// DevOps
Practical materials about infrastructure, networking, migrations, releases, and real problems solved in production.
73 DevOps materials published
Introduction Up to this point, we’ve used simple utilities for specific tasks: ping checked connectivity, traceroute showed the path, ipconfig and arp helped with the local network, telnet and nc tested ports. That’s …
Read moreIntroduction A server’s IP address is like the postal address of an apartment building. But to reach the right apartment, you need the door number. In networking, these doors are ports. HTTP runs on port 80. HTTPS — on …
Read moreIntroduction You’ve gone through all the checks from the previous articles: The computer has the correct IP address (ipconfig). The router responds (ping 192.168.1.1). Ping to a public address (ping 8.8.8.8) works. Looks …
Read moreIntroduction In the previous article, we learned how to reach out to remote servers using ping and trace the path of packets with traceroute. But what if ping google.com doesn’t work, and traceroute stops right at the …
Read moreIn this guide, we’ll go through setting up an OpenVPN server on Ubuntu and connecting a Keenetic router to it. This setup is useful if you need to provide access to your home network or forward services (e.g., PBX or web …
Read moreIn the previous article, we deployed a basic Jitsi Meet server using Docker. Now let’s look at how to secure your server, enable authentication, and optimize performance for stable video calls. Authentication: …
Read moreWant to set up your own fully private video conferencing server? Jitsi Meet is a great choice, and installing it with Docker is the fastest and most reliable way. This article provides a step-by-step guide to get your …
Read moreHello! If you’re even a little interested in the web, you’ve probably heard of curl. It’s a powerful and versatile command-line tool for interacting with web servers. It is used to send and receive data over various …
Read moreIntroduction Logrotate is a powerful tool for log management in Linux, but its interaction with Docker has its own specifics. This guide explains how to properly use logrotate with Docker containers and when it’s better …
Read moreSwap is virtual memory on disk that saves your VPS from crashing when RAM runs out. On low-cost servers, it’s an indispensable tool to avoid failures during short-term memory usage spikes. Setup is simple: create a file, …
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