service, and system-wide limits for optimal performance.

25 min 6 distros 276 views
hosting Intermediate

Install and configure OpenLiteSpeed web server with SSL and PHP for high-performance hosting

Set up OpenLiteSpeed web server with SSL certificates, PHP LSAPI, and built-in caching for superior performance compared to Apache and Nginx. Includes security hardening and monitoring configuration.

45 min 6 distros 211 views
linux Intermediate

Configure Linux system firewall with nftables and security hardening

Learn how to configure nftables firewall with advanced security rules, rate limiting, and fail2ban integration. This tutorial covers migration from iptables, logging configuration, and production-grade security hardening for modern Linux systems.

45 min 6 distros 149 views
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 124 views
hosting Intermediate

Install and configure Lighttpd web server with SSL and FastCGI for lightweight hosting

Set up Lighttpd web server with SSL certificates from Let's Encrypt and FastCGI support for PHP applications. Configure virtual hosts, optimize performance, and implement security hardening for production hosting.

25 min 6 distros 160 views
performance Intermediate

Optimize Linux I/O performance with kernel tuning and storage schedulers for high-throughput workloads

Learn how to optimize Linux I/O performance through kernel parameter tuning, storage scheduler configuration, and filesystem optimizations. This tutorial covers scheduler selection, queue depth tuning, and performance monitoring for high-throughput applications.

25 min 6 distros 155 views
linux Intermediate

Configure Linux disk usage monitoring and automated cleanup with systemd timers

Set up automated disk monitoring, log cleanup, and email alerts using systemd timers to prevent disk space issues. Configure log rotation, temporary file cleanup, and threshold-based alerting for production systems.

25 min 6 distros 272 views
performance Intermediate

Configure Linux memory management and swap optimization for high-performance workloads

Optimize Linux memory subsystem performance through advanced swap configuration, virtual memory tuning, and memory compression techniques. Learn to configure transparent huge pages, zram, and application-specific memory settings for high-performance workloads.

25 min 6 distros 143 views
linux Intermediate

Configure automatic security updates with unattended-upgrades and email notifications

Set up automated security patching on Linux servers with unattended-upgrades and dnf-automatic. Configure email notifications, update policies, and monitoring to keep your systems secure while maintaining control over critical services.

25 min 6 distros 279 views

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