system administrator



Zabbix vs Prometheus: Which Monitoring System to Choose for Infrastructure in 2026?

  • August 26, 2026, 12:04:30

Greetings, friends!When building and scaling corporate IT infrastructure, selecting a monitoring system becomes a fundamental architectural decision. Making a mistake at this stage can result in lost ...

Why is the disk on the server overflowing and how to find the "hidden" files?

  • August 18, 2026, 01:45:57

Greetings, friends!Sudden disk space depletion on a Linux server is one of the most common causes of emergency failures. This issue can stop databases, break web server operations, and freeze system p...

How to protect the server from hacking: Setting up 2FA via Google Authenticator PAM

  • August 18, 2026, 11:51:31

Greetings, friends!In modern realities, classical password protection or SSH key authorization is no longer enough if an administrator's account becomes compromised. Implementing Two-Factor Authentica...

Kubernetes vs Docker Compose: What does small business pay for?

  • August 18, 2026, 10:16:58

Greetings, friends!For small companies developing digital products, the abbreviation Kubernetes (K8s) has long been synonymous with a modern, scalable backend. However, behind the flashy status of an ...

What should I do if the server's IP is blacklisted (Spamhaus, etc.)?

  • August 14, 2026, 12:11:06

Suppose you have set up a mail server, prepared an important B2B email campaign with commercial proposals for client leads, or launched automated order notifications for an online store. But suddenly,...