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.

networking Intermediate

Configure WireGuard VPN with DNS filtering and ad blocking using Pi-hole and Unbound

Set up a secure WireGuard VPN server with integrated Pi-hole DNS filtering and Unbound recursive resolver for ad blocking and privacy protection. This configuration provides secure remote access while filtering malicious domains and advertisements.

45 min 4 distros 1,192 views
networking Intermediate

Implement SNMP device auto-discovery with network scanning and automated inventory management

Set up automated SNMP device discovery using nmap network scanning and Python scripts for dynamic inventory management. Integrate with Zabbix and Grafana for comprehensive network monitoring and visualization.

45 min 4 distros 1,066 views
devops Advanced

Set up Apache Airflow high availability with CeleryExecutor and Redis clustering

Deploy Apache Airflow in high availability mode using CeleryExecutor with Redis clustering for task distribution, PostgreSQL connection pooling, and load-balanced webservers for production-grade workflow orchestration.

45 min 4 distros 1,100 views
monitoring Intermediate

Integrate Nagios Core 4.5 with Grafana dashboards for advanced monitoring visualization

Connect Nagios Core 4.5 with Grafana through NDOUtils and MySQL to create powerful monitoring dashboards. This integration provides advanced visualization capabilities, real-time alerting, and comprehensive monitoring insights for your infrastructure.

45 min 4 distros 824 views
networking Intermediate

Implement HAProxy SSL termination with Let's Encrypt certificates for secure load balancing

Configure HAProxy to handle SSL termination with automated Let's Encrypt certificates, enabling secure HTTPS load balancing across multiple backend servers. This setup reduces CPU load on backend servers while providing centralized SSL certificate management.

45 min 4 distros 1,075 views
devops Advanced

Set up Istio multi-cluster service mesh with cross-cluster communication

Deploy and configure Istio across multiple Kubernetes clusters with secure cross-cluster communication, shared service discovery, and unified traffic management for distributed microservices architecture.

45 min 4 distros 777 views
monitoring Advanced

Set up Thanos Receiver for remote write scalability with Prometheus integration

Configure Thanos Receiver to handle high-volume remote write traffic from multiple Prometheus instances. This tutorial covers installation, multi-tenancy setup, and performance optimization for large-scale metrics ingestion.

45 min 4 distros 989 views
monitoring Intermediate

Configure Gunicorn performance monitoring with Prometheus metrics and Grafana dashboards

Set up comprehensive performance monitoring for Gunicorn WSGI servers using Prometheus metrics collection and Grafana visualization. Monitor request rates, response times, worker processes, memory usage, and implement automated alerting for production Python applications.

45 min 4 distros 735 views
databases Advanced

Configure PostgreSQL 17 streaming replication for high availability with automatic failover

Set up PostgreSQL 17 streaming replication between primary and replica servers with pg_auto_failover for automated high availability. This tutorial covers complete configuration from authentication to monitoring and maintenance procedures.

45 min 4 distros 929 views
monitoring Intermediate

Monitor Consul with Prometheus and Grafana for service discovery observability

Set up comprehensive monitoring for HashiCorp Consul using Prometheus metrics collection and Grafana dashboards. Configure telemetry export, alerting rules, and visualization for service discovery health and performance.

35 min 4 distros 948 views
networking Advanced

Configure advanced iptables QoS with DSCP marking and traffic classification

Set up Quality of Service (QoS) on Linux servers using iptables DSCP marking, HTB queuing, and traffic classification. This tutorial shows you how to prioritize network traffic, implement bandwidth limits, and ensure critical applications get the network resources they need for optimal performance.

35 min 4 distros 872 views
databases Intermediate

Configure MinIO backup and disaster recovery with automated snapshots and replication

Configure comprehensive backup and disaster recovery for MinIO object storage with automated snapshots, cross-site replication, and encryption. Implement production-ready backup strategies to protect critical data and ensure business continuity.

45 min 4 distros 980 views

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