Cómo instalar MySQL en Ubuntu 18.04
Hazel Virdó escribió una versión anterior de este tutorial. MySQL es un sistema de gestión de bases de datos de código abierto, que generalmente está instalado como parte de la popular…
How to Set Up DHCP Audit Logging on Windows Server 2019
Introduction to DHCP Audit Logging on Windows Server 2019 DHCP Audit Logging records every IP address assignment, renewal, release, and denial made by the DHCP server. This log is invaluable for network troubleshooting (tracking which machine had a given IP at a specific time), security investigation (identifying rogue devices or tracking when an infected machine […]
Break/Fix vs. Managed IT: Why Proactive Services Outperform Reactive Support
A practical comparison of break/fix versus managed IT and why proactive services consistently outperform reactive tech support for growing businesses.
Ubuntu 20.04 — storebackup — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4508-1 Related CVEs: CVE-2020-7040 Upstream summary: It was discovered that StoreBackup did not properly manage lock files. A local attacker could use this issue to cause a denial of service […]
Debian 10 Cron Job Not Running at Scheduled Time
🟡 Medium ⏱ 5–30 min Last verified: 20 May 2026 Affected versions: Debian 10 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
No space left on device in /var
🟡 Medium ⏱ 5–30 min Last verified: 19 May 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
Windows Server 2016 — CBS Manifest Corruption Causes 0x80073701 Update Failure — Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 18 May 2026 Affected versions: Windows Server 2016 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
How to Set Up a PKI Infrastructure with AD CS on Windows Server 2016
Introduction Active Directory Certificate Services (AD CS) on Windows Server 2016 provides a complete Public Key Infrastructure (PKI) platform for issuing and managing digital certificates used by SSL/TLS, smart card authentication, email signing, IPsec, code signing, and more. A two-tier PKI hierarchy — an offline Root CA and an online Issuing CA — is the […]
How to Set Up Nginx as a Reverse Proxy on Debian 10
Introduction Deploying set up nginx as a reverse proxy on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]
Testing React / Redux Apps with Jest & Enzyme – Part 4: Testing Redux Reducers
In this 4th part of a series on testing React/Redux apps we’ll take a look at testing your app’s reducers.
