Como centralizar logs com o Journald no Debian 10
O autor selecionou o Free and Open Source Fund para receber uma doação como parte do programa Write for DOnations. Os logs de sistema são um componente extremamente importante no gerenciamento de…
Debian 10 — proftpd-dfsg — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 3 July 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2019-12815 CVE-2019-18217 CVE-2020-9273 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
How To Acquire a Let’s Encrypt Certificate Using DNS Validation with certbot-dns-the cloud provider on Ubuntu 20.04
DNS validation allows for certificate issuance requests to be verified using DNS records, rather than by serving content over HTTP. In this tutorial, you will use the certbot-dns-the cloud provider hook for Certbot to issue a Let’s Encrypt certificate using DNS validation via the cloud provider API.
Debian 9 – kernel panic after update due to incompatible third-party module
🔴 Critical ⏱ 5–30 min Last verified: 2 July 2020 Affected versions: Debian 9 📖 ~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 & […]
Kernel Updated but System Booted into Older Kernel
🟡 Medium ⏱ 5–30 min Last verified: 2 July 2020 📖 ~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 […]
openSUSE Tumbleweed — libtheora1 — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2018:0015-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-14633 Upstream summary: In Xiph.Org libvorbis 1.3.5, an out-of-bounds array read vulnerability exists in the function mapping0_forward() in mapping0.c, which may lead to DoS when […]
How to Create a Virtual Machine in Hyper-V on Windows Server 2012 R2
How to Create a Virtual Machine in Hyper-V on Windows Server 2012 R2 Creating virtual machines is the primary day-to-day task of a Hyper-V administrator. Windows Server 2012 R2 Hyper-V introduces Generation 2 VMs — which use UEFI firmware, support Secure Boot, and eliminate legacy hardware emulation — alongside the traditional Generation 1 VMs which […]
Managing the Friction: How to Restructure IT Operations During Large-Scale Agentic AI Deployments
A practical guide to AI workforce displacement mitigation, IT operating-model redesign, role restructuring, upskilling, governance, and agentic AI deployment readiness.
Oracle Linux 8 — php:7.3 — vulnerability — patch and remediation guide
🔴 Critical ⏱ 15–90 min Last verified: 2 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2019-3736 Related CVEs: CVE-2019-11043 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
How To Time Command Execution with the time Command
Learn how to track how long a command takes to execute from the command-line using the time command.
