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
10,908

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

linux
7,305

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

monitoring
6,788

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

hosting
5,935

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

databases
5,403

Recently published

Fix PostgreSQL FATAL sorry, too many clients already

linux
6 days ago

Configure Istio multi-cluster disaster recovery and automated failover

devops
1 week ago

Set up automated MariaDB Galera cluster backups with compression

databases
3 weeks ago

Configure MariaDB ColumnStore for high-performance analytics workloads

databases
4 weeks ago

Implement Kibana 8 custom threat hunting dashboards for security incident response

monitoring
1 month ago
"centralized-logging" × Clear all
monitoring Advanced

Configure Logstash 8 security pipelines with threat intelligence enrichment

Build a production Logstash 8 pipeline that ingests firewall, IDS and syslog data, enriches events with MISP, AlienVault OTX and AbuseIPDB threat intel, and ships hardened IOC-enriched events to Elasticsearch.

75 min 4 distros 418 views
monitoring Intermediate

Install and configure Filebeat 8.15 for efficient log shipping to ELK stack

Set up Filebeat 8.15 to collect and ship logs from multiple sources to Elasticsearch. Configure SSL/TLS security, performance optimization, and monitoring for production-grade log aggregation.

45 min 4 distros 1,163 views
devops Intermediate

Configure centralized cron management with Ansible automation and systemd timers

Set up automated cron job deployment and monitoring across multiple servers using Ansible playbooks with systemd timers for reliable task scheduling and centralized logging.

45 min 4 distros 1,002 views
monitoring Intermediate

Set up Nagios Core 4.5 distributed monitoring with NRPE for remote host checks

Configure Nagios Core server with NRPE agents for distributed monitoring across multiple servers. Set up remote host checks, service monitoring, and centralized alerting for comprehensive infrastructure oversight.

45 min 4 distros 1,154 views
linux Intermediate

Optimize systemd journal logging performance and storage

Learn how to optimize systemd journald for production environments by configuring storage limits, compression, performance settings, and implementing log forwarding with monitoring.

25 min 4 distros 1,646 views
linux Intermediate

Set up RAID arrays with mdadm for performance and redundancy

Configure Linux software RAID arrays with mdadm to improve disk performance and protect against drive failures. Learn to create RAID 0, 1, 5, 6, and 10 configurations with automatic monitoring and management.

45 min 4 distros 1,546 views
security Advanced

Configure SSH certificate authentication with CA signing for secure server access

Set up SSH certificate-based authentication using a Certificate Authority to eliminate individual key management. Create signed user certificates that provide secure, scalable access control for multiple servers and users.

45 min 4 distros 1,082 views
security Intermediate

Configure SSH two-factor authentication with Google Authenticator TOTP

Add an extra layer of security to SSH logins by requiring both a password and a time-based one-time password (TOTP) generated by Google Authenticator or compatible apps.

25 min 4 distros 1,584 views
security Advanced

Configure intrusion detection with OSSEC and fail2ban integration

Set up comprehensive intrusion detection by integrating OSSEC HIDS with fail2ban for automated threat response. This advanced configuration provides real-time monitoring, log analysis, and automated IP blocking for enhanced server security.

45 min 4 distros 1,032 views
security Intermediate

Set up Fail2ban with Cloudflare API integration for automatic IP blocking and enhanced security

Configure Fail2ban to automatically add malicious IPs to Cloudflare's firewall rules for enhanced protection. This tutorial covers installation, custom filters, API integration, and monitoring for comprehensive security automation across your infrastructure.

45 min 4 distros 2,877 views
networking Intermediate

Configure keepalived with HAProxy backend health monitoring for high availability load balancing

Set up keepalived with HAProxy to create a high availability load balancer cluster with automatic failover, backend health monitoring, and VRRP protocol for seamless traffic distribution across multiple servers.

45 min 4 distros 1,471 views
linux Intermediate

Setup log aggregation with rsyslog and logrotate for centralized system monitoring

Configure rsyslog for centralized log collection across servers, implement advanced logrotate policies for automated retention, and set up remote log shipping with filtering for comprehensive system monitoring and audit compliance.

45 min 4 distros 1,422 views

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