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 Deno for web development with systemd and reverse proxy

hosting
10,604

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

monitoring
6,459

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

linux
5,895

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

hosting
5,531

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

databases
5,063

Recently published

Set up automated MariaDB Galera cluster backups with compression

databases
1 week ago

Configure MariaDB ColumnStore for high-performance analytics workloads

databases
1 week ago

Implement Kibana 8 custom threat hunting dashboards for security incident response

monitoring
1 week ago

Configure Logstash 8 security pipelines with threat intelligence enrichment

monitoring
3 weeks ago

Configure Ansible Vault integration with HashiCorp Vault for secrets management

devops
3 weeks ago
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security Intermediate

Set up Vault as a PKI certificate authority with SSL automation and intermediate CA

Build a production-grade PKI infrastructure using HashiCorp Vault with root and intermediate certificate authorities. Enable automated SSL certificate generation and renewal for your applications with RBAC policies.

45 min 4 distros 1,242 views
security Advanced

Secure Docker containers with Traefik reverse proxy and Authelia authentication

Set up a production-grade security stack using Traefik v3 reverse proxy with SSL automation and Authelia for multi-factor authentication. This tutorial covers Docker hardening, LDAP integration, and container security monitoring.

45 min 4 distros 1,217 views
databases Intermediate

Monitor PostgreSQL performance with pg_stat_statements extension for query analysis and optimization

Set up pg_stat_statements extension to collect query statistics, analyze slow queries, and optimize PostgreSQL database performance with automated monitoring alerts.

25 min 4 distros 1,189 views
databases Intermediate

Install and configure PgBouncer for PostgreSQL connection pooling with performance optimization

Set up PgBouncer to efficiently manage PostgreSQL connections, reduce database load, and improve application performance with proper authentication and monitoring.

25 min 4 distros 1,125 views
monitoring Intermediate

Set up Prometheus Blackbox Exporter for uptime monitoring with SSL and alerting

Configure Prometheus Blackbox Exporter to monitor website availability, SSL certificate expiry, and HTTP response times with comprehensive Grafana dashboards and alert rules.

45 min 4 distros 1,144 views
monitoring Intermediate

Set up Docker Compose monitoring stack with Prometheus and Grafana for AI model performance tracking

Deploy a complete monitoring stack using Docker Compose with Prometheus for metrics collection and Grafana for visualization, specifically configured to track AI model performance metrics like inference latency, throughput, and resource utilization.

45 min 4 distros 1,284 views
security Intermediate

Set up SSH bastion host with jump server configuration for secure network access

Configure an SSH bastion host to secure access to private networks, implementing jump server functionality with key-based authentication and access controls for enhanced security.

25 min 4 distros 1,097 views
networking Intermediate

Configure HAProxy SSL termination with Let's Encrypt and security headers

Set up HAProxy 2.8 with SSL termination, automatic Let's Encrypt certificates, and security headers for high-performance load balancing with HTTPS offloading and automated certificate renewal.

35 min 4 distros 1,014 views
linux Advanced

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

Resolve apt update errors when repositories lose Release files due to expired GPG keys, discontinued repos, or corrupted package manager state. Includes diagnostics, recovery methods, and prevention strategies.

25 min 7 distros 5,895 views
linux Beginner

Configure Linux file and directory ownership with chown and security best practices

Learn to properly configure file and directory ownership using chown, understand user and group permissions, and implement secure ownership patterns for web servers and applications.

25 min 6 distros 1,398 views
hosting Beginner

Install and configure Caddy 2 web server with automatic HTTPS and PHP-FPM

Set up Caddy 2 web server with automatic HTTPS certificates from Let's Encrypt and PHP-FPM integration for dynamic content. Includes virtual hosts, security headers, and systemd service configuration.

25 min 6 distros 1,200 views
linux Beginner

Fix SSH sign_and_send_pubkey: signing failed: agent refused operation

Resolve SSH authentication errors when the SSH agent refuses to sign public keys. This tutorial covers checking agent status, fixing key permissions, restarting the agent, and troubleshooting SSH client configuration.

20 min 6 distros 3,227 views

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