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

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

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

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Recently published

Set up automated MariaDB Galera cluster backups with compression

databases
1 tydzień temu

Configure MariaDB ColumnStore for high-performance analytics workloads

databases
1 tydzień temu

Implement Kibana 8 custom threat hunting dashboards for security incident response

monitoring
1 tydzień temu

Configure Logstash 8 security pipelines with threat intelligence enrichment

monitoring
3 tygodnie temu

Configure Ansible Vault integration with HashiCorp Vault for secrets management

devops
3 tygodnie temu
"ssh-agent" × Clear all
security Intermediate

Configure SSH key authentication and security hardening

Replace password authentication with SSH keys and implement comprehensive security hardening including fail2ban, audit logging, and access controls to protect your Linux servers from unauthorized access and brute force attacks.

25 min 4 distros 1,040 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
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 3,217 views
security Intermediate

Configure SSH port forwarding and tunneling for secure connections

Learn to configure SSH port forwarding, remote tunnels, and SOCKS proxy for secure network connections. Set up local, remote, and dynamic port forwarding with automated monitoring and security hardening.

35 min 4 distros 1,142 views

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