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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50 guides

Linux

System administration, shell scripting, package management

66 guides

Hosting & Servers

Web servers, reverse proxies, SSL, domains

147 guides

Security

Firewalls, hardening, encryption, access control

45 guides

Performance

Caching, optimization, profiling, load testing

99 guides

Databases

MySQL, PostgreSQL, Redis, backups, replication

62 guides

Networking

DNS, load balancing, VPN, TCP/IP, routing

161 guides

DevOps

CI/CD, Docker, Kubernetes, automation

174 guides

Monitoring

Logging, alerting, metrics, observability

Most viewed

Install and configure Deno for web development with systemd and reverse proxy

hosting

10,963

Fix apt update E: Repository no longer has a Release file

linux

8,155

Install and configure Uptime Kuma for website monitoring with SSL and email alerts

monitoring

6,870

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

hosting

6,040

Install and configure TimescaleDB with PostgreSQL for high-performance time-series data

databases

5,514

Recently published

Check disk space usage on Linux with df and du commands

linux

5 hours ago

Find and kill processes using a specific port on Linux

linux

4 days ago

Fix PostgreSQL FATAL sorry, too many clients already

linux

1 week ago

Configure Istio multi-cluster disaster recovery and automated failover

devops

2 weeks ago

Set up automated MariaDB Galera cluster backups with compression

databases

1 month ago

"iptables" × Clear all

devops Intermediate

Install and configure Kubernetes cluster with kubeadm and security hardening

Set up a production-ready Kubernetes cluster using kubeadm with proper security hardening, RBAC configuration, and CNI networking. Includes worker node setup and verification steps.

45 min 6 distros 1,976 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 2,633 views

networking Intermediate

Install and configure WireGuard VPN server with client management

Set up a secure WireGuard VPN server with automated client management, including key generation, firewall configuration, and traffic routing for remote access.

25 min 6 distros 2,297 views

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